JPWO2015037249A1 - Civil engineering improvement method and modified paper powder material - Google Patents

Abstract

The present invention proposes a simple civil engineering improvement method. By excavating the soft soil 12 of the civil engineering target part 8 and introducing the modified paper powder material, the moisture content of the soft soil is reduced, and the modified soils 3A and 3B having increased strength are obtained as excavation traces. By refilling, civil engineering work can be further improved at the construction site.

Description

  The present invention relates to a civil engineering improvement method and a modified paper powder material, and can be applied to processing soft soil having a high water content.

  Conventionally, in civil engineering work such as river revetment work, when excavated soil that has deteriorated at the embankment site is replaced with improved soil or high-quality soil, the construction process requires a large amount of materials and work, so the strength is As a technique for simplifying replacement of reinforced improved soil, a method of utilizing finely divided waste paper has been proposed (see Patent Documents 1, 2, and 3).

JP 2007-197902 A JP 2008-106088 A JP 2001-121193 A

  However, it is difficult to realize improved soil with strength performance that can be practically used for civil engineering work with the conventional method using finely divided waste paper. If a reinforcing soil for reinforcement having strength is obtained during a short enforcement period, it is considered to be highly effective.

  The present invention has been made in consideration of the above points, and proposes a civil engineering improvement method and a modified paper powder material capable of obtaining a modified soil with enhanced strength in a short period of time in civil engineering. Is.

  In order to solve this problem, in the present invention, the water content excavated and accumulated by the construction machine (9, 26, 42, 62, 74) at the civil engineering work site (8, 22A, 40, 50, 60, 70, 81). The soft soil having a high ratio (12, 29, 43, 55, 65, 73, 82) is mixed with a modified paper powder material having a predetermined volume ratio, and the water content ratio of the soft soil is thereby reduced. The reduced modified soil (15A, 15B, 16, 32, 33, 35, 42, 69, 73) is reformed, and the modified soil is reused at the civil engineering work site.

  According to the present invention, the soft soil having a high water content ratio excavated and accumulated by a construction machine at a civil engineering work site is charged with the modified paper powder material having a predetermined volume ratio, and the mixture is agitated. By improving the modified soil with a reduced water content and reusing the modified soil at the civil engineering work site, the efficiency of civil engineering work to treat soft soil with a high water content can be further improved. .

It is a flowchart which shows the basic civil engineering improvement procedure in one embodiment of this invention. It is a basic diagram which shows the case of river construction as civil engineering work of 1st Embodiment. It is a flowchart which shows the construction processing procedure in the river construction of FIG. It is a flowchart which shows the reconstruction process procedure of the revetment reinforcement object part in process sequence SP7 of FIG. It is a basic diagram which shows the case of road construction as 2nd Embodiment. It is a flowchart which shows the process sequence in road construction. It is a basic diagram which shows the case of construction machine scaffold construction as 3rd Embodiment. It is a flowchart which shows the process sequence in the construction machinery scaffold construction of FIG. It is a graph which shows a cone index required for driving | running | working of a construction machine. It is a graph which shows the relationship between a modified paper powder material and a cone index. It is a graph which shows the relationship between a corn index | exponent and an addition ratio. It is a basic diagram which shows the case of the debris removal construction as 4th Embodiment. It is a flowchart which shows the process sequence in the debris removal construction of FIG. It is a basic diagram which shows the case of a pile hole formation construction as 5th Embodiment. It is a flowchart which shows the process sequence in the pile hole formation construction of FIG. It is a basic diagram which shows the case of dredged material removal construction as 6th Embodiment. It is a flowchart which shows the process sequence in the dredged material removal construction of FIG. It is a basic diagram which shows the case of sewage treatment construction as 7th Embodiment. It is a flowchart which shows the process sequence in the sewage construction of FIG. It is a basic diagram which shows the case of a ready-mixed concrete process. It is a basic diagram which shows the process of the soft soil by a debris flow or a collapse.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

(1) Basic civil engineering improvement procedure FIG. 1 shows a basic civil engineering improvement procedure used in one embodiment of a civil engineering improvement method according to the present invention. For civil engineering work such as construction, a basic civil engineering improvement procedure RT1 is executed. In the basic civil engineering improvement procedure RT1, the civil engineer first performs a process of digging out soft soil having a large water content ratio from the civil engineering work target portion as a raw soil in the processing routine RT2.

  Subsequently, the civil engineer generates the modified soil having the strength suitable for the civil engineering work object by putting the modified paper powder material into the soft soil excavated in the next processing routine RT3 and stirring it.

  Subsequently, the civil engineer reuses the modified soil generated in the next processing routine RT4 to reconstruct the civil engineering target.

  Thus, the civil engineer ends the basic civil engineering improvement procedure RT1 in the next processing routine RT5.

  According to the configuration of FIG. 1, when the civil engineer inputs the paper dust material into the soft soil dug in the processing routine RT3, the modified paper powder material shortens the water component contained in the soft soil. Due to the action of absorbing water rapidly over time, the excavated soft soil is solidified, thereby generating modified soil in which the civil engineering strength of the original soil that was the target of civil engineering work is enhanced. .

  The civil engineer recycles the generated modified soil so that the soft soil excavated from the civil engineering target portion (processing routine RT2) is removed in the processing routine RT4 so that it is backfilled. Reinforced civil works can be reconstructed.

The basic civil engineering improvement procedure RT1 shown in FIG. 1, as described below for various civil engineering works, by devising the method of charging the modified paper powder material according to the state of the civil engineering target part, The civil engineer can perform civil engineering work suitable for the purpose in an extremely short construction period by appropriately modifying soft soil in which the strength of various civil engineering target parts is inferior.
(2) River construction FIG. 2 shows the first embodiment. As shown in FIG. 2 (A), the river whose strength is inferior in the river construction site 1 due to the influence of the river flow 2 to be constructed. On the outside of both quay walls 3A and 3B, there are allowance walls 7A and 7B that separate them from levee bodies 6A and 6B with sufficient strength on the outside, and the river part between the allowance walls 7A and 7B is the construction target part 8 As shown in FIG. 3, the processing procedure RTN1 in the river construction is executed.

  When entering the processing procedure RTN1 in the river construction site 1, the civil engineer first excavates the civil engineering target portion 8 by the excavator 9 which is a construction machine in step SP1.

  Thus, the soft soil 12 whose strength is inferior as the civil engineering target part 8 surrounded by the allowance walls 7A and 7B and the riverbed base 11 made of soil with high strength that has not deteriorated directly guides the flow of the river. It is excavated together with the revetment member, and the waste material excluding the soft soil 12 is conveyed to the waste material storage site by the dump truck 10.

  Here, since the raw soil made of the soft soil 12 is a soil containing a large amount of water components (this is called a soil having a high water content), mud soil from the loading platform is used even if it is intended to be loaded quantitatively on the dump truck 10 as a transport machine. Moreover, since muddy water is in a state of leaking, it cannot be loaded directly on the dump truck 10.

  Therefore, in the next processing step SP2, the civil engineer puts it in the modified soil generation site in which an enclosed wall is formed so as not to allow mud or mud to leak out from the excavated raw soil over time.

Subsequently, in the next processing step SP3, the civil engineer puts the modified paper powder material 1 [m ³ ] into the excavated raw soil 10 [m ³ ] and stirs it with, for example, a shovel car which is a heavy machinery machine. Produce textured soil.

  At this time, the modified paper powder material is solidified by absorbing water for a short period of time with respect to the water components contained in the excavated high water content raw soil, thereby strengthening the strength of the raw soil whose strength has deteriorated. A modified soil obtained by reforming can be generated.

In the case of this embodiment, the cone index qc of the raw soil is as soft as qc = 50 [kN / m ² ], whereas the modified paper powder material was charged and stirred into this raw soil. Thus, the cone index qc could be stabilized to about qc = 200 [kN / m ² ].

  Here, the cone index qc is an index representing the load bearing performance of the soil, and is used as an index for determining whether or not the strength of the soil of the civil engineering structure meets the purpose of use.

  As a result, even if a fixed amount of the modified soil was loaded on the dump truck, it was improved so that mud or mud could be transported without leaking from the loading platform. A part of the soil is transported to the modified soil treatment plant, and the processing procedure RTN1 in the river construction is completed in the next processing step SP5.

In the case of this embodiment, in addition to this, the civil engineer moves to step SP6 of the other part of the modified soil generated in the processing step SP3 that has been carried to the modified soil treatment plant and moves to the modified soil. After the modified modified soil is generated by adding and stirring the modified paper powder material 1 [m ³ ] to the other part, the civil engineering work target part 8 is used by using the modified modified soil in the next processing step SP7. Are reconstructed and the processing procedure RTN1 in the river construction is completed in the above-described processing step SP5.

In the case of this embodiment, the reused modified soil obtained in this processing step SP6 is further added to the modified paper powder material 1 [m ³ ] and agitated, so that the raw soil 10 [m ³ ] is eventually mixed. As a result, 2 [m ³ ] of the paper dust material was added and stirred, and as a result, the cone index qc of the reused modified soil can be modified to about qc = 400 [kN / m ² ].

Since the reused modified soil reinforced to a strength of the cone index qc = 400 [kN / m ² ] can be evaluated as being improved to a high quality soil with respect to the flow of river water, As shown in FIG. 2 (B), the construction worker refills the reused modified soil as backfill portions 15A and 15B inside the allowance walls 7A and 7B by the excavator 9 and fills the riverbed base 11 with the embankment portion. As a result, the civil engineering work target part 8 is newly reconstructed.

  In the case of this embodiment, as shown in FIG. 4, the restructuring process procedure SP7 for the revetment reinforcement target portion is first performed at the processing step SP7X1 by using the reused modified soil as shown in FIG. 2B. After the backfill portions 15A and 15B are backfilled inside 7A and 7B, the reinforcement revetment walls 17A and 17B are newly constructed in the next processing step SP7X2, and then the reinforcement revetment walls 17A and 17B in the processing step 7X3. The reused modified soil is refilled on the riverbed base 11 as the embankment portion 16.

  In practice, the backfill portions 15A and 15B and the embankment portion 16 need to be sufficiently tightened to prevent settlement after construction, and therefore, a rolling compaction process is performed by a compacting heavy machinery machine during the backfilling operation.

  This rolling compaction treatment is actually effective because the reused modified soil actually used as the backfill portions 15A and 15B and the embankment portion 16 has been modified to a qc strength of about qc = 400. .

  In addition to this, as shown in FIG. 2C, the civil engineer removes the allowance walls 7A and 7B in the next processing step SP7X4, and then uses the reclaimed modified soil to make the dike body of the river 1A. After the embankment embankment portion 19 is constructed, a road bed / road body 20 is constructed as a road on the embankment embankment portion 19.

  In this case, the cement is put into the tub of the reused modified soil used for composing the roadbed / roadway, and the roadbed soil and the roadbed soil are generated by stirring and roads on the embankment embankment portion 19. Form.

  Thus, in the processing step SP7X5, the reconstruction processing procedure SP7 of the civil engineering target portion 8 is finished and the process returns to the main routine of FIG.

  According to the configuration of FIGS. 2 to 4, by digging out the soft soil 12 whose strength has deteriorated due to the influence of the river flow 2 of the river 1 </ b> A and introducing the modified paper powder material at the river construction site 1 and stirring it, By obtaining modified soil with improved strength and refilling it into the civil engineering target part 8 of the river 1A, it is possible to efficiently carry out river construction by reusing construction generated soil generated in river construction. .

(3) Road Construction FIG. 5 shows the case of the second embodiment when applied to the road construction site 20.

  As shown in FIG. 5 (A), the road construction in this case is because the soil constituting the road shoulder 23 is softened on the road 22 constructed by excavating the sloped ground 21 on the mountain side. Civil engineering work is performed according to the processing procedure RTN2 in the road construction shown in FIG.

  When entering the processing procedure RTN2 in road construction, the civil engineer first secures the scaffold portion 22B of the excavator 26, which is a construction machine, by cutting the excavated portion 28 made of high-quality soil in the road in processing step SP21.

  Subsequently, the civil engineer excavates the raw soil made of the soft soil 24 constituting the road shoulder 23 as the excavated portion 29 by the construction machine 26 brought to the road in the next step SP22 to form a modified soil generation site having a surrounding wall. Put in.

Subsequently, in the next processing step SP23, the civil engineer inputs and agitates the modified paper powder material 1 [m ³ ] and the cement 200 [kg] to the excavated raw soil 10 [m ³ ]. To produce modified soil.

In the case of this embodiment, the soft soil 24 has a cone index qc representing the strength of soil having a high water content containing a large amount of water and is about qc = 200 [kN / m ² ]. By introducing the material and cement, the cone index qc representing the strength of the modified soil is solidified to have a strength of about qc = 1200 [kN / m ² ].

  In this way, the CBR value can be improved from 0.3 to 25.1, and the plasticity index can be improved by mixing with good quality soil, so it can be reused for road body embankment and roadbed embankment. It can be modified to such an extent that it can be done.

  Subsequently, in the next processing step SP24, the civil engineer installs an L-shaped road shoulder reinforcement wall material 31 at a position corresponding to the road shoulder 23 of the excavated road 22, as shown in FIG. The modified soil generated in the above-described processing step SP23 between the road 22 and the road shoulder reinforcing wall material 31 is backfilled so as to be sequentially stacked as a road body bank 32 and a road bed bank 33, and then rolled by a roller machine 34.

  In this way, the laminated portion of the road body embankment 32 and the road bed embankment 33 formed between the slope 22 and the road shoulder reinforcement wall material 31 on the trough side of the road 22 securing strength is reinforced by rolling. A road portion is formed.

  In the case of this embodiment, the road builder forms an interference prevention backfill portion 35 between the road shoulder reinforcing wall material 31 and the rice field 27 following the valley side in the processing step SP25 following the processing step SP24. In step SP27, the processing procedure RTN2 in the road construction is terminated.

The backfill portion 35 for preventing interference has a cone index qc of qc = 400 [kN / m ² ] by introducing the improved paper powder material 2 [m ³ ] into the raw soil 10 [m ³ ] made of the soft soil 24. ] By using the modified soil modified to a certain degree of strength, and thereby improving the strength only with the raw soil and the improved paper powder material without containing cement as the modified soil, the road embankment 32 In addition, it is possible to prevent the cement 27 from being affected by alkalinization from the road bed embankment 33 to the paddy field 27.

  In the case of this embodiment, an inclined surface reinforcing wall member 36 is formed on the excavation portion 28 (FIG. 5A) between the road 22 and the inclined ground 21 (FIG. 5B).

  According to the above configuration, as a reinforcing material for the soft road shoulder 23, simply by adding and stirring the improved paper powder material to the soft soil obtained by excavation, at the road construction site, Since the strength of the raw soil can be improved in a short time, road construction can be performed more efficiently.

(4) Construction machinery scaffold construction In FIG. 7, reference numeral 40 denotes a construction machinery scaffold construction site as a third embodiment, on the construction road 41 (FIG. 7 (A)) or 44 (FIG. 7 (B)). For example, an excavator car runs as the construction machine 42.

  In the case of FIG. 7A, the construction road 41 is composed of soft soil containing a large amount of water component, so that the soft soil 43 is not covered with the caterpillar 42 </ b> A of the construction machine 42 in the soft soil 43. Since no resistance is received from this, it becomes idle.

  On the construction road 41 composed of such soft soil 43, the construction machine 42 cannot advance or retreat, and the work posture in which the construction machine 42 can perform the original construction work cannot be maintained.

  For such a construction road 41, the civil engineer executes the processing procedure RTN3 in the construction machine scaffolding construction of FIG. 8, and first enters the construction road 41 made of the soft soil 43 in the processing step SP31. The soft soil 43 composing the road 41 is excavated, and the excavated soft soil is put into a modified soil generation site having a surrounding wall, and the construction machine travels with respect to the excavated soft soil 43 in the next step SP32. In addition, an appropriate amount of modified paper powder material that provides the necessary cone index is added, and the soft soil into which the improved paper powder material is added in the subsequent processing step SP33 is thoroughly agitated with a stirrer to make the soft soil hard and large solids. Solidify into a cluster of particles.

  The solidified soft soil is backfilled to the construction road 41 excavated in the next processing step SP34, thereby completing the processing procedure RTN3 in the construction machine scaffolding construction, and as shown in FIG. 7B. As a construction road 44 for the construction machine 42, the construction machine 42 is replaced with a scaffold soil 45 having such a strength that the construction machine 42 can maintain a driving posture in which construction work can be performed, and thus the caterpillar 42A is not recessed.

Here, a numerical value as shown in FIG. 9 is generally designated as the cone index necessary for various types of construction machines to travel. For example, the cone index qc = 200 [kN / m ² ] or more for the super wetland bull tozer, Bulltozer 300 [kN / m ² ] or more,... Dump truck cone index qc = 1200 or more.

Here, as shown in FIG. 10, the relationship of the cone index qc [kN / m ² ] to the volume ratio of the paper dust material to the raw soil (that is, raw soil) is 189 at 1: 0 and 206 at 1: 0.1. , ..., 20.6 experimental results were obtained at 1: 0.6.

Based on the results of this experiment, it is confirmed that if the relationship of the cone index qc [kN / m ² ] to the change in “the ratio of the paper dust material to the raw soil” is shown, it changes as shown in FIG. As a result, the ratio (volume ratio) of the paper powder material can be selected as necessary for the cone index to be obtained.

  Thus, an appropriate cone index can be defined for the construction machine 42 traveling on the construction road 44 according to the degree of softness of the soft soil 43 on the construction road 41.

  According to the above configuration, when a necessary construction machine is used using the construction road 41 with respect to the construction road 41 configured by the soft soil 43 having various softnesses (FIG. 7 (A )) For the construction suitable for the construction site, the scaffold soil 45 (FIG. 7B) having a cone index suitable for the construction machine to be used can be realized by selecting the mixing ratio of the paper powder materials. A road 44 can be realized.

(5) Landslide removal work In FIG. 12, reference numeral 50 denotes a land collapse removal work site as the fourth embodiment, and the land fall removal work site 50 is a slope 51 before the collapse as shown in FIG. In FIG. 12B, when the soil destabilized by the water soaked in the ground 52 suddenly collapses, as shown in FIG. It remains in a state where it has accumulated as a crush 55 on top of (having strength).

  As described above with reference to FIG. 7A, the collapsed soil 55 is in a state where the soft layer made of the soft soil 43 containing a large amount of water component is raised on the ground having a wide and normal strength. .

  Therefore, in order to remove the soft soil constituting the collapsed soil 55, it is necessary to form the construction road 44 (FIG. 7B) having such a strength that the construction machine 42 can travel on the collapsed soil 55. .

  In order to solve this problem, the civil engineer executes the processing procedure RTN4 in the debris removal work shown in FIG.

  When entering the processing procedure RTN4 in the debris removal work, the civil engineer should first form a construction road in the processing procedure SP41 at the terminal portion of the debris 55 where a scaffold for the construction machine can be secured. The end of the debris 55 is excavated and removed by the demolition construction machine and placed in a production site having an enclosed wall.

  Subsequently, the civil engineer moves to processing step SP42, and as described above with reference to FIGS. 9 to 11 for the collapse in the modified soil generation site, the state of the water component included in the collapse 55 (that is, the water content). The modified paper powder material is charged at an appropriate volume ratio according to the ratio.

  Subsequently, in the next processing step SP43, the civil engineer thoroughly agitates the debris into which the modified paper powder material has been charged with the stirring equipment to solidify the debris.

  Subsequently, the civil engineer refills the collapsed rock excavated from the solidified collapse in processing step SP44 as a construction road.

  Subsequently, the civil engineer moves to the next processing step SP45, moves the demolition removal construction machine to the backfilled portion of the construction road, excavates and removes the new debris, and reforms having the surrounding wall. Put in the soil generation site.

  Thus, after the civil engineer enters the operation of excavating a new collapse in the state where the construction machine 42 is put on the construction road 44 with the cone index formed in the collapse, the above-described operation is performed. Return to the processing step SP42.

  In this processing step SP42, the civil engineer inputs the modified paper powder material for the newly excavated and removed debris, and in the next step SP43, thoroughly agitates with the agitation equipment to solidify the debris. In step SP44, the solidified debris is refilled in the excavation site as a construction road.

  In the same manner, the civil engineer repeatedly executes the loop of steps SP44-SP42-SP43-SP44-SP46 to form a construction road 44 (FIG. 7B) step by step in the collapsed soil, and By performing a process such as moving the construction machine 42 on the construction road 44 that has been formed, the landslide that has collapsed from the slope is moved one step at a time while the construction machine 42 is moved one step at a time. It gradually solidifies with quality paper powder material.

  According to the above configuration, the high moisture content of the debris is solidified step by step while creating a scaffold for the debris that has collapsed from the inclined surface due to the landslide and swelled to the flat portion 54. Thus, it is possible to realize a civil engineering work that can quickly and efficiently handle a landslide that is a natural disaster.

(6) Pile hole forming construction FIG. 14 shows a case of a pile hole forming construction site 60 as the fifth embodiment.

  In the pile hole formation construction site 60, the civil engineer enters the pile hole formation processing procedure RTN5 shown in FIG. 15 and executes the first step SP51, whereby the ground auger of the construction machine 62 for pile hole formation is applied to the ground 61. A pile hole 64 to be struck by the pile 63 is excavated, and a pile residual soil 65 made of soft soil having a high water content from the pile hole 64 is formed on a modified soil generation site 67 having an enclosed wall 66 provided on the ground 61. Put in.

  Subsequently, in the next processing step SP52, the civil engineer modifies the volume ratio corresponding to the moisture content with respect to the pile residual soil 65 held on the modified soil generation site 67 as shown in FIG. In the next step SP53, a modified soil 69 which is modified so as to increase the cone index qc of the pile residual soil 65 by stirring with a stirring machine 68 such as a backhoe as a construction machine in the next step SP53. obtain.

  This modified soil 69 can be solidified and reformed to such an extent that it can be piled up on the ground 61 by rapidly reducing the moisture contained in the pile residual soil 65.

  Here, in the next processing step SP54, the civil engineer performs a process of transporting a part of the modified soil 65 to a waste disposal site by a transporting machine such as a dump truck, and then performs the next step. In SP55, the processing of the pile hole forming processing procedure RTN5 is terminated.

  At the same time, the civil engineer adds an appropriate amount of improved paper powder material and stirs the remaining portion of the modified soil 69 obtained by modifying the pile residual soil 65 in the processing step SP53 described above in the processing step SP56. Further, the backfill soil having a larger cone index is obtained, and the pile hole 64 is backfilled with the backfill soil in the next processing step SP57.

  Thus, the civil engineer ends the processing of the pile hole formation processing procedure RTN5 in processing step SP58.

  According to the above configuration, the volume ratio corresponding to the moisture content of the pile residual soil 65 with respect to the pile residual soil 65 made of soft soil that has flowed out by excavating the pile hole 64 in the ground 61 by the pile hole forming construction machine 62. By adding the amount of the modified paper powder material in an amount, the solidified modified soil can be obtained, so that the pile residual soil 65 can be disposed of in the disposal site by the transporting machine. Further, by introducing an appropriate amount of modified paper powder material, it is possible to obtain a backfilling soil having a cone index qc strength that can refill the pile hole 64, and thereby, a pile hole forming work The pile residue soil 65 can be efficiently processed at the site 60.

  By the way, in conventional pile hole formation work, cement is used as a method for solidifying pile soil with high water content, but this method requires a curing period of 1 to 2 days, so pile hole formation work 60 It is easy to secure the space to hold the pile remaining soil 65 at the construction site and the construction period.

  On the other hand, when the above-mentioned modified paper powder material is used, the moisture reduction effect by the modified paper powder material can occur in a short period of time (in front of the civil engineer).

  For example, since the solidification effect that can be transported by the transporting machine in a time of about 30 minutes can be realized with respect to the pile residual soil 65 of one pile hole 64, the work period can be shortened easily.

(7) Dredging Removal Work FIG. 16 shows the case of the dredging removal work site 70 as the sixth embodiment, and the civil engineer executes dredging removal processing procedure RTN6 shown in FIG. Perform removal.

  In the dredging removal work, the civil engineer executes the dredging removal processing procedure RTN6 shown in FIG. 17 in the dredging work target environment in which the bottom of the water is removed by removing the soil and the like in a water channel utilization environment such as a harbor, river, or canal. .

  When entering the dredged soil removal processing procedure RTN6 in FIG. 17, the civil engineer first includes water from the bottom 72 of the river 71 from which the water to be dredged is drained as shown in FIG. 16A in the processing procedure SP61. The earth and sand 73 is accumulated using a dredge machine 74 made of, for example, an excavator.

  Subsequently, in the next processing step SP62, the civil engineer puts the sand and sand 73 in the surrounding wall 75 provided so as to surround the accumulated sand and sand 73 as shown in FIG. The earth and sand 73 is modified and solidified by mixing and stirring the powder material.

  The earth and sand 73 solidified here can be solidified to such an extent that it can be quantitatively loaded on the loading platform of the transporting machine 76 made of, for example, a dump truck.

  Therefore, the construction contractor loads and transports the solidified sediment 73 in the next processing step SP63 on the transporting machine 76 as shown in FIG. 16 (B), and in FIG. 16 (C As shown in FIG. 5, the soil is stored as ordinary residual soil 73 in the dredged soil storage place 77.

  Thus, the civil engineer ends the dredging removal processing procedure RTN processing at processing step SP65.

  In the above configuration, dredged soil that accumulates further along the riverbed in the channel operating environment generally has a moisture content of 100 [%] to 500 [%], and there is a problem that treatment at the construction site is not easy.

The accumulated density is high in fluidity because the cone index qc is as small as 50 [kN / m ² ], and flows out from the loading platform of the dump truck, which is a transporting machine, when the material is unloaded from the dredged soil removal construction site 70. As a result, they could not be piled on a normal transport machine.

In this regard, according to the dredged soil removal construction processing procedure described above with reference to FIGS. 16 and 17, the corn index qc is set to qc = 200 [kN / m ² ] can be reformed and solidified, so that the clay from the clay removal work site 70 can be more easily processed.

(8) Sewage Treatment Construction FIG. 18 shows a case where a treatment is performed to remove only the crushed stone material by applying washing water when crushing rocks at the quarry construction site 80 as a seventh embodiment.

  The washing water after being used for the washing is separated from the crushed stone material product as sewage is obtained by washing away the crushed rock particles or fine crushed stones with washing water.

  The sewage is dehydrated and pressed in the dehydrated cake generating device 81 of FIG. 18, and then dehydrated as a dehydrated cake 82 made of crushed pieces in various shapes, and is formed below the dehydrated cake generating device 81. It is dropped into the cake outlet 83.

  The civil engineer who processes the dehydrated cake modifies the dehydrated cake 82 into a material that can be reused according to the sewage treatment procedure RTN7 shown in FIG.

  When the civil engineer enters the sewage treatment procedure RTN7, first, in the treatment step SP71, the dewatered cake 82 obtained from the dewatered cake generator 81 in the quarry is accumulated by an accumulation machine such as a shovel car.

  In practice, the dewatered cake 82 is a high moisture content waste stone containing a large amount of water, and therefore, it is placed in a modified soil generation site formed by surrounding walls that do not allow water to flow.

  Subsequently, the civil engineer mixes the modified paper powder material with the dewatered cake 82 accumulated in the next processing procedure SP72 and stirs it with a stirring machine such as a shovel car so as to reduce the moisture contained in the dehydrated cake 82. To reform.

  The modified dehydrated cake thus becomes dry in step SP73 and becomes easy to be plasticized, and the civil engineer mixes the modified dehydrated cake 82 with the crushed stone already collected from the existing equipment in the next step SP74. Let it be reused as a new crushed stone material.

  Thus, the civil engineer ends the sewage treatment procedure RTN7 in the process step SP75.

  According to the above configuration, the dehydrated cake 82 can be reused by reducing the water component contained in the dehydrated cake generated by washing when the crushed stone product is obtained in the quarry. Quality.

  Incidentally, since the dehydrated cake 82 taken out from the dehydrated cake production device 81 was originally sewage, it had a clay-like form, so that conventionally it had to be dried or crushed by a machine for reuse. However, because the water content was high, it took time and place for drying, and it was difficult to crush because it adhered to the machine. By easily improving the water content contained in the paper powder material, it can be modified into a material that can be easily reused.

(9) Accumulation of modified paper powder material The modified paper powder material is accumulated by the following method.

(9-1) Cutting of printed matter When a printed matter or product base paper of the printed matter is cut according to size, the section of the cutting blade used for cutting is based on the printed matter to be cut or the paper material of the product atom. Powdered chips are scattered.

  The scattered powdered chips are accumulated as a paper powder material through a filter.

  The paper dust material generated in this case is rough and contains chips.

(9-2) Folding operation at the time of bookbinding Before the bookbinding of the printed matter or the bookbinding paper, the machine performs the operation of making a crease, but the paper fibers are scattered in powder form by rubbing the paper at the time of the operation The scattered paper powder is accumulated as a paper powder material by a filter.

  The paper dust scattered by the crease operation at the time of bookbinding is fine, and scraps are also mixed.

(9-3) Mixing work at the time of bookbinding In the process of bookbinding work, when gluing or binding, the mixing work is done such that the back of the book is fluffed. Accumulate as a paper powder material.

  The paper dust that scatters during the blending operation is coarse, and paper waste is also mixed during grit insertion.

(9-4) Book processing work When commercializing a book, work is performed to polish three surfaces other than the back of the book, and the powder is scattered at that time. Accumulate as.

  At this time, the scattered paper powder has very fine eyes, and only paper powder is generated.

(9-5) Processing of paperware products In the manufacture of paperware products such as paper containers and paper boxes, processing work is performed to polish the cross-section of the paper material in order to make the cross-section of the paper material uniform. The paper dust that scatters is collected as a paper powder material through a filter.

  In this case as well, the paper dust generated is very fine and only the paper dust is scattered.

(10) Generation location of paper dust material The generation location of the paper dust material in which the improved paper powder material exemplified above is collected includes a printing factory, a bookbinding factory, a paper container factory, a return work, a processing factory, a used paper processing work, By collecting paper dust that scatters at most places where paper is handled, such as paper processing factories, paper dust materials that can be used for the above-described remodeling soil generation processing can be obtained.

(11) Comparative Example In the river construction described above with reference to FIGS. 2 to 4, the revetment work can be completed at the site of the river construction by introducing the modified paper powder material into the construction generated soil having deteriorated strength. However, in the conventional case in which the modified paper powder material is not used, the soft soil 12 excavated and removed from the civil engineering target portion 8 is often transported to a mountain where there is a strong soil to be replaced with the soil. However, since only the method of carrying back the soil with high mountain strength to the civil engineering work target part 8 instead of the soft soil and backfilling can be adopted, securing the soil for backfilling or the civil engineering concerned In order to dispose of soil containing mud obtained by excavation from the construction target portion 8, a large amount of materials and work processes have been required.

  The revetment processing using the modified paper powder material described above with reference to FIGS. 2 to 4 can be performed at the river construction site 1 to secure the large amount of revetment material and work procedure, thereby solving the conventional problems I can do it now.

(12) Other Embodiments (12-1) In the above-described embodiment, the number of times and the amount of the reformed paper powder material are not limited to this, and depend on the water content ratio and amount of the raw material to be reformed. And change to an appropriate amount.

(12-2) In the above-described embodiment, when only the modified paper powder material is added to the raw soil, an appropriate amount of cement may be added thereto.

(13) Utilization of ready-mixed concrete FIG. 20 shows the raw concrete used at the construction site, from the waste to the backfill material in the construction site described above with reference to FIGS. 2, 5, 7 and 12, An embodiment in which raw concrete waste can be utilized by obtaining a solidified construction material that can be used as a roadbed material will be described.

  The ready-mixed concrete manufacturing company carries out the work of loading the manufactured ready-mixed concrete on a concrete mixer truck and supplying it to the construction site, but if the ready-mixed concrete carried to the construction site remains unusable, Before solidifying the ready-mixed concrete remaining in the mixer truck, bring it back to the disposal ready-mixed concrete processing site 89 shown in FIG. 20A so that the ready-mixed concrete in the mixer truck does not harden together with a large amount of water in the storage pool. And is disposed of as an industrial waste liquid.

  That is, as shown in FIG. 20 (A), the ready-mixed concrete 91 in the concrete mixer truck 90 is dropped into the storage pool 92, and is disposed in the storage pool 92 as shown in FIG. 20 (B). A waste liquid 93 obtained by mixing the ready-mixed concrete 91 with the reaction preventing water is stored.

  On the other hand, when all of the ready-mixed concrete carried to the construction site is used and returned without leaving the ready-mixed concrete mixer truck 90, the ready-mixed concrete mixer truck 90 cleans the tank with water, and the washing water. Is stored in the storage pool 92 as ready-mixed concrete 91 for disposal.

  Thus, the waste liquid 93 not solidified is stored in the storage pool 92. When the waste liquid 93 reaches a predetermined amount, the modified paper powder material 95 is stored using the paper powder input vehicle 94. After charging the waste liquid 93 stored in the pool 92, an operation is performed in which the waste liquid 93 stored by the agitating machine 96 and the input modified paper powder material 95 are agitated.

The reformed paper powder material 95 to be added here is added in a volume ratio of 5 to 30% with respect to the waste liquid 93 and is stirred by the stirring machine 96 for about 3 minutes per 1 [m ³ ].

  At this time, the water in the waste liquid 93 is absorbed into the modified paper powder material 95, so that it gradually loses its fluidity and can finally be put on the palm as shown in FIG. It is modified to a granular material 98 consisting of a collection of large solid particles that are hard to the extent.

  Since the grain material 98 is basically composed of a ready-mixed concrete component, it does not require a curing period and increases in strength, so that it can be used as a backfill material in various construction sites including the construction site described above. Can be used as roadbed material.

  According to the above configuration, by modifying the ready-mixed concrete 91, which is a waste having a high moisture ratio, with the modified paper powder material 95, it is possible to realize high practicality that can be used as a construction material.

(14) Treatment of Soft Soil by Debris Flow and Landslide As described above with reference to FIG. 12, on the slope 51 before the collapse, the soil destabilized by the water soaked in the ground 52 suddenly collapses and becomes the debris 55 When the volume remains on the plane portion 54 (having normal strength) immediately below or when a debris flow is generated by a large amount of rainwater, the flowed down soil as shown in FIG. FIG. 21 (A) shows an embodiment in the case where soft soil that has been volumed in the debris flow / collapse site 99 is processed when it remains in the state.

  In this case, as shown in FIG. 21 (A), the soft soil 100 having a high water content is volumetric with fluidity on the ground 101 having normal strength, so the soft soil 100 is directly removed. It is in a difficult state.

  Incidentally, such soft soil 100 contains a large amount of water and has high fluidity. Therefore, it is difficult to directly put it in a soil bag or to load it on a dump truck. However, even if the soft soil 100 is directly removed by hand, there is a problem that workability is extremely deteriorated.

  As a means for solving this problem, in the embodiment shown in FIG. 21A, the operator 102 puts the modified paper powder material 103 in the transport bag 104, transports it, and spreads it on the soft soil 100. As shown in 21 (B), the soft earth 100 is manually stirred by a stirring / accumulating tool 105 such as a shovel.

  At this time, moisture contained in the soft soil 100 is absorbed by the paper powder of the modified paper powder material 103, and the soft soil 100 gradually loses fluidity and is reformed into a plastic state.

  The state of the soft soil 100 is modified so that the soft soil 100 loses its fluidity and becomes plastic while the worker 102 manually stirs and stacks the ground 101 with the stirring / stacking tool 105. By being modified to the soil 106, the soft and solid shape is maintained according to the operation of the stirring / accumulating tool 105, so that the modified soil 106 can be piled on the ground 101.

  The soft soil 100 in this state has changed to a modified soil 106 that loses its fluidity and can be softly deformed. As shown in FIG. By loading the accumulated modified soil 106 into the loading platform of the dump truck 107 as a large amount of unloading soil 106A, it can be unloaded from the debris flow / demolition site 99 using mechanical force, and divided into the unloading soil 106B in a soil bag 108. It can be stored and carried out manually.

  According to the embodiment of FIG. 21, in the debris flow / collapse site 99, the soft soil 100 volume on the ground 101 is softly spread by manually spreading the modified paper powder material 103 and manually stirring and accumulating. By being able to be reformed to the solid modified soil 106, it is possible to perform the removal work of the soft soil 100 by the manual work of the worker 102 under the conditions suitable for the situation of the debris flow / collapse site 99. it can.

  Accordingly, the modified paper powder material 103 sprayed on the soft soil 100 is substantially composed of cellulose, so that it does not have self-hardening properties that are hardened by itself, so that it is handled when it is transported as the unloading soil 106A and 106B. Is easy.

  Moreover, since the pH of the modified soil 106 is in the vicinity of 7, the soft soil 100 can be safely treated without giving an environmental load to animals, plants, aquatic organisms, and other ecological forms.

  The present invention can be used at a construction site for high moisture content raw soil.

  1 ... River construction site, 1A ... River, 2 ... River flow, 3A, 3B ... Both quay parts, 6A, 6B ... Embankment body, 7A, 7B ... Allowance wall, 11 ... River bottom base, 15A, 15B …… Refilling portion, 16 …… Filling portion, 19 …… Building embankment filling portion, 20 …… Road construction site, 21 …… Sloped ground, 22 …… Road, 22A …… Construction target portion, 22B …… Scaffolding section, 23 ... road shoulder, 24 ... soft soil, 25 ... reinforced wall material, 26 ... construction machine, 27 ... paddy field, 28, 29 ... excavation part, 32 ... road body embankment, 33 ... Roadbed embankment, 34 ... Roller machine, 35 ... Backfill part for interference prevention, 40 ... Construction machinery scaffolding construction site, 41, 44 ... Construction road, 42 ... Construction machinery, 43 ... Soft soil, 50 …… Demolition site, 51 …… Slope, 52 …… Underground, 53 …… Disrupted slope, 54 …… Surface part, 55 ... Debris, 60 ... Pile hole formation work, 61 ... Ground, 62 ... Pile hole formation construction machine, 63 ... Earth auger, 64 ... Pile hole, 65 ... Pile residual soil, 66 …… Siege wall, 67 …… Reformed soil generation site, 69 …… Reformed soil, 70 …… Soil removal work, 71 …… River, 72 …… River bottom, 73 …… Sediment, 74… 75 ...... Enclosure wall, 76 ... Transport machine, 77 ... Dust storage place, 80 ... Crush quarry construction, 81 ... Dehydrated cake generator, 82 ... Dehydrated cake, 89 ... Processing of ready-mixed concrete On site, 90 ... Ready-mixed concrete mixer, 91 ... Ready-mixed concrete for disposal, 92 ... Storage pool, 93 ... Waste liquid, 94 ... Vehicle for loading paper dust, 95 ... Material for modified paper powder, 96 ... Agitation machine, 97 ... solid particles, 98 ... granular material, 99 ... debris flow , 100 ... soft soil, 101 ... ground, 102 ... worker, 103 ... reformed paper powder material, 104 ... transport bag, 105 ... stirring and accumulating tool, 106 ... modified soil, 106A ... ... Large-scale unloading soil, 106B ... Subdivided unloading soil, 107 ... Dump truck, 108 ... Soil bag

[0002]
, 40, 50, 60, 70, 81), soft soil (12, 29, 43, 55, 65, 73, excavated and accumulated by construction machines (9, 26, 42, 62, 74)) 82), the water component contained in the soft soil is absorbed by the powdered cellulose by adding and stirring the modified paper powder material made of powdered cellulose at a predetermined volume ratio. To improve the modified soil (15A, 15B, 16, 32, 33, 35, 42, 69, 73) having a high cone index strength and reuse the modified soil at the civil engineering work site. .
In addition, in the ready-mixed concrete treatment site (89), the ready-mixed concrete (91) is mixed with the reaction-preventing water and stored in the storage pool (92) as the waste liquid (93), and the waste liquid in the storage pool (92) is stored. By making the modified paper powder material (95) made of powdered cellulose into (93) and stirring, the water component contained in the waste liquid (93) is absorbed by the powdered cellulose. A granular material (98) consisting of a collection of hard large solid particles (97) is produced.
Furthermore, in the debris flow / collapse generation site (99), the softened soil (100) that has been accumulated is treated as a processing object, and the modified paper powder material (103) made of powdered cellulose is sprayed and stirred, thereby softening The water component contained in the soil is absorbed into the powdery cellulose to modify the plasticized modified soil (106), and the modified soil (106) is used as unloading soil to generate debris flow and collapse (99 ).
Effects of the Invention [0007]
According to the present invention, at a civil engineering work site, a modified paper powder material made of powdered cellulose having a predetermined volume ratio is added to and mixed with soft soil having a high water content ratio excavated and accumulated by a construction machine. The water component contained in the soft soil is absorbed into the powdered cellulose to improve the modified soil having a high cone index strength, and the modified soil is reused at the civil engineering work site. In addition, the efficiency of civil works that treat soft soil with a high water content can be further improved.
In addition, at the disposal site of ready-mixed concrete, the modified paper powder material made of powdered cellulose is basically put into a ready-mixed concrete waste liquid, which is a processing target composed of concrete components, so that a large solid solid As a result of being able to be modified into a cluster of particles, it can be reused as backfill material or roadbed material at various construction sites.
Furthermore, at the site of debris flow and demolition, by introducing modified paper powder material made of powdered cellulose into soft soil, the soft soil to be treated can be softly deformed with loss of fluidity, and almost cellulose Since it does not become hard by itself, it can be carried out as an unloading soil that can be easily carried out.
BRIEF DESCRIPTION OF THE DRAWINGS [0008]
FIG. 1 is a flowchart showing a basic civil engineering improvement procedure in an embodiment of the present invention.
FIG. 2 is a schematic diagram showing a case of river construction as civil engineering work of the first embodiment.
FIG. 3 is a flowchart showing a construction processing procedure in the river construction of FIG.
[FIG. 4] A flowchart showing a restructuring process procedure for a seawall reinforcement target part in the process procedure SP7 of FIG.
FIG. 5 is a schematic diagram showing a case of road construction as a second embodiment.
FIG. 6 is a flowchart showing a processing procedure in road construction.
FIG. 7 is a schematic diagram showing a construction machine scaffolding construction as a third embodiment.
FIG. 8 is a flowchart showing a processing procedure in the construction machine scaffold construction shown in FIG.
FIG. 9 is a chart showing the cone index necessary for running the construction machine.
FIG. 10 is a chart showing the relationship between the modified paper powder material and the cone index.
FIG. 11 is a graph showing the relationship between cone index and addition ratio.

[0017]
Powdered chips based on the printed material to be cut and the paper material of the product base paper are scattered on the cross section of the cutting blade used for cutting.
[0106]
The scattered powdered chips are accumulated as a paper powder material through a filter.
[0107]
The paper dust material generated in this case is rough and contains chips.
[0108]
(9-2) Folding operation at the time of bookbinding Before the bookbinding of the printed matter or the bookbinding paper, the machine performs the operation of making a crease, but the paper fibers are scattered in powder form by rubbing the paper at the time of the operation. The scattered paper powder is accumulated as a paper powder material by a filter.
[0109]
The paper dust scattered by the crease operation at the time of bookbinding is fine, and scraps are also mixed.
[0110]
(9-3) Mixing work at the time of bookbinding In the process of bookbinding work, when gluing or binding, the mixing work is done such that the back of the book is fluffed. Accumulate as a paper powder material.
[0111]
The paper dust that scatters during the blending operation is coarse, and paper waste is also mixed during grit insertion.
[0112]
(9-4) Book processing work When commercializing a book, work is performed to polish three surfaces other than the back of the book, and the powder is scattered at that time. Accumulate as.
[0113]
At this time, the scattered paper powder has very fine eyes, and only paper powder is generated.
[0114]
(9-5) Processing of paperware products In the manufacture of paperware products such as paper containers and paper boxes, processing work is performed to polish the cross-section of the paper material in order to make the cross-section of the paper material uniform. The paper dust that scatters is collected as a paper powder material through a filter.
[0115]
In this case as well, the paper dust generated is very fine and only the paper dust is scattered.
[0116]
(10) Location where the paper dust material is generated The location where the paper dust material is generated where the improved paper powder material exemplified above is accumulated.

[0018]
The above-mentioned remodeled soil for reinforcement is generated by accumulating paper dust that scatters in almost all places where paper is handled, such as printing factories, bookbinding factories, paper container factories, return book operations, processing factories, waste paper processing operations, paper processing factories Paper powder materials that can be used for processing can be obtained.
[0117]
(11) Comparative Example In the river construction described above with reference to FIGS. 2 to 4, the revetment work can be completed at the site of the river construction by introducing the modified paper powder material into the construction generated soil having deteriorated strength. However, in the conventional case in which the modified paper powder material is not used, the soft soil 12 excavated and removed from the civil engineering target portion 8 is often transported to a mountain where there is a strong soil to be replaced with the soil. However, since only the method of carrying back the soil with high mountain strength to the civil engineering work target part 8 instead of the soft soil and backfilling can be adopted, securing the soil for backfilling or the civil engineering concerned In order to dispose of soil containing mud obtained by excavation from the construction target portion 8, a large amount of materials and work processes have been required.
[0118]
The revetment processing using the modified paper powder material described above with reference to FIGS. 2 to 4 can be performed at the river construction site 1 to secure the large amount of revetment material and work procedure, thereby solving the conventional problems I can do it now.
[0119]
(12) Other Embodiments (12-1) In the above-described embodiment, the number of times and the amount of the reformed paper powder material are not limited to this, and depend on the water content ratio and amount of the raw material to be reformed. And change to an appropriate amount.
[0120]
(12-2) In the above-described embodiment, when only the modified paper powder material is added to the raw soil, an appropriate amount of cement may be added thereto.
[0121]
(13) Utilization of ready-mixed concrete FIG. 20 shows the raw concrete used at the construction site, from the waste to the backfill material in the construction site described above with reference to FIGS. 2, 5, 7 and 12, An embodiment in which raw concrete waste can be utilized by obtaining a solidified construction material that can be used as a roadbed material will be described.

  The present invention relates to a civil engineering improvement method and a modified paper powder material, and can be applied to processing soft soil having a high water content.

  Conventionally, in civil engineering work such as river revetment work, when excavated soil that has deteriorated at the embankment site is replaced with improved soil or high-quality soil, the construction process requires a large amount of materials and work, so the strength is As a technique for simplifying replacement of reinforced improved soil, a method of utilizing finely divided waste paper has been proposed (see Patent Documents 1, 2, and 3).

JP 2007-197902 A JP 2008-106088 A JP 2001-121193 A

  However, it is difficult to realize improved soil with strength performance that can be practically used for civil engineering work with the conventional method using finely divided waste paper. If a reinforcing soil for reinforcement having strength is obtained during a short enforcement period, it is considered to be highly effective.

  The present invention has been made in consideration of the above points, and proposes a civil engineering improvement method and a modified paper powder material capable of obtaining a modified soil with enhanced strength in a short period of time in civil engineering. Is.

In order to solve such a problem, in the present invention, excavation / accumulation was performed by a construction machine (9, 26, 42, 62, 74) at a civil engineering work site (8, 22A, 40, 50, 60, 70, 81). By using soft soil (12, 29, 43, 55, 65, 73, 82) with a high water content as a treatment target, and adding and stirring the modified paper powder material made of powdered cellulose at a predetermined volume ratio The modified soil (15A, 15B, 16, 32, 33, 35, 42, 69, 73) having a high corn index strength is obtained by absorbing the water component contained in the soft soil into the powdery cellulose. The modified soil is reused at the civil engineering work site.
In addition, in the ready-mixed concrete treatment site (89), the ready-mixed concrete (91) is mixed with the reaction-preventing water and stored in the storage pool (92) as the waste liquid (93), and the waste liquid in the storage pool (92) is stored. By making the modified paper powder material (95) made of powdered cellulose into (93) and stirring, the water component contained in the waste liquid (93) is absorbed by the powdered cellulose. A granular material (98) consisting of a collection of hard large solid particles (97) is produced.
Furthermore, in the debris flow / collapse generation site (99), the softened soil (100) that has been accumulated is treated as a processing object, and the modified paper powder material (103) made of powdered cellulose is sprayed and stirred, thereby softening The water component contained in the soil is absorbed into the powdery cellulose to modify the plasticized modified soil (106), and the modified soil (106) is used as unloading soil to generate debris flow and collapse (99 ).

According to the present invention, at a civil engineering work site, a modified paper powder material made of powdered cellulose having a predetermined volume ratio is added to and mixed with soft soil having a high water content ratio excavated and accumulated by a construction machine. The water component contained in the soft soil is absorbed into the powdered cellulose to improve the modified soil having a high cone index strength, and the modified soil is reused at the civil engineering work site. In addition, the efficiency of civil works that treat soft soil with a high water content can be further improved.
In addition, at the disposal site of ready-mixed concrete, the modified paper powder material made of powdered cellulose is basically put into a ready-mixed concrete waste liquid, which is a processing target composed of concrete components, so that a large solid solid As a result of being able to be modified into a cluster of particles, it can be reused as backfill material or roadbed material at various construction sites.
Furthermore, at the site of debris flow and demolition, by introducing modified paper powder material made of powdered cellulose into soft soil, the soft soil to be treated can be softly deformed with loss of fluidity, and almost cellulose Since it does not become hard by itself, it can be carried out as an unloading soil that can be easily carried out.

It is a flowchart which shows the basic civil engineering improvement procedure in one embodiment of this invention. It is a basic diagram which shows the case of river construction as civil engineering work of 1st Embodiment. It is a flowchart which shows the construction processing procedure in the river construction of FIG. It is a flowchart which shows the reconstruction process procedure of the revetment reinforcement object part in process sequence SP7 of FIG. It is a basic diagram which shows the case of road construction as 2nd Embodiment. It is a flowchart which shows the process sequence in road construction. It is a basic diagram which shows the case of construction machine scaffold construction as 3rd Embodiment. It is a flowchart which shows the process sequence in the construction machinery scaffold construction of FIG. It is a graph which shows a cone index required for driving | running | working of a construction machine. It is a graph which shows the relationship between a modified paper powder material and a cone index. It is a graph which shows the relationship between a corn index and an addition ratio. It is a basic diagram which shows the case of the debris removal construction as 4th Embodiment. It is a flowchart which shows the process sequence in the debris removal construction of FIG. It is a basic diagram which shows the case of a pile hole formation construction as 5th Embodiment. It is a flowchart which shows the process sequence in the pile hole formation construction of FIG. It is a basic diagram which shows the case of dredged material removal construction as 6th Embodiment. It is a flowchart which shows the process sequence in the dredged material removal construction of FIG. It is a basic diagram which shows the case of sewage treatment construction as 7th Embodiment. It is a flowchart which shows the process sequence in the sewage construction of FIG. It is a basic diagram which shows the case of a ready-mixed concrete process. It is a basic diagram which shows the process of the soft soil by a debris flow or a collapse.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

(1) Basic civil engineering improvement procedure FIG. 1 shows a basic civil engineering improvement procedure used in one embodiment of a civil engineering improvement method according to the present invention. For civil engineering work such as construction, a basic civil engineering improvement procedure RT1 is executed. In the basic civil engineering improvement procedure RT1, the civil engineer first performs a process of digging out soft soil having a large water content ratio from the civil engineering work target portion as a raw soil in the processing routine RT2.

  Subsequently, the civil engineer generates the modified soil having the strength suitable for the civil engineering work object by putting the modified paper powder material into the soft soil excavated in the next processing routine RT3 and stirring it.

  Subsequently, the civil engineer reuses the modified soil generated in the next processing routine RT4 to reconstruct the civil engineering target.

  Thus, the civil engineer ends the basic civil engineering improvement procedure RT1 in the next processing routine RT5.

  According to the configuration of FIG. 1, when the civil engineer inputs the paper dust material into the soft soil dug in the processing routine RT3, the modified paper powder material shortens the water component contained in the soft soil. Due to the action of absorbing water rapidly over time, the excavated soft soil is solidified, thereby generating modified soil in which the civil engineering strength of the original soil that was the target of civil engineering work is enhanced. .

  The civil engineer recycles the generated modified soil so that the soft soil excavated from the civil engineering target portion (processing routine RT2) is removed in the processing routine RT4 so that it is backfilled. Reinforced civil works can be reconstructed.

The basic civil engineering improvement procedure RT1 shown in FIG. 1, as described below for various civil engineering works, by devising the method of charging the modified paper powder material according to the state of the civil engineering target part, The civil engineer can perform civil engineering work suitable for the purpose in an extremely short construction period by appropriately modifying soft soil in which the strength of various civil engineering target parts is inferior.
(2) River construction FIG. 2 shows the first embodiment. As shown in FIG. 2 (A), the river whose strength is inferior in the river construction site 1 due to the influence of the river flow 2 to be constructed. On the outside of both quay walls 3A and 3B, there are allowance walls 7A and 7B that separate them from levee bodies 6A and 6B with sufficient strength on the outside, and the river part between the allowance walls 7A and 7B is the construction target part 8 As shown in FIG. 3, the processing procedure RTN1 in the river construction is executed.

  When entering the processing procedure RTN1 in the river construction site 1, the civil engineer first excavates the civil engineering target portion 8 by the excavator 9 which is a construction machine in step SP1.

  Thus, the soft soil 12 whose strength is inferior as the civil engineering target part 8 surrounded by the allowance walls 7A and 7B and the riverbed base 11 made of soil with high strength that has not deteriorated directly guides the flow of the river. It is excavated together with the revetment member, and the waste material excluding the soft soil 12 is conveyed to the waste material storage site by the dump truck 10.

  Here, since the raw soil made of the soft soil 12 is a soil containing a large amount of water components (this is called a soil having a high water content), mud soil from the loading platform is used even if it is intended to be loaded quantitatively on the dump truck 10 as a transport machine. Moreover, since muddy water is in a state of leaking, it cannot be loaded directly on the dump truck 10.

  Therefore, in the next processing step SP2, the civil engineer puts it in the modified soil generation site in which an enclosed wall is formed so as not to allow mud or mud to leak out from the excavated raw soil over time.

Subsequently, in the next processing step SP3, the civil engineer puts the modified paper powder material 1 [m ³ ] into the excavated raw soil 10 [m ³ ] and stirs it with, for example, a shovel car which is a heavy machinery machine. Produce textured soil.

  At this time, the modified paper powder material is solidified by absorbing water for a short period of time with respect to the water components contained in the excavated high water content raw soil, thereby strengthening the strength of the raw soil whose strength has deteriorated. A modified soil obtained by reforming can be generated.

In the case of this embodiment, the cone index qc of the raw soil is as soft as qc = 50 [kN / m ² ], whereas the modified paper powder material was charged and stirred into this raw soil. Thus, the cone index qc could be stabilized to about qc = 200 [kN / m ² ].

  Here, the cone index qc is an index representing the load bearing performance of the soil, and is used as an index for determining whether or not the strength of the soil of the civil engineering structure meets the purpose of use.

  As a result, even if a fixed amount of the modified soil was loaded on the dump truck, it was improved so that mud or mud could be transported without leaking from the loading platform. A part of the soil is transported to the modified soil treatment plant, and the processing procedure RTN1 in the river construction is completed in the next processing step SP5.

In the case of this embodiment, in addition to this, the civil engineer moves to step SP6 of the other part of the modified soil generated in the processing step SP3 that has been carried to the modified soil treatment plant and moves to the modified soil. After the modified modified soil is generated by adding and stirring the modified paper powder material 1 [m ³ ] to the other part, the civil engineering work target part 8 is used by using the modified modified soil in the next processing step SP7. Are reconstructed and the processing procedure RTN1 in the river construction is completed in the above-described processing step SP5.

In the case of this embodiment, the reused modified soil obtained in this processing step SP6 is further added to the modified paper powder material 1 [m ³ ] and agitated, so that the raw soil 10 [m ³ ] is eventually mixed. As a result, 2 [m ³ ] of the paper dust material was added and stirred, and as a result, the cone index qc of the reused modified soil can be modified to about qc = 400 [kN / m ² ].

Since the reused modified soil reinforced to a strength of the cone index qc = 400 [kN / m ² ] can be evaluated as being improved to a high quality soil with respect to the flow of river water, As shown in FIG. 2 (B), the construction worker refills the reused modified soil as backfill portions 15A and 15B inside the allowance walls 7A and 7B by the excavator 9 and fills the riverbed base 11 with the embankment portion. As a result, the civil engineering work target part 8 is newly reconstructed.

  In the case of this embodiment, as shown in FIG. 4, the restructuring process procedure SP7 for the revetment reinforcement target portion is first performed at the processing step SP7X1 by using the reused modified soil as shown in FIG. 2B. After the backfill portions 15A and 15B are backfilled inside 7A and 7B, the reinforcement revetment walls 17A and 17B are newly constructed in the next processing step SP7X2, and then the reinforcement revetment walls 17A and 17B in the processing step 7X3. The reused modified soil is refilled on the riverbed base 11 as the embankment portion 16.

  In practice, the backfill portions 15A and 15B and the embankment portion 16 need to be sufficiently tightened to prevent settlement after construction, and therefore, a rolling compaction process is performed by a compacting heavy machinery machine during the backfilling operation.

  This rolling compaction treatment is actually effective because the reused modified soil actually used as the backfill portions 15A and 15B and the embankment portion 16 has been modified to a qc strength of about qc = 400. .

  In addition to this, as shown in FIG. 2C, the civil engineer removes the allowance walls 7A and 7B in the next processing step SP7X4, and then uses the reclaimed modified soil to make the dike body of the river 1A. After the embankment embankment portion 19 is constructed, a road bed / road body 20 is constructed as a road on the embankment embankment portion 19.

  In this case, the cement is put into the tub of the reused modified soil used for composing the roadbed / roadway, and the roadbed soil and the roadbed soil are generated by stirring and roads on the embankment embankment portion 19. Form.

  Thus, in the processing step SP7X5, the reconstruction processing procedure SP7 of the civil engineering target portion 8 is finished and the process returns to the main routine of FIG.

  According to the configuration of FIGS. 2 to 4, by digging out the soft soil 12 whose strength has deteriorated due to the influence of the river flow 2 of the river 1 </ b> A and introducing the modified paper powder material at the river construction site 1 and stirring it, By obtaining modified soil with improved strength and refilling it into the civil engineering target part 8 of the river 1A, it is possible to efficiently carry out river construction by reusing construction generated soil generated in river construction. .

(3) Road Construction FIG. 5 shows the case of the second embodiment when applied to the road construction site 20.

  As shown in FIG. 5 (A), the road construction in this case is because the soil constituting the road shoulder 23 is softened on the road 22 constructed by excavating the sloped ground 21 on the mountain side. Civil engineering work is performed according to the processing procedure RTN2 in the road construction shown in FIG.

  When entering the processing procedure RTN2 in road construction, the civil engineer first secures the scaffold portion 22B of the excavator 26, which is a construction machine, by cutting the excavated portion 28 made of high-quality soil in the road in processing step SP21.

  Subsequently, the civil engineer excavates the raw soil made of the soft soil 24 constituting the road shoulder 23 as the excavated portion 29 by the construction machine 26 brought to the road in the next step SP22 to form a modified soil generation site having a surrounding wall. Put in.

Subsequently, in the next processing step SP23, the civil engineer inputs and agitates the modified paper powder material 1 [m ³ ] and the cement 200 [kg] to the excavated raw soil 10 [m ³ ]. To produce modified soil.

In the case of this embodiment, the soft soil 24 has a cone index qc representing the strength of soil having a high water content containing a large amount of water and is about qc = 200 [kN / m ² ]. By introducing the material and cement, the cone index qc representing the strength of the modified soil is solidified to have a strength of about qc = 1200 [kN / m ² ].

  In this way, the CBR value can be improved from 0.3 to 25.1, and the plasticity index can be improved by mixing with good quality soil, so it can be reused for road body embankment and roadbed embankment. It can be modified to such an extent that it can be done.

  Subsequently, in the next processing step SP24, the civil engineer installs an L-shaped road shoulder reinforcement wall material 31 at a position corresponding to the road shoulder 23 of the excavated road 22, as shown in FIG. The modified soil generated in the above-described processing step SP23 between the road 22 and the road shoulder reinforcing wall material 31 is backfilled so as to be sequentially stacked as a road body bank 32 and a road bed bank 33, and then rolled by a roller machine 34.

  In this way, the laminated portion of the road body embankment 32 and the road bed embankment 33 formed between the slope 22 and the road shoulder reinforcement wall material 31 on the trough side of the road 22 securing strength is reinforced by rolling. A road portion is formed.

  In the case of this embodiment, the road builder forms an interference prevention backfill portion 35 between the road shoulder reinforcing wall material 31 and the rice field 27 following the valley side in the processing step SP25 following the processing step SP24. In step SP27, the processing procedure RTN2 in the road construction is terminated.

The backfill portion 35 for preventing interference has a cone index qc of qc = 400 [kN / m ² ] by introducing the improved paper powder material 2 [m ³ ] into the raw soil 10 [m ³ ] made of the soft soil 24. ] By using the modified soil modified to a certain degree of strength, and thereby improving the strength only with the raw soil and the improved paper powder material without containing cement as the modified soil, the road embankment 32 In addition, it is possible to prevent the cement 27 from being affected by alkalinization from the road bed embankment 33 to the paddy field 27.

  In the case of this embodiment, an inclined surface reinforcing wall member 36 is formed on the excavation portion 28 (FIG. 5A) between the road 22 and the inclined ground 21 (FIG. 5B).

  According to the above configuration, as a reinforcing material for the soft road shoulder 23, simply by adding and stirring the improved paper powder material to the soft soil obtained by excavation, at the road construction site, Since the strength of the raw soil can be improved in a short time, road construction can be performed more efficiently.

(4) Construction machinery scaffold construction In FIG. 7, reference numeral 40 denotes a construction machinery scaffold construction site as a third embodiment, on the construction road 41 (FIG. 7 (A)) or 44 (FIG. 7 (B)). For example, an excavator car runs as the construction machine 42.

  In the case of FIG. 7A, the construction road 41 is composed of soft soil containing a large amount of water component, so that the soft soil 43 is not covered with the caterpillar 42 </ b> A of the construction machine 42 in the soft soil 43. Since no resistance is received from this, it becomes idle.

  On the construction road 41 composed of such soft soil 43, the construction machine 42 cannot advance or retreat, and the work posture in which the construction machine 42 can perform the original construction work cannot be maintained.

  For such a construction road 41, the civil engineer executes the processing procedure RTN3 in the construction machine scaffolding construction of FIG. 8, and first enters the construction road 41 made of the soft soil 43 in the processing step SP31. The soft soil 43 composing the road 41 is excavated, and the excavated soft soil is put into a modified soil generation site having a surrounding wall, and the construction machine travels with respect to the excavated soft soil 43 in the next step SP32. In addition, an appropriate amount of modified paper powder material that provides the necessary cone index is added, and the soft soil into which the improved paper powder material is added in the subsequent processing step SP33 is thoroughly agitated with a stirrer to make the soft soil hard and large solids. Solidify into a cluster of particles.

  The solidified soft soil is backfilled to the construction road 41 excavated in the next processing step SP34, thereby completing the processing procedure RTN3 in the construction machine scaffolding construction, and as shown in FIG. 7B. As a construction road 44 for the construction machine 42, the construction machine 42 is replaced with a scaffold soil 45 having such a strength that the construction machine 42 can maintain a driving posture in which construction work can be performed, and thus the caterpillar 42A is not recessed.

Here, a numerical value as shown in FIG. 9 is generally designated as the cone index necessary for various types of construction machines to travel. For example, the cone index qc = 200 [kN / m ² ] or more for the super wetland bull tozer, Bulltozer 300 [kN / m ² ] or more,... Dump truck cone index qc = 1200 or more.

Here, as shown in FIG. 10, the relationship of the cone index qc [kN / m ² ] to the volume ratio of the paper dust material to the raw soil (that is, raw soil) is 189 at 1: 0 and 206 at 1: 0.1. , ..., 20.6 experimental results were obtained at 1: 0.6.

Based on the results of this experiment, it is confirmed that if the relationship of the cone index qc [kN / m ² ] to the change in “the ratio of the paper dust material to the raw soil” is shown, it changes as shown in FIG. As a result, the ratio (volume ratio) of the paper powder material can be selected as necessary for the cone index to be obtained.

  Thus, an appropriate cone index can be defined for the construction machine 42 traveling on the construction road 44 according to the degree of softness of the soft soil 43 on the construction road 41.

  According to the above configuration, when a necessary construction machine is used using the construction road 41 with respect to the construction road 41 configured by the soft soil 43 having various softnesses (FIG. 7 (A )) For the construction suitable for the construction site, the scaffold soil 45 (FIG. 7B) having a cone index suitable for the construction machine to be used can be realized by selecting the mixing ratio of the paper powder materials. A road 44 can be realized.

(5) Landslide removal work In FIG. 12, reference numeral 50 denotes a land collapse removal work site as the fourth embodiment, and the land fall removal work site 50 is a slope 51 before the collapse as shown in FIG. In FIG. 12B, when the soil destabilized by the water soaked in the ground 52 suddenly collapses, as shown in FIG. It remains in a state where it has accumulated as a crush 55 on top of (having strength).

  As described above with reference to FIG. 7A, the collapsed soil 55 is in a state where the soft layer made of the soft soil 43 containing a large amount of water component is raised on the ground having a wide and normal strength. .

  Therefore, in order to remove the soft soil constituting the collapsed soil 55, it is necessary to form the construction road 44 (FIG. 7B) having such a strength that the construction machine 42 can travel on the collapsed soil 55. .

  In order to solve this problem, the civil engineer executes the processing procedure RTN4 in the debris removal work shown in FIG.

  When entering the processing procedure RTN4 in the debris removal work, the civil engineer should first form a construction road in the processing procedure SP41 at the terminal portion of the debris 55 where a scaffold for the construction machine can be secured. The end of the debris 55 is excavated and removed by the demolition construction machine and placed in a production site having an enclosed wall.

  Subsequently, the civil engineer moves to processing step SP42, and as described above with reference to FIGS. 9 to 11 for the collapse in the modified soil generation site, the state of the water component included in the collapse 55 (that is, the water content). The modified paper powder material is charged at an appropriate volume ratio according to the ratio.

  Subsequently, in the next processing step SP43, the civil engineer thoroughly agitates the debris into which the modified paper powder material has been charged with the stirring equipment to solidify the debris.

  Subsequently, the civil engineer refills the collapsed rock excavated from the solidified collapse in processing step SP44 as a construction road.

  Subsequently, the civil engineer moves to the next processing step SP45, moves the demolition removal construction machine to the backfilled portion of the construction road, excavates and removes the new debris, and reforms having the surrounding wall. Put in the soil generation site.

  Thus, after the civil engineer enters the operation of excavating a new collapse in the state where the construction machine 42 is put on the construction road 44 with the cone index formed in the collapse, the above-described operation is performed. Return to the processing step SP42.

  In this processing step SP42, the civil engineer inputs the modified paper powder material for the newly excavated and removed debris, and in the next step SP43, thoroughly agitates with the agitation equipment to solidify the debris. In step SP44, the solidified debris is refilled in the excavation site as a construction road.

  In the same manner, the civil engineer repeatedly executes the loop of steps SP44-SP42-SP43-SP44-SP46 to form a construction road 44 (FIG. 7B) step by step in the collapsed soil, and By performing a process such as moving the construction machine 42 on the construction road 44 that has been formed, the landslide that has collapsed from the slope is moved one step at a time while the construction machine 42 is moved one step at a time. It gradually solidifies with quality paper powder material.

  According to the above configuration, the high moisture content of the debris is solidified step by step while creating a scaffold for the debris that has collapsed from the inclined surface due to the landslide and swelled to the flat portion 54. Thus, it is possible to realize a civil engineering work that can quickly and efficiently handle a landslide that is a natural disaster.

(6) Pile hole forming construction FIG. 14 shows a case of a pile hole forming construction site 60 as the fifth embodiment.

  In the pile hole formation construction site 60, the civil engineer enters the pile hole formation processing procedure RTN5 shown in FIG. 15 and executes the first step SP51, whereby the ground auger of the construction machine 62 for pile hole formation is applied to the ground 61. A pile hole 64 to be struck by the pile 63 is excavated, and a pile residual soil 65 made of soft soil having a high water content from the pile hole 64 is formed on a modified soil generation site 67 having an enclosed wall 66 provided on the ground 61. Put in.

  Subsequently, in the next processing step SP52, the civil engineer modifies the volume ratio corresponding to the moisture content with respect to the pile residual soil 65 held on the modified soil generation site 67 as shown in FIG. In the next step SP53, a modified soil 69 which is modified so as to increase the cone index qc of the pile residual soil 65 by stirring with a stirring machine 68 such as a backhoe as a construction machine in the next step SP53. obtain.

  This modified soil 69 can be solidified and reformed to such an extent that it can be piled up on the ground 61 by rapidly reducing the moisture contained in the pile residual soil 65.

  Here, in the next processing step SP54, the civil engineer performs a process of transporting a part of the modified soil 65 to a waste disposal site by a transporting machine such as a dump truck, and then performs the next step. In SP55, the processing of the pile hole forming processing procedure RTN5 is terminated.

  At the same time, the civil engineer adds an appropriate amount of improved paper powder material and stirs the remaining portion of the modified soil 69 obtained by modifying the pile residual soil 65 in the processing step SP53 described above in the processing step SP56. Further, the backfill soil having a larger cone index is obtained, and the pile hole 64 is backfilled with the backfill soil in the next processing step SP57.

  Thus, the civil engineer ends the processing of the pile hole formation processing procedure RTN5 in processing step SP58.

  According to the above configuration, the volume ratio corresponding to the moisture content of the pile residual soil 65 with respect to the pile residual soil 65 made of soft soil that has flowed out by excavating the pile hole 64 in the ground 61 by the pile hole forming construction machine 62. By adding the amount of the modified paper powder material in an amount, the solidified modified soil can be obtained, so that the pile residual soil 65 can be disposed of in the disposal site by the transporting machine. Further, by introducing an appropriate amount of modified paper powder material, it is possible to obtain a backfilling soil having a cone index qc strength that can refill the pile hole 64, and thereby, a pile hole forming work The pile residue soil 65 can be efficiently processed at the site 60.

  By the way, in conventional pile hole formation work, cement is used as a method for solidifying pile soil with high water content, but this method requires a curing period of 1 to 2 days, so pile hole formation work 60 It is easy to secure the space to hold the pile remaining soil 65 at the construction site and the construction period.

  On the other hand, when the above-mentioned modified paper powder material is used, the moisture reduction effect by the modified paper powder material can occur in a short period of time (in front of the civil engineer).

  For example, since the solidification effect that can be transported by the transporting machine in a time of about 30 minutes can be realized with respect to the pile residual soil 65 of one pile hole 64, the work period can be shortened easily.

(7) Dredging Removal Work FIG. 16 shows the case of the dredging removal work site 70 as the sixth embodiment, and the civil engineer executes dredging removal processing procedure RTN6 shown in FIG. Perform removal.

  In the dredging removal work, the civil engineer executes the dredging removal processing procedure RTN6 shown in FIG. 17 in the dredging work target environment in which the bottom of the water is removed by removing the soil and the like in a water channel utilization environment such as a harbor, river, or canal. .

  When entering the dredged soil removal processing procedure RTN6 in FIG. 17, the civil engineer first includes water from the bottom 72 of the river 71 from which the water to be dredged is drained as shown in FIG. 16A in the processing procedure SP61. The earth and sand 73 is accumulated using a dredge machine 74 made of, for example, an excavator.

  Subsequently, in the next processing step SP62, the civil engineer puts the sand and sand 73 in the surrounding wall 75 provided so as to surround the accumulated sand and sand 73 as shown in FIG. The earth and sand 73 is modified and solidified by mixing and stirring the powder material.

  The earth and sand 73 solidified here can be solidified to such an extent that it can be quantitatively loaded on the loading platform of the transporting machine 76 made of, for example, a dump truck.

  Therefore, the construction contractor loads and transports the solidified sediment 73 in the next processing step SP63 on the transporting machine 76 as shown in FIG. 16 (B), and in FIG. 16 (C As shown in FIG. 5, the soil is stored as ordinary residual soil 73 in the dredged soil storage place 77.

  Thus, the civil engineer ends the dredging removal processing procedure RTN processing at processing step SP65.

  In the above configuration, dredged soil that accumulates further along the riverbed in the channel operating environment generally has a moisture content of 100 [%] to 500 [%], and there is a problem that treatment at the construction site is not easy.

The accumulated density is high in fluidity because the cone index qc is as small as 50 [kN / m ² ], and flows out from the loading platform of the dump truck, which is a transporting machine, when the material is unloaded from the dredged soil removal construction site 70. As a result, they could not be piled on a normal transport machine.

In this regard, according to the dredged soil removal construction processing procedure described above with reference to FIGS. 16 and 17, the corn index qc is set to qc = 200 [kN / m ² ] can be reformed and solidified, so that the clay from the clay removal work site 70 can be more easily processed.

(8) Sewage Treatment Construction FIG. 18 shows a case where a treatment is performed to remove only the crushed stone material by applying washing water when crushing rocks at the quarry construction site 80 as a seventh embodiment.

  The washing water after being used for the washing is separated from the crushed stone material product as sewage is obtained by washing away the crushed rock particles or fine crushed stones with washing water.

  The sewage is dehydrated and pressed in the dehydrated cake generating device 81 of FIG. 18, and then dehydrated as a dehydrated cake 82 made of crushed pieces in various shapes, and is formed below the dehydrated cake generating device 81. It is dropped into the cake outlet 83.

  The civil engineer who processes the dehydrated cake modifies the dehydrated cake 82 into a material that can be reused according to the sewage treatment procedure RTN7 shown in FIG.

  When the civil engineer enters the sewage treatment procedure RTN7, first, in the treatment step SP71, the dewatered cake 82 obtained from the dewatered cake generator 81 in the quarry is accumulated by an accumulation machine such as a shovel car.

  In practice, the dewatered cake 82 is a high moisture content waste stone containing a large amount of water, and therefore, it is placed in a modified soil generation site formed by surrounding walls that do not allow water to flow.

  Subsequently, the civil engineer mixes the modified paper powder material with the dewatered cake 82 accumulated in the next processing procedure SP72 and stirs it with a stirring machine such as a shovel car so as to reduce the moisture contained in the dehydrated cake 82. To reform.

  The modified dehydrated cake thus becomes dry in step SP73 and becomes easy to be plasticized, and the civil engineer mixes the modified dehydrated cake 82 with the crushed stone already collected from the existing equipment in the next step SP74. Let it be reused as a new crushed stone material.

  Thus, the civil engineer ends the sewage treatment procedure RTN7 in the process step SP75.

  According to the above configuration, the dehydrated cake 82 can be reused by reducing the water component contained in the dehydrated cake generated by washing when the crushed stone product is obtained in the quarry. Quality.

  Incidentally, since the dehydrated cake 82 taken out from the dehydrated cake production device 81 was originally sewage, it had a clay-like form, so that conventionally it had to be dried or crushed by a machine for reuse. However, because the water content was high, it took time and place for drying, and it was difficult to crush because it adhered to the machine. By easily improving the water content contained in the paper powder material, it can be modified into a material that can be easily reused.

(9) Accumulation of modified paper powder material The modified paper powder material is accumulated by the following method.

(9-1) Cutting of printed matter When cutting a printed matter or product base paper of the printed matter according to size, the cross section of the cutting blade used for the cutting is based on the printed matter to be cut or the paper material of the product base paper. Powdered chips are scattered.

  The scattered powdered chips are accumulated as a paper powder material through a filter.

  The paper dust material generated in this case is rough and contains chips.

(9-2) Folding operation at the time of bookbinding Before the bookbinding of the printed matter or the bookbinding paper, the machine performs the operation of making a crease, but the paper fibers are scattered in powder form by rubbing the paper at the time of the operation The scattered paper powder is accumulated as a paper powder material by a filter.

  The paper dust scattered by the crease operation at the time of bookbinding is fine, and scraps are also mixed.

(9-3) Mixing work at the time of bookbinding In the process of bookbinding work, when gluing or binding, the mixing work is done such that the back of the book is fluffed. Accumulate as a paper powder material.

  The paper dust that scatters during the blending operation is coarse, and paper waste is also mixed during grit insertion.

(9-4) Book processing work When commercializing a book, work is performed to polish three surfaces other than the back of the book, and the powder is scattered at that time. Accumulate as.

  At this time, the scattered paper powder has very fine eyes, and only paper powder is generated.

(9-5) Processing of paperware products In the manufacture of paperware products such as paper containers and paper boxes, processing work is performed to polish the cross-section of the paper material in order to make the cross-section of the paper material uniform. The paper dust that scatters is collected as a paper powder material through a filter.

  In this case as well, the paper dust generated is very fine and only the paper dust is scattered.

(10) Generation location of paper dust material The generation location of the paper dust material in which the improved paper powder material exemplified above is collected includes a printing factory, a bookbinding factory, a paper container factory, a return work, a processing factory, a used paper processing work, By collecting paper dust that scatters at almost every place where paper is handled, such as a paper processing factory, a paper dust material that can be used for the above-described reinforcing modified soil generation processing can be obtained.

(11) Comparative Example In the river construction described above with reference to FIGS. 2 to 4, the revetment work can be completed at the site of the river construction by introducing the modified paper powder material into the construction generated soil having deteriorated strength. However, in the conventional case in which the modified paper powder material is not used, the soft soil 12 excavated and removed from the civil engineering target portion 8 is often transported to a mountain where there is a strong soil to be replaced with the soil. However, since only the method of carrying back the soil with high mountain strength to the civil engineering work target part 8 instead of the soft soil and backfilling can be adopted, securing the soil for backfilling or the civil engineering concerned In order to dispose of soil containing mud obtained by excavation from the construction target portion 8, a large amount of materials and work processes have been required.

  The revetment processing using the modified paper powder material described above with reference to FIGS. 2 to 4 can be performed at the river construction site 1 to secure the large amount of revetment material and work procedure, thereby solving the conventional problems I can do it now.

(12) Other Embodiments (12-1) In the above-described embodiment, the number of times and the amount of the reformed paper powder material are not limited to this, and depend on the water content ratio and amount of the raw material to be reformed. And change to an appropriate amount.

(12-2) In the above-described embodiment, when only the modified paper powder material is added to the raw soil, an appropriate amount of cement may be added thereto.

(13) Utilization of ready-mixed concrete FIG. 20 shows the raw concrete used at the construction site, from the waste to the backfill material in the construction site described above with reference to FIGS. 2, 5, 7 and 12, An embodiment in which raw concrete waste can be utilized by obtaining a solidified construction material that can be used as a roadbed material will be described.

  The ready-mixed concrete manufacturing company carries out the work of loading the manufactured ready-mixed concrete on a concrete mixer truck and supplying it to the construction site, but if the ready-mixed concrete carried to the construction site remains unusable, Before solidifying the ready-mixed concrete remaining in the mixer truck, bring it back to the disposal ready-mixed concrete processing site 89 shown in FIG. 20A so that the ready-mixed concrete in the mixer truck does not harden together with a large amount of water in the storage pool. And is disposed of as an industrial waste liquid.

  That is, as shown in FIG. 20 (A), the ready-mixed concrete 91 in the concrete mixer truck 90 is dropped into the storage pool 92, and is disposed in the storage pool 92 as shown in FIG. 20 (B). A waste liquid 93 obtained by mixing the ready-mixed concrete 91 with the reaction preventing water is stored.

  On the other hand, when all of the ready-mixed concrete carried to the construction site is used and returned without leaving the ready-mixed concrete mixer truck 90, the ready-mixed concrete mixer truck 90 cleans the tank with water, and the washing water. Is stored in the storage pool 92 as ready-mixed concrete 91 for disposal.

  Thus, the waste liquid 93 not solidified is stored in the storage pool 92. When the waste liquid 93 reaches a predetermined amount, the modified paper powder material 95 is stored using the paper powder input vehicle 94. After charging the waste liquid 93 stored in the pool 92, an operation is performed in which the waste liquid 93 stored by the agitating machine 96 and the input modified paper powder material 95 are agitated.

The reformed paper powder material 95 to be added here is added in a volume ratio of 5 to 30% with respect to the waste liquid 93 and is stirred by the stirring machine 96 for about 3 minutes per 1 [m ³ ].

  At this time, the water in the waste liquid 93 is absorbed into the modified paper powder material 95, so that it gradually loses its fluidity and can finally be put on the palm as shown in FIG. It is modified to a granular material 98 consisting of a collection of large solid particles that are hard to the extent.

  Since the grain material 98 is basically composed of a ready-mixed concrete component, it does not require a curing period and increases in strength, so that it can be used as a backfill material in various construction sites including the construction site described above. Can be used as roadbed material.

  According to the above configuration, by modifying the ready-mixed concrete 91, which is a waste having a high moisture ratio, with the modified paper powder material 95, it is possible to realize high practicality that can be used as a construction material.

(14) Treatment of Soft Soil by Debris Flow and Landslide As described above with reference to FIG. 12, on the slope 51 before the collapse, the soil destabilized by the water soaked in the ground 52 suddenly collapses and becomes the debris 55 When the volume remains on the plane portion 54 (having normal strength) immediately below or when a debris flow is generated by a large amount of rainwater, the flowed down soil as shown in FIG. FIG. 21 (A) shows an embodiment in the case where soft soil that has been volumed in the debris flow / collapse site 99 is processed when it remains in the state.

  In this case, as shown in FIG. 21 (A), the soft soil 100 having a high water content is volumetric with fluidity on the ground 101 having normal strength, so the soft soil 100 is directly removed. It is in a difficult state.

  Incidentally, such soft soil 100 contains a large amount of water and has high fluidity. Therefore, it is difficult to directly put it in a soil bag or to load it on a dump truck. However, even if the soft soil 100 is directly removed by hand, there is a problem that workability is extremely deteriorated.

  As a means for solving this problem, in the embodiment shown in FIG. 21A, the operator 102 puts the modified paper powder material 103 in the transport bag 104, transports it, and spreads it on the soft soil 100. As shown in 21 (B), the soft earth 100 is manually stirred by a stirring / accumulating tool 105 such as a shovel.

  At this time, moisture contained in the soft soil 100 is absorbed by the paper powder of the modified paper powder material 103, and the soft soil 100 gradually loses fluidity and is reformed into a plastic state.

  The state of the soft soil 100 is modified so that the soft soil 100 loses its fluidity and becomes plastic while the worker 102 manually stirs and stacks the ground 101 with the stirring / stacking tool 105. By being modified to the soil 106, the soft and solid shape is maintained according to the operation of the stirring / accumulating tool 105, so that the modified soil 106 can be piled on the ground 101.

  The soft soil 100 in this state has changed to a modified soil 106 that loses its fluidity and can be softly deformed. As shown in FIG. By loading the accumulated modified soil 106 into the loading platform of the dump truck 107 as a large amount of unloading soil 106A, it can be unloaded from the debris flow / demolition site 99 using mechanical force, and divided into the unloading soil 106B in a soil bag 108. It can be stored and carried out manually.

  According to the embodiment of FIG. 21, in the debris flow / collapse site 99, the soft soil 100 volume on the ground 101 is softly spread by manually spreading the modified paper powder material 103 and manually stirring and accumulating. By being able to be reformed to the solid modified soil 106, it is possible to perform the removal work of the soft soil 100 by the manual work of the worker 102 under the conditions suitable for the situation of the debris flow / collapse site 99. it can.

  Accordingly, the modified paper powder material 103 sprayed on the soft soil 100 is substantially composed of cellulose, so that it does not have self-hardening properties that are hardened by itself, so that it is handled when it is transported as the unloading soil 106A and 106B. Is easy.

  Moreover, since the pH of the modified soil 106 is in the vicinity of 7, the soft soil 100 can be safely treated without giving an environmental load to animals, plants, aquatic organisms, and other ecological forms.

  The present invention can be used at a construction site for high moisture content raw soil.

  1 ... River construction site, 1A ... River, 2 ... River flow, 3A, 3B ... Both quay parts, 6A, 6B ... Embankment body, 7A, 7B ... Allowance wall, 11 ... River bottom base, 15A, 15B …… Refilling portion, 16 …… Filling portion, 19 …… Building embankment filling portion, 20 …… Road construction site, 21 …… Sloped ground, 22 …… Road, 22A …… Construction target portion, 22B …… Scaffolding section, 23 ... road shoulder, 24 ... soft soil, 25 ... reinforced wall material, 26 ... construction machine, 27 ... paddy field, 28, 29 ... excavation part, 32 ... road body embankment, 33 ... Roadbed embankment, 34 ... Roller machine, 35 ... Backfill part for interference prevention, 40 ... Construction machinery scaffolding construction site, 41, 44 ... Construction road, 42 ... Construction machinery, 43 ... Soft soil, 50 …… Demolition site, 51 …… Slope, 52 …… Underground, 53 …… Disrupted slope, 54 …… Surface part, 55 ... Debris, 60 ... Pile hole formation work, 61 ... Ground, 62 ... Pile hole formation construction machine, 63 ... Earth auger, 64 ... Pile hole, 65 ... Pile residual soil, 66 …… Siege wall, 67 …… Reformed soil generation site, 69 …… Reformed soil, 70 …… Soil removal work, 71 …… River, 72 …… River bottom, 73 …… Sediment, 74… 75 ...... Enclosure wall, 76 ... Transport machine, 77 ... Dust storage place, 80 ... Crush quarry construction, 81 ... Dehydrated cake generator, 82 ... Dehydrated cake, 89 ... Processing of ready-mixed concrete On site, 90 ... Ready-mixed concrete mixer, 91 ... Ready-mixed concrete for disposal, 92 ... Storage pool, 93 ... Waste liquid, 94 ... Vehicle for loading paper dust, 95 ... Material for modified paper powder, 96 ... Agitation machine, 97 ... solid particles, 98 ... granular material, 99 ... debris flow , 100 ... soft soil, 101 ... ground, 102 ... worker, 103 ... reformed paper powder material, 104 ... transport bag, 105 ... stirring and accumulating tool, 106 ... modified soil, 106A ... ... Large-scale unloading soil, 106B ... Subdivided unloading soil, 107 ... Dump truck, 108 ... Soil bag

In order to solve such a problem, in the present invention, in a civil engineering work site , a construction site, and a debris flow / collapse site (8 , 22A , 40, 50 , 60 , 70 , 81 , 89 , 99 ) , Soft soil (12, 29, 43, 55, 65, 73, 82) with a high water content , excavated and accumulated, is treated as a powder that has a predetermined volume ratio and is generated to scatter from the paper body. was by powdered cellulose made by by a modified paper powder material was charged stir, the water component contained in the soft Jakudo (12,29,43,55,65,73,82), met flour powder form using only powdered cellulose caused to scatter from the paper body Te, even under conditions that do not use other solidifying agents, by water, immediate, the strength of the cone index greater reformed soil (15A , 15B, 16, 32 , 33 , 35 , 42, 69 , 73 , 98 , 106 ), and the modified soil (15A, 15B, 16 , 32 , 33 , 35 , 42 , 69 , 73 ) whose strength of the cone index is increased. , the 98,106), civil construction site, construction site, occurrence site of debris flow-Kuzuredo (8,22A, in 40,50,60,70,81,89,99), excavation and integrated construction target Reuse it so that it is backfilled into parts .
In or waste棄用raw concrete processing site (89), and stored as a waste liquid reservoir pool (92) waste raw concrete (91) by mixing the anti-reaction water (93), waste reservoir pool (92) for processing the liquid (93), by a powder stirred by introducing the reformed paper powder material (95) made of cellulose caused to scatter from the paper body, the waste liquid (93) the aqueous component contained, a powdery alone is water powdered cellulose caused to scatter from the paper body, even under conditions that do not use other solidifying agents, immediate manner, hard large solid particles A granular material (98) consisting of a cluster of (97) is generated.
In generation site soil stone stream-Kuzuredo the further (99), as a processing target推積the soft soil (100), a powder consisting of powdery cellulose caused to scatter from the paper body breaks by stirring sprayed quality paper powder material (103), the water component contained in the soft soil, a powder only by water to powdered cellulose caused to scatter from the paper body Even under the condition where no other solidifying agent is used, the modified soil (106) having plasticity is immediately reformed, and the debris flow / collapse generation site (99) using the modified soil (106) as unloading soil. ).

According to the present invention, civil construction site, construction site, in generating site debris flow-Kuzuredo for drilling integrated the water content ratio is high soft soil, scattering from the paper body to a powder having a predetermined volume ratio by using only powdered cellulose caused to stir by introducing the reformed paper powder material under conditions using no other solidifying agent, a water component contained in the soft soil, the powder Improving the soil with high strength of corn index instantly by absorbing water into cellulose, and reusing the modified soil at civil engineering construction sites , construction sites, debris flow and debris generation sites Accordingly, the enforcement efficiency of civil engineering work or the like for processing the water content ratio is high soft soil can further improve.
In addition, at the disposal site of ready-mixed concrete, the modified paper powder material made of powdered cellulose that is powdered and generated so as to scatter from the paper body is basically a processing object composed of concrete components. By putting it in the ready- mixed concrete waste liquid, it can be instantly reformed into a collection of hard, large solid particles, so that it can be reused as backfill material or roadbed material at various construction sites.
Furthermore, in the debris flow / demolition site, the soft soil that is the object of treatment by introducing the modified paper powder material made of powdered cellulose that is powdered and scattered from the paper body into soft soil, The fluidity is lost instantly and it can be softly deformed. Moreover, since it is substantially made of powdered cellulose, it does not become hard by itself and can be carried out as an unloading soil that can be easily carried out.

Claims (7)

Reduce the moisture content of the above-mentioned soft soil by adding and mixing the modified paper powder material with a predetermined volume ratio to the soft soil with high moisture content excavated and accumulated by construction machinery at the civil engineering work site. A civil engineering work improvement method, comprising: modifying the modified soil into a modified soil and reusing the modified soil at the civil engineering work site. The volume ratio of the modified paper powder material to the soft soil excavated / accumulated is solid so that no mud or muddy water leaks from the loading platform during loading and transportation when the modified soil is loaded on a transport machine. The civil engineering improvement method according to claim 1, wherein a value to be converted is selected. When the volume ratio of the modified paper powder material to the soft soil excavated and accumulated is backfilled to the trace of the soft soil removed by excavating and accumulating the modified soil with the construction machine, the soft soil The civil engineering improvement method according to claim 1, wherein the value is selected so as to have a strength as a reinforcing soil of the trace of the mark. The volume ratio of the modified paper powder material to the soft soil that serves as a scaffold for the construction machine is determined so that the construction machine does not sink into the soft soil when the construction machine travels on the scaffold. The civil engineering improvement method according to claim 1, wherein the value is selected so that the strength is sufficient to enable construction work. A modified paper powder material that is reformed into modified soil by reducing the water content ratio of the soft soil by adding to and stirring the soft soil that contains a large amount of moisture,
A modified paper powder material characterized in that paper powder is accumulated through a filter. At the disposal site for waste ready-mixed concrete, mix the ready-mixed concrete with water for reaction prevention and store it as a waste liquid in the storage pool, and then add and stir the modified paper powder material into the waste liquid in the storage pool. A method for treating raw concrete waste, characterized in that a granular material comprising a collection of hard large solid particles is produced. At the site where debris flow and collapse occurs, the soft soil is sprinkled and stirred to the soft soil that has been accumulated, and the soft soil is modified into a plastic modified soil. A method for treating soft soil, characterized in that the soil is unloaded from the site where the debris flow and debris is generated.

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