JP5625331B2 - Soil improvement device - Google Patents

Description

The present invention relates to soil modifying apparatus used for soil improvements of soil generated in a construction site.

  Conventionally, when the foundation of buildings, roads, airfields, etc. is newly constructed or the aging of the existing ground is improved, the ground is repaired. Often, soils with high moisture content must be handled. In addition, a lump that should be processed, such as stone material for the roadbed layer, is generated below the surface layer of the pavement, and soft soil that cannot be reused as roadbed material or roadbed material is found under the roadbed layer. It may occur. In addition, when excavating a tunnel or the like by the shield method, sludge may be generated.

  In this case, all the remaining soil generated from the construction site must be treated as construction generated soil, and when disposed as industrial waste, there is a problem in terms of environmental impact, but the construction generated soil should be backfilled and reused. In addition, since soft soil or sludge has a high water content and cannot be reused as it is, soil improvement treatment is performed by modifying the residual soil with a soil conditioner (see Patent Document 1). Reuse, that is, recycling such as backfilling or use for another purpose has been attempted.

JP-A-7-82984

  However, in the soil improvement treatment of the above soil, the residual soil generated at the construction site is transported to a treatment facility where the soil improvement is performed by a transportation means such as a freight vehicle, and has been modified after the soil improvement at the treatment facility. The soil was again transported to the place where it should be used by means of transport.

  Therefore, there is a problem that when the soil is reciprocated to a treatment facility away from the construction site, the global environment may be adversely affected by carbon dioxide generated from the exhaust gas of the truck.

Accordingly, the present invention is to solve the above problems, and an object thereof is to provide a soil modifying equipment capable of performing soil improvement in consideration of the global environment suppress the generation of carbon dioxide.

The invention of claim 1 includes a soil input unit for supplying soil, a crushing unit for crushing the soil, heating means for heating and drying the soil by an electric heater device and an electric hot air device, and the soil. An improver input unit for introducing an improver, an agitation unit for agitating the soil and the improver, a discharge unit for discharging the soil modified by the agitation unit to the outside of the soil quality improvement device body, and the soil quality A generator is provided as a power source of the improvement device main body, and the electric heater device is detachably provided on the outer shell surface of the soil improvement device main body .

According to the first aspect of the present invention, the soil quality improvement device is brought into the construction site where the soil to be improved is generated so that the soil can always be improved at the site or in the vicinity of the site, and the soil is improved far away. By eliminating the need to transport to facilities, it is possible to suppress the generation of carbon dioxide generated during transport and to improve soil quality in consideration of the global environment. In addition, the soil introduced into the soil improvement device by the heating means can be heated to accelerate the drying of the soil, and thereby the reaction between the soil and the soil improvement agent can be accelerated, thereby improving the soil improvement effect of the soil. Furthermore, by stopping the power of the self-propelled vehicle during the soil reforming process, the generation of carbon dioxide generated during the soil reforming process is suppressed, and the soil quality is improved with consideration for the global environment. be able to. In addition, the electric heater device can be externally attached to and detached from the outer surface of the soil improvement device main body.

It is a side view of the soil quality improvement apparatus in the Example of this invention. It is a top view of a soil improvement device same as the above. It is a rear view of a soil improvement apparatus same as the above. It is explanatory drawing which shows the flow of the soil from collection to discharge | emission in a present Example same as the above. It is a chart figure which shows the soil improvement method by a soil improvement device same as the above. FIG. 6A shows a cross-sectional view before road widening work, and FIG. 6B shows a cross-sectional view after road widening work.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  FIGS. 1-6 shows an example of embodiment of this invention, 1 is a self-propelled soil improvement apparatus which is a soil improvement apparatus in this invention, and is a self-propelled conveyance means which used motive power as an engine. As a self-propelled vehicle, and a soil improvement device main body 5 that can be mounted on a loading platform 4 installed on a body frame 3 of the truck 2.

  The soil improvement device main body 5 includes a hopper 6 as a soil input unit for supplying soil, a crushing unit 7 for crushing the soil input from the hopper 6 by a rotary blade driven by a motor, and the crushed soil by a motor. Conveying means 8 for conveying by a driving conveyor, etc., an improving agent feeding section 9 for introducing a soil improver in the middle of the conveying means 8, and the soil and soil improving agent conveyed from the conveying means 8 by a motor driven screw or the like Each apparatus includes a mixer 10 as a stirring means for stirring, and a soil discharge unit 11 that is provided at the rear of the mixer 10 protruding from the rear end of the loading platform 4 and discharges the modified soil.

  In addition, power is supplied to the loading platform 4 as a power source of the soil improvement device body 5 to motors and control means (not shown) of each device such as the crushing section 7, the conveying means 8, the improving agent charging section 9, the mixer 10. A generator 12 is mounted.

  As shown in FIG. 2 or FIG. 3, the soil improvement device main body 5 includes an electric heater device 13 and a hot air device 14 as heating means, both of which are electric power supplied from the generator 12. Is the power source.

Here, the electric heater device 13 will be described in detail. Non-woven type sheet heating elements mixed with filaments such as carbon fiber and polyester, other line heating elements, and linear heating elements such as sheathed heaters are provided. comprising a sheet-like or plate-like permanent magnet 13B on one side of the electrical planar heating element 13A made of those formed in planar, which was equipped with a heat-insulating layer 13 C on the other side, a sheet-like permanent magnet 13B is also called a magnet sheet, a rubber magnet, a bond magnet, etc., and has excellent flexibility. The permanent magnet 13B provided on one side surface of the electric planar heating element 13A is used for the soil improvement device main body 5. The outer surface 5A made of steel can be attached and detached externally. The electric heater device 13 is preferably mounted on the outer surface of the soil improvement device main body 5 corresponding to any one or more of the hopper 6, the crushing unit 7, the conveying means 8, and the mixer 10.

  Furthermore, the warm air device 14 supplies warm air F generated by including an electric heating element and a blower (both not shown) to the soil inside the soil quality improvement device main body 5 (particularly, inside the crushing portion 7). .

  As the soil condition improver of this embodiment, for example, an appropriate one such as a cement type, an asphalt type, or an aqueous solvent type can be adopted.

  Next, the effect | action is demonstrated about the said structure. First, the generator 12 is started and each apparatus of the soil improvement apparatus main body 5 is made into a standby state. Then, the soil quality improvement device 1 or the truck T is moved to the construction site such as water and sewage work, construction work, building work, and other work, and the soil S1 containing soft soil or sludge generated from the construction site is excavated. The civil engineering machine E directly puts it in the hopper 6 of the soil improvement device 1 or loads it on the truck T and then moves the truck T to the soil improvement device 1 stopped near the construction site and loads it. The soil S1 thus prepared is put into the hopper 6 of the soil quality improvement device 1 (see FIG. 4). The vicinity of the construction site is a portion shorter than the road from the construction site to the processing plant (processing facility) for soil improvement.

  Next, the soil (step 1) thrown in from the hopper 6 is crushed by the crushing part 7 (step 2), and the electric heater apparatus 13 of the crushing part 7 is made like the soil quality improvement process of the soil shown in FIG. The soil inside the crushing unit 7 is heated by heating the outer shell, and the soil inside the crushing unit 7 is further heated by the warm air supplied from the warm air device 14 to the inside of the crushing unit 7 to dry the soil. Is performed (step 3). Thereafter, the soil crushed and dried in the crushing unit 7 is sent to the conveying means 8 and conveyed to the mixer 10 by the conveying means 8 (step 4).

  Here, in the middle of being transported by the transport means 8, the soil improver is charged into the soil from the improver charging unit 9 (step 5), and the soil and the soil improver are stirred in the mixer 10 to modify the soil. Performed (step 6). The modified soil is discharged from the soil quality improvement device main body 5 to the outside of the rear of the loading platform 4 of the truck 2 from the soil discharge unit 11 (step 7).

  Then, the modified soil S2 discharged from the soil quality improvement device 1 carried into the construction site is backfilled to the original construction site as it is, or the soil quality improvement device 1 is moved to another construction site to fill the embankment. used.

  In addition, the modified soil S2 discharged from the soil improvement device 1 in the vicinity of the construction site is also loaded on the truck T, transported to the original construction site, and backfilled (see FIG. 4) or other construction work. It is transported to the site and used as embankment. Thus, the soil S2 after the modification by the soil quality improvement device 1 is used for soil improvement at the construction site where the remaining soil is reused and banking at other construction sites, and the amount of residual soil generated from the construction site is minimized. At other construction sites, it is reasonable to purchase the shortage of embankments to a minimum.

  FIG. 6 shows an example of road widening work. As shown in FIG. 6 (a), if the remaining soil at the construction site is the soil S1, S2 on the current shoulder, the viscosity or moisture content of the soil S1, S2, etc. Most of the cases are modified due to physical properties, and as shown in FIG. 6 (B), it is economical because it can be reused for the insufficient portion L of the embankment. In FIG. 6, R is the road surface, L is the modified soil S2 that has been embanked in the insufficient soil location, G is the variable lateral groove newly provided on the widened portion side, and B is embanked as the supporting ground for the variable lateral groove G. The soil after modification.

  Here, the engine of the truck 2 is stopped from the stage where the soil is put into the hopper 6 (step 1) to the stage where the modified soil is discharged (step 7), so that the carbon dioxide contained in the exhaust gas generated from the truck 2 is stopped. The generation of carbon and other harmful substances can be suppressed.

  In addition, the stirring time of the soil and the soil conditioner by the mixer 10 is set according to the change state of physical properties such as the viscosity or moisture content of the soil, so that the soil can be modified without adding more soil conditioner than necessary. It becomes possible, and it becomes possible to suppress the addition amount of a soil improver to the minimum necessary, and the cost concerning the soil improver is suppressed, which is economical.

  Furthermore, the soil improvement device 1 of the present embodiment loads the soil improvement device body 5 on the loading platform 4 of the trucks 2 and T and transports it to the construction site, leaving only the soil improvement device body 5 at the construction site. Then, after moving the trucks 2, T to a place away from the construction site and performing soil improvement treatment of the soil by the soil improvement device main body 5 alone, the trucks 2, T are returned to the construction site and the soil improvement device main body 5 There is also a method for using the soil conditioner main body 5 alone, in which the load is placed on the loading platform 4 and removed from the construction site.

  As described above, the soil S1 collected from the construction site, which is the collection site, is soil to be improved by improving the soil with the soil improvement device 1 or the soil improvement device body 5 that has moved to the construction site or the vicinity of the construction site. The soil improvement device 1 or the soil improvement device body 5 is moved to the construction site in S1 or the vicinity of the construction site so that the soil can always be modified at the site or in the vicinity of the site, and the soil is transported to a remote soil improvement facility. By eliminating the need to do so, it is possible to suppress the generation of carbon dioxide generated during transportation, and to improve the soil quality in consideration of the global environment.

  Moreover, as a soil quality improvement method of soil consisting of residual soil generated from a construction site, a loading process (step for feeding soil collected from the construction site into the soil loading unit 6 of the soil quality improvement apparatus 1 in the construction site or in the vicinity of the construction site) 1), a crushing step (step 2) for crushing the soil input from the input unit 6 by the crushing unit 7 of the soil improvement device 1, and a improver from the improver input unit 9 of the soil improvement device 1 to the crushed soil The step of introducing the improving agent (step 5), the stirring step of stirring the soil and the improving agent by the mixer 10 of the soil improvement device 1 (step 6), and the soil modified by the mixer 10 the main body of the soil improvement device 5 Since it consists of the modified soil discharge process (step 7) that discharges to the outside, the soil quality improvement device 1 is brought into the construction site where the soil to be modified is generated, and the soil is always at or near the site. It is possible to improve the soil quality and reduce the need to transport the soil to a distant soil improvement facility, thereby suppressing the generation of carbon dioxide generated during transport and improving the soil quality with consideration for the global environment. it can.

  Furthermore, by providing the step of heating the soil (Step 3), the soil put into the soil quality improvement device main body 5 of the soil quality improvement device 1 is heated to accelerate the drying of the soil, thereby the soil and the soil quality improvement agent. The soil improvement effect of the soil can be accelerated by speeding up the reaction.

  Moreover, it is the soil improvement apparatus 1 which provided the soil improvement apparatus main body 5 in the truck 2 which is a self-propelled vehicle, Comprising: The soil improvement apparatus main body 5 and the crushing which crushes the soil with the hopper 6 as an input part into which soil is supplied. Part 7, an improver input part 9 for introducing an improver into the soil, a mixer 10 which is an agitation part for stirring the soil and the improver, and the soil modified by the mixer 10 to the outside of the soil quality improvement device main body 5 And a discharge unit 11 for discharging.

  In this case, it is necessary to carry the soil to a distant soil improvement facility by bringing the soil improvement device 1 into the construction site where the soil to be improved is generated so that the soil can always be improved at or near the site. By eliminating, it is possible to suppress the generation of carbon dioxide generated during transportation and to improve the soil quality in consideration of the global environment.

  Furthermore, since the electric heater device 13 and the hot air device 14 are provided as heating means for heating the soil, the soil introduced into the soil quality improvement device main body 5 by the electric heater device 13 and the hot air device 14 is heated, thereby the soil. The soil improvement effect of the soil can be accelerated by speeding up the drying of the soil, thereby speeding up the reaction between the soil and the soil quality improving agent.

  Furthermore, the generator 12 is provided as a power source for the soil quality improvement device main body 5 so that the power of the truck 2 is stopped during the soil reforming process, thereby generating carbon dioxide generated during the soil reforming process. Soil quality can be improved with consideration for the global environment.

  The present invention is not limited to the above embodiments, and various modifications can be made within the scope of the gist of the present invention. For example, the soil improvement device main body mounted on the loading platform of the truck of the transport vehicle in the above embodiment may be used by being mounted on a bucket of an excavating machine such as a power shovel. It is possible to perform the soil charging process to the part at the same time, and the soil reforming work is efficiently performed. Furthermore, it may be mounted on a self-propelled vehicle such as a construction work vehicle other than a truck or a power shovel. Further, the soil improvement device main body is not limited to the above-described configuration as long as it is a configuration capable of integrally crushing the soil, attaching the soil improvement agent, and stirring the soil and the soil improvement agent.

1 Soil improvement device 5 Soil improvement device body 6 Hopper (soil input part)
7 Crushing unit 8 Conveying means 9 Improving agent charging unit 10 Mixer (stirring unit)
11 soil discharge part 12 generator 13 electric heater device (heating means)
14 Hot air device (heating means)

Claims (1)

A soil charging unit for charging soil, a crushing unit for crushing the soil, a heating means for heating and drying the soil with an electric heater device and an electric hot air device, and an improving agent for charging the soil with the improving agent As a power source for the charging unit, a stirring unit for stirring the soil and the improving agent, a discharging unit for discharging the soil modified by the stirring unit to the outside of the soil improving device main body, and the soil improving device main body Equipped with a generator ,
The electric heater device is detachably provided on an outer shell surface of the soil improvement device main body .

Images