CN114960814A - Method for conveying solid sludge of deep foundation pit - Google Patents
Method for conveying solid sludge of deep foundation pit Download PDFInfo
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- CN114960814A CN114960814A CN202210721827.6A CN202210721827A CN114960814A CN 114960814 A CN114960814 A CN 114960814A CN 202210721827 A CN202210721827 A CN 202210721827A CN 114960814 A CN114960814 A CN 114960814A
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- deep foundation
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/28—Dredgers or soil-shifting machines for special purposes for cleaning watercourses or other ways
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
- E02F3/8808—Stationary installations, e.g. installations using spuds or other stationary supports
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
- E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
- E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
- E02F3/905—Manipulating or supporting suction pipes or ladders; Mechanical supports or floaters therefor; pipe joints for suction pipes
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/28—Dredgers or soil-shifting machines for special purposes for cleaning watercourses or other ways
- E02F5/287—Dredgers or soil-shifting machines for special purposes for cleaning watercourses or other ways with jet nozzles
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F7/00—Equipment for conveying or separating excavated material
- E02F7/10—Pipelines for conveying excavated materials
Abstract
The utility model belongs to the technical field of the technique of construction and specifically relates to a deep basal pit solid form silt conveying method is related to, has built mud pond and cistern in one side bight of deep basal pit, is provided with silt in the outside of deep basal pit and stacks the district, and the road spanes between silt is stacked district and cistern, and deep basal pit adopts segmentation, layering to excavate and handles, including following construction steps: arrange mud pipe and discharge, delivery pipe and discharge, silt delivery pump installation, deep basal pit earthwork excavation, solid form silt softening treatment, flow and mould form silt and carry, for the time limit for a project that improves the shortening foundation ditch construction, this application provides a deep basal pit solid form silt conveying method, can use manpower and materials sparingly to and improve the transport efficiency of silt.
Description
Technical Field
The application relates to the technical field of building construction, in particular to a method for conveying solid sludge of a deep foundation pit.
Background
The foundation pit is a space below the ground excavated for the construction of a building foundation and a basement, and in order to ensure the operation safety of constructors, a foundation pit support is usually arranged on the side wall, the corner and the surrounding environment of the foundation pit so as to support and reinforce the inside of the foundation pit.
At present, in the construction process of a foundation pit, a thick silt layer exists on the upper surface of a foundation pit excavation area, the hardness of the silt layer is low, and a constructor or construction equipment is easy to sink when the silt layer passes through, so that construction is inconvenient.
However, in the actual construction process, the time for the constructors to lay the stone filled roadbed is long, the transfer engineering amount of the whole foundation pit earthwork is also very large, the manpower and material resources are wasted, and the construction period is long.
Disclosure of Invention
In order to improve and shorten the construction period of foundation pit construction, the application provides a method for conveying solid sludge of a deep foundation pit, which can save manpower and material resources and improve the conveying efficiency of the sludge.
The application provides a method for conveying solid sludge in a deep foundation pit, which adopts the following technical scheme:
a method for conveying solid sludge of a deep foundation pit is characterized in that a sludge pond and a reservoir are built at one corner of the deep foundation pit, a sludge stacking area is arranged outside the deep foundation pit, a road spans between the sludge stacking area and the reservoir, and the deep foundation pit adopts subsection and layering for excavation treatment;
the method comprises the following construction steps:
the method comprises the following steps: discharging the sludge discharge pipe: setting a sludge conveying point inside the deep foundation pit, installing a sludge pump on a floating barrel, fixing the floating barrel on the sludge conveying point of the deep foundation pit, communicating one end of a sludge discharge pipe with the deep foundation pit, communicating the other end of the sludge discharge pipe with a sludge pond, assembling an output end of the sludge pump with the sludge discharge pipe, and connecting the sludge pond and the sludge stacking area with the sludge discharge pipe;
step two: discharging by a water supply pipe: the water supply pump is arranged in the reservoir, one end of the water supply pipe is communicated with the reservoir, the other end of the water supply pipe is communicated with the deep foundation pit, and the output end of the water supply pump is communicated with the water supply pipe;
step three: installing a sludge conveying pump: the sludge delivery pump is arranged outside the foundation pit, the input end of the sludge delivery pump is communicated with the sludge discharge pipe, the output end of the sludge delivery pump is provided with a sludge material cylinder, and the sludge material cylinder is communicated with the sludge pond;
step four: excavating the earth of the deep foundation pit: excavating hard earthwork in the excavation area through a back-shovel excavator, and excavating fine sand in the excavation area through a submersible slurry pump;
step five: softening solid sludge: manually pumping water or storing and soaking natural rainwater in the excavated area, and soaking the solid sludge for a period of time to form flowing plastic sludge;
step six: conveying the flowing plastic sludge: the flow-plastic-shaped sludge sequentially passes through the sludge delivery pump, the sludge discharge pipe, the sludge pond and the sludge discharge pipe, and is finally stored in the sludge stacking area.
By adopting the technical scheme, the deep foundation pit is processed by subsection and layered excavation so as to be convenient for constructors to process different soil qualities, the backhoe excavator is matched with the dump truck to excavate hard earthwork with the highest hardness, the submersible slurry pump is used for excavating fine sandy soil, and finally the flowing plastic sludge is transported in a water storage soaking and pumping mode, so that the excavation area can be set, meanwhile, the sludge in the deep foundation pit can be conveniently transported to the sludge stacking area, the whole excavation process of the deep foundation pit does not need excessive intervention of constructors, on one hand, the stone filling roadbed can be avoided, the construction amount of the constructors for excavation and transportation is reduced, manpower and material resources are saved, the construction period of the deep foundation pit is effectively shortened, on the other hand, additional load on a steel structure column installed in the deep foundation pit when the equipment walks in the deep foundation pit can be reduced, namely, the disturbance on the steel structure column is reduced, and moreover, the condition that equipment sinks due to unstable foundation in the construction process is reduced, and the operation safety of constructors in the excavation process of the deep foundation pit is guaranteed.
Preferably, the bottoms of the mud pit and the water storage tank are made of 100-thick C20 concrete, and the wall enclosing walls of the mud pit and the water storage tank are made of 240-thick cement brick M10 cement sand.
Through adopting above-mentioned technical scheme, mud pit, cistern are firmly installed, make mud pit, cistern have good structural strength, and difficult the emergence is collapsed, are favorable to prolonging the life of mud pit, cistern to a certain extent.
Preferably, the inside wall in mud pit, the inside wall in cistern has painted cement mortar layer and waterproof layer in proper order.
Through adopting above-mentioned technical scheme, the inside wall through inside wall at mud pit, cistern has painted cement mortar layer and waterproof layer in proper order, makes mud pit, cistern get the inner wall and have good waterproof nature and weatherability, is favorable to prolonging the life of mud pit, cistern.
Preferably, in the step of processing the sludge discharge pipe in the first step, a lubricant is additionally arranged on the sludge discharge pipe and the pipe wall of the sludge discharge pipe.
By adopting the technical scheme, the lubricating agent is additionally arranged at the pipe wall of the sludge discharge pipe and the sludge discharge pipe, so that the friction force between the flow plastic sludge and the wall of the sludge discharge pipe or between the flow plastic sludge and the wall of the sludge discharge pipe can be reduced, the flowability of the flow plastic sludge is improved, and the effect of improving the pumping continuity is achieved.
Preferably, a plurality of mounting grooves have been seted up at the middle part on road, arrange the silt pipe and correspond and arrange in the mounting groove, arrange the top of silt pipe and install the pipeline locating rack, the pipeline locating rack is used for a plurality of arrange the silt pipe interval and separate.
Through adopting above-mentioned technical scheme, seting up of mounting groove makes row's silt pipe can place steadily, plays the effect of location to row's silt pipe, and the distance between two adjacent row's silt pipes can be adjusted in the setting of pipeline locating rack, plays the effect of adjusting row's silt intertube straight degree, can improve to a certain extent and flow the conveying efficiency of moulding form silt in row's silt pipe.
Preferably, the position department that the lateral wall of deep basal pit is close to silt delivery point has been set for towards the stone mechanism, it aims at to dash the stone mechanism the bottom of deep basal pit, and to the accumulation be in the stone of silt delivery point bottom strikes, the input of mud pipe with the lateral wall top of deep basal pit communicates with each other.
Through adopting above-mentioned technical scheme, constructor utilizes to dash stone mechanism and assaults the stone of accumulation in silt delivery point bottom, can collect the stone fast, conveniently, erodes the stone to predetermineeing the position to the stone to the constructor builds the construction steps that the concrete was strutted to regional juncture, is favorable to improving the utilization ratio of resource, reduces engineering cost, is favorable to reducing the engineering volume of material transportation, short construction period.
Preferably, the sludge conveying points are provided with a plurality of sludge pipes, the number of the sludge pipes and the number of the water supply pipes correspond to the number of the sludge conveying points, and the sludge conveying points are set in the excavation area of the deep foundation pit.
Through adopting above-mentioned technical scheme, carry the point and set up silt delivery point in the excavation region through setting up a plurality of silts, can take out the water in the cistern to the excavation region in fast, shortened the time of drawing water, improved the work efficiency that the deep basal pit dredges.
Preferably, in the processing step that the form silt of moulding that flows of step six was carried, accomplish one section excavation back of deep basal pit, it is right deep basal pit backfills to terrace elevation level and tamps backfill soil property.
Through adopting above-mentioned technical scheme, backfill to terrace elevation position and tamp the backfill soil property through the deep basal pit after accomplishing the excavation, can reach the effect of developing the interior construction process of deep basal pit simultaneously on the one hand, on the other hand can in time consolidate the structure in the deep basal pit to the structural stability of reinforcing deep basal pit improves constructor's operation factor of safety.
Preferably, after one section of excavation of the deep foundation pit is completed, the sludge conveying points are transferred to the periphery of the next section of area to be excavated, and the distance between every two adjacent sludge conveying points is 5 m.
By adopting the technical scheme, the sludge conveying point is transferred along with the development of engineering, so that a sludge pump arranged on the sludge conveying point keeps a close distance with an excavation area all the time, a high-pressure state is kept in a sludge discharge pipe all the time, the conveying efficiency of the flow plastic sludge is improved, and the conveying continuity is improved.
Preferably, a circulating water pipe with a pump is communicated between the mud pit and the water reservoir, and the clarified water in the mud pit is discharged into the water reservoir through the circulating water pipe with the pump.
Through adopting above-mentioned technical scheme, under the effect of taking pump circulating pipe, can easily transport the water after the clarification in the mud pond back to the cistern, the water resource can cyclic utilization.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the whole excavation process of the deep foundation pit does not need excessive intervention of constructors, on one hand, the stone-filled roadbed laying can be avoided, the construction amount of constructors for excavation and transportation is reduced, manpower and material resources are saved, the construction period of the deep foundation pit is effectively shortened, on the other hand, the additional load generated on a steel structure column installed in the deep foundation pit when equipment travels in the deep foundation pit can be reduced, namely, the disturbance to the steel structure column is reduced, in addition, the condition that the equipment sinks due to unstable foundation in the construction process is reduced, and the operation safety of the constructors in the excavation process of the deep foundation pit is favorably ensured;
2. the installation groove is formed, so that the silt discharging pipes can be stably placed, the silt discharging pipes are positioned, the distance between every two adjacent silt discharging pipes can be adjusted through the pipeline positioning frame, the straightness between the silt discharging pipes can be adjusted, and the conveying efficiency of the fluid plastic silt in the silt discharging pipes can be improved to a certain degree;
3. constructor utilizes to dash stone mechanism and assaults the stone that accumulates in silt delivery point bottom, can collect the stone fast, conveniently, erode the stone to predetermineeing the position to the stone to the constructor builds the construction step that the concrete was strutted to regional juncture, is favorable to improving the utilization ratio of resource, reduces engineering cost, is favorable to reducing the engineering volume of material transportation, short construction period.
Drawings
Fig. 1 is a schematic structural diagram of a deep foundation pit in an embodiment of the present application.
Fig. 2 is a rough view of the excavated area in the embodiment of the present application.
Fig. 3 is a construction flowchart according to an embodiment of the present application.
FIG. 4 is a schematic view showing the installation of the sludge discharge pipe in the embodiment of the present application.
Description of reference numerals: 1. a mud pit; 2. a reservoir; 3. a sludge stacking area; 4. a road; 41. a mounting cavity; 42. mounting grooves; 43. a pipe positioning frame; 5. a deep foundation pit; 51. a sludge conveying point; 52. excavating an area; 53. an area to be excavated; 54. supporting by concrete; 61. a sludge discharge pipe; 611. a slurry pump; 62. a sludge discharge pipe; 63. a water supply pipe; 64. a water supply pump; 65. a sludge transfer pump; 651. a sludge material tank; 66. a circulating water pipe with a pump.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
The embodiment of the application discloses a method for conveying solid sludge of a deep foundation pit.
Referring to fig. 1 and 2, the deep foundation pit 5 is excavated by segmentation and layering, and is divided into an excavation area 52 and an area to be excavated 53 along the transverse direction of the deep foundation pit 5, the deep foundation pit 5 can be divided into three layers from top to bottom, the first layer is hard earthwork, the second layer is fine silt, the third layer is solid silt, wherein the thickness of the solid silt is 6m, the thickness of the fine silt is 1m, and the fine silt is unevenly distributed in the whole deep foundation pit 5.
At one side bight of deep basal pit 5 construction there is mud pit 1, and cistern 2, be provided with silt in deep basal pit 5's outside and stack district 3, road 4 spanes between silt is stacked district 3 and cistern 2, wherein, mud pit 1, the bottom of the pool of cistern 2 all adopts 100 thick C20 concrete, pool wall enclosure wall between them all adopts 240 thick cement brick M10 cement sand, and, the inside wall of mud pit 1, the inside wall of cistern 2 has all been paintd the cement mortar layer, wait for cement mortar layer maintenance to design strength after, paint the waterproof layer in the outside on cement mortar layer, make mud pit 1, cistern 2 has good structural strength and water-proof effects, and then can improve the weatherability of pond and cistern 2, and service life is prolonged.
The method for conveying the solid sludge in the deep foundation pit 5 comprises the following construction steps:
the method comprises the following steps: the sludge discharge pipe 61 discharges: a sludge conveying point 51 is set in the deep foundation pit 5, a sludge pump 611 is installed on a buoy, the buoy is fixed on the sludge conveying point 51 of the deep foundation pit 5, one end of a sludge discharge pipe 61 is communicated with the deep foundation pit 5, the other end of the sludge discharge pipe is communicated with a sludge pool 1, the output end of the sludge pump 611 is assembled with the sludge discharge pipe 61, and a sludge discharge pipe 62 is connected between the sludge pool 1 and a sludge stacking area 3.
Specifically, referring to fig. 2 and 3, there are four sludge conveying points 51, two sludge conveying points 51 in the horizontal direction are on the same horizontal line, two sludge conveying points 51 in the longitudinal direction are on the same extension line, the distance between two adjacent sludge conveying points 51 is 5m, and the four sludge conveying points 51 are all set in the excavated area 52 of the deep foundation pit 5 to facilitate the installation of the pontoon and the mud pump 611.
In the embodiment of the present application, the mud pump 611 is fixed on a buoy, a constructor hangs the buoy carrying the mud pump 611 into the mud conveying point 51, and the input end of the mud pipe 61 is installed at the top of the side wall of the deep foundation pit 5, so that the mud pipe 61 is communicated with the deep foundation pit 5, that is, during construction, the input end of the mud pipe 61 is directly placed in the excavation region 52 for self-suction.
The mud discharging pipe 61 is laid and arranged along the direction of the mud pit 1, the length dimension of the mud discharging pipe 61 is larger than the distance from the deep foundation pit 5 to the mud pit 1, the mud discharging pipe 61 is properly bent in the laying and arranging process, when the mechanical movement or the sludge conveying point 51 moves, the length of the mud discharging pipe 61 in construction is ensured, and the mud pit 1 at the output end of the mud discharging pipe 61 is communicated.
More specifically, one end of the silt discharging pipe 62 is communicated with the mud pit 1, the other end of the silt discharging pipe 62 is communicated with the silt stacking area 3, the middle of the silt discharging pipe 62 stretches across the road 4, referring to fig. 2 and 4, the middle of the road 4 is provided with an installation cavity 41, the bottom of the road 4 close to the installation cavity 41 is provided with a plurality of installation grooves 42, the silt discharging pipe 62 is consistent with the installation grooves 42 in number, the installation grooves 42 are arc-shaped grooves, constructors correspondingly and stably place the silt discharging pipe 62 in the installation grooves 42, a pipeline positioning frame 43 is arranged in the installation cavity 41, the pipeline positioning frame 43 is made of a 20-thick steel plate, the pipeline positioning frame 43 is fixedly inserted between the silt discharging pipes 62, the silt discharging pipes 62 can be spaced, and the effect of positioning and adjusting the straightness of the silt discharging pipe 62 is achieved.
In the embodiment of the present application, the sludge discharge pipe 62 is a pump-equipped sludge discharge pipe 62, and the sludge discharge pipe 61 and the sludge discharge pipe 62 are both PE pipes, so that the sludge discharge pipe 61 and the sludge discharge pipe 62 have good weather resistance, and the pipe walls of the sludge discharge pipe 61 and the sludge discharge pipe 62 are provided with lubricant additionally to reduce the resistance of pumping sludge in the sludge discharge pipe 61 or the sludge discharge pipe 62, and improve the continuity of sludge pumping.
Step two: the water supply pipe 63 discharges: the water supply pump 64 is installed in the reservoir 2, one end of the water supply pipe 63 is connected to the reservoir 2, the other end is connected to the deep foundation pit 5, and the output end of the water supply pump 64 is connected to the water supply pipe 63.
Referring to fig. 2 and 3, the number of the sludge discharging pipes 61 and the number of the water supplying pipes 63 correspond to the number of the sludge transporting points 51, and a constructor can control the same sludge transporting point 51, and simultaneously perform sludge impact and sludge pumping according to actual conditions to improve the sludge pumping effect, or can control the sludge pumping time of different sludge transporting points 51 to improve the flexibility in the sludge pumping process.
Constructors pump water from a ditch near the deep foundation pit 5 to enter the reservoir 2 as draft water of a high-pressure pump for construction, a circulating water pipe 66 with a pump is communicated between the mud pit 1 and the reservoir 2, and clarified water in the mud pit 1 is discharged into the reservoir 2 through the circulating water pipe 66 with the pump to be used as flushing circulating water, so that water resources are saved.
Step three: the sludge transfer pump 65 is installed: the sludge delivery pump 65 is arranged outside the foundation pit, the input end of the sludge delivery pump 65 is communicated with the sludge discharge pipe 61, the output end of the sludge delivery pump 65 is provided with a sludge material cylinder 651, and the sludge material cylinder 651 is communicated with the sludge pond 1.
In this application embodiment, the sludge transfer pump 65 is a double-shaft pre-pressing screw conveyor, and a lubricant is also added to the transfer pipeline of the sludge transfer pump 65, so as to reduce the resistance of sludge pumping and improve the continuity of sludge pumping.
Step four: excavating earth in the deep foundation pit 5: hard earthwork excavation is performed on the excavation region 52 by a backhoe excavator, and fine sand excavation is performed on the excavation region 52 by a submersible slurry pump.
Referring to fig. 2 and 3, hard earthwork and fine sand excavated from an excavation area 52 are temporarily placed in a belt excavation area 52, soil is transferred to a dump truck by a backhoe, the dump truck is driven by a constructor, and finally the soil is transferred to a sludge stacking area 3, and the hard earthwork and the fine sand are impacted by a high-pressure water gun during excavation by the backhoe or the submersible slurry pump, so that the humidity of the hard earthwork and the fine sand can be increased, the hardness of the hard earthwork and the fine sand can be reduced, and the convenience and the efficiency of excavation can be improved.
Step five: softening solid sludge: the excavated area 52 is subjected to manual pumping or natural rainwater storage soaking.
Specifically, referring to fig. 1 and 2, a constructor starts a water supply pump 64 to transport water in the reservoir 2 to the excavation area 52 to pump water and soak the water, wherein solid sludge forms flow plastic sludge after soaking for a period of time, the solid sludge soaking time is a conversion time of the solid sludge forming the flow plastic sludge in the practical application process, and the flow plastic sludge is soft soil with certain fluidity.
Step six: conveying the flowing plastic sludge: the flow plastic sludge passes through the sludge delivery pump 65, the sludge discharge pipe 61, the mud pit 1 and the sludge discharge pipe 62 in sequence and is finally stored in the sludge piling zone 3.
Specifically, referring to fig. 1 and 2, a constructor starts a water supply pump 64, a slurry pump 611 and a sludge delivery pump 65, wherein the water supply pump 64 is used as a power source for delivering a water source to the plastic-flowing sludge in the excavation area 52 to enhance the fluidity of the plastic-flowing sludge, the sludge delivery pump 65 presses the plastic-flowing sludge into a sludge material cylinder 651 to enable the sludge material cylinder 651 to be in a suction state, so as to ensure that the sludge material cylinder 651 reaches a high degree of filling, the slurry pump 611 delivers the plastic-flowing sludge in the sludge material cylinder 651 into the sludge tank 1, and the sludge discharge pipe 62 delivers the plastic-flowing sludge in the sludge tank 1 to the sludge stacking area 3 to complete the whole sludge delivery process.
In the present embodiment, during the sludge pumping process of the sludge delivery pump 65, only the less dense fluid plastic sludge can be pressed into the sludge material cylinder 651, or the less bulky stone can be pressed into the sludge material cylinder 651, while the bulky stone is accumulated at the bottom of the deep foundation pit 5 near the sludge delivery point 51 by the pumping force.
The position department that the lateral wall of deep basal pit 5 is close to silt and carries point 51 is set for towards the stone mechanism, and towards the bottom of stone mechanism alignment deep basal pit 5 and strike the stone that accumulates in silt transport point 51 bottom, towards the stone mechanism for towards stone high pressure squirt.
After accomplishing one section excavation of deep basal pit 5, constructor backfills deep basal pit 5 to terrace elevation level and tamp and backfill the soil property, and at the in-process of backfilling, the stone mechanism that dashes erodees the stone to excavation region 52 and treat the position that excavation region 53 borders, specifically, the angle that constructor adjusted towards stone mechanism and stone is 45, makes the light adjusting position of stone under the effect of high velocity of water flow.
In the embodiment of the present application, the deep foundation pit 5 is excavated from the corner portion to the middle, and after one section of the deep foundation pit 5 is excavated, the sludge conveying points 51 are transferred to the periphery of the next section of the area 53 to be excavated.
When constructors build the concrete supports 54 at the area junctions, the concrete supports 54 of the deep foundation pit 5 are built from the corners to the middle, so that the structural stability of the deep foundation pit 5 is guaranteed, the collapse phenomenon is reduced, stones, hard earthworks and fine silt excavated from the excavation area 52 can be used as raw materials built by the concrete supports 54, the utilization rate of resources is improved, the engineering quantity of material transportation is reduced, and the construction period is shortened.
Referring to fig. 1 and 2, the concrete supports 54 at the corners of the deep foundation pit 5 are obliquely arranged, and when the deep foundation pit 5 is excavated in the middle area, stones are collected in the middle of the deep foundation pit 5 by a stone-punching mechanism, so that the subsequent construction process can be conveniently carried out.
After the construction of each excavation area 52 is completed, the construction steps from the first step to the sixth step are repeated, and the steps are sequentially advanced.
The above are all preferred embodiments of the present application, and the present embodiment is only explained for the present application, and the protection scope of the present application is not limited by this, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. A method for conveying solid sludge of a deep foundation pit is characterized in that a sludge pond (1) and a reservoir (2) are built at one side corner of the deep foundation pit (5), a sludge stacking area (3) is arranged outside the deep foundation pit (5), a road (4) stretches across between the sludge stacking area (3) and the reservoir (2), and the deep foundation pit (5) is excavated by segmentation and layering;
the method comprises the following construction steps:
the method comprises the following steps: discharging by a sludge discharge pipe (61): a sludge conveying point (51) is set in the deep foundation pit (5), a sludge pump (611) is installed on a buoy, the buoy is fixed on the sludge conveying point (51) of the deep foundation pit (5), one end of a sludge discharge pipe (61) is communicated with the deep foundation pit (5), the other end of the sludge discharge pipe is communicated with a sludge pond (1), the output end of the sludge pump (611) is assembled with the sludge discharge pipe (61), and a sludge discharge pipe (62) is connected between the sludge pond (1) and the sludge piling zone (3);
step two: a water supply pipe (63) discharges: a water supply pump (64) is arranged in the water storage tank (2), one end of a water supply pipe (63) is communicated with the water storage tank (2), the other end of the water supply pipe is communicated with the deep foundation pit (5), and the output end of the water supply pump (64) is communicated with the water supply pipe (63);
step three: the sludge conveying pump (65) is installed: a sludge delivery pump (65) is arranged outside the foundation pit, the input end of the sludge delivery pump (65) is communicated with the sludge discharge pipe (61), the output end of the sludge delivery pump (65) is provided with a sludge material cylinder (651), and the sludge material cylinder (651) is communicated with the mud pit (1);
step four: excavating earth of the deep foundation pit (5): hard earthwork excavation is carried out on the excavation area (52) through a back-shoveling type excavator, and fine sand is excavated on the excavation area (52) through a submersible slurry pump;
step five: softening solid sludge: manually pumping water or storing and soaking natural rainwater in the excavated area (52), and soaking the solid sludge for a period of time to form plastic-flowing sludge;
step six: conveying the flowing plastic sludge: the flow plastic sludge sequentially passes through the sludge conveying pump (65), the sludge discharge pipe (61), the mud pit (1) and the sludge discharge pipe (62) and is finally stored in the sludge stacking area (3).
2. The method for conveying the solid sludge in the deep foundation pit according to claim 1, wherein the bottoms of the mud pit (1) and the water storage pool (2) are made of 100-thick C20 concrete, and the wall enclosing walls of the mud pit (1) and the water storage pool (2) are made of 240-thick cement brick M10 cement sand.
3. The deep foundation pit solid sludge conveying method according to claim 1, wherein a cement mortar layer and a waterproof layer are sequentially coated on the inner side wall of the mud pit (1) and the inner side wall of the reservoir (2).
4. The method for conveying the solid sludge in the deep foundation pit according to claim 1, wherein in the step of discharging the sludge discharge pipe (61) in the step one, a lubricant is added on the pipe walls of the sludge discharge pipe (61) and the sludge discharge pipe (62).
5. The method for conveying the solid sludge in the deep foundation pit according to claim 1, wherein a plurality of installation grooves (42) are formed in the middle of a road (4), the sludge discharge pipes (62) are correspondingly arranged in the installation grooves (42), a pipeline positioning frame (43) is installed at the top of each sludge discharge pipe (62), and the pipeline positioning frame (43) is used for spacing the sludge discharge pipes (62).
6. The deep foundation pit solid sludge conveying method according to claim 1, wherein a stone punching mechanism is arranged on the side wall of the deep foundation pit (5) close to the sludge conveying point (51), the stone punching mechanism is aligned with the bottom of the deep foundation pit (5) and impacts stones accumulated at the bottom of the sludge conveying point (51), and the input end of the sludge discharge pipe (61) is communicated with the top of the side wall of the deep foundation pit (5).
7. The deep foundation pit solid sludge conveying method according to claim 6, wherein the number of the sludge conveying points (51) is several, the number of the sludge discharge pipes (61) and the number of the water supply pipes (63) correspond to the number of the sludge conveying points (51), and the number of the sludge conveying points (51) is set in an excavation area (52) of the deep foundation pit (5).
8. The method for conveying the solid sludge in the deep foundation pit according to claim 1, wherein in the step six, after one section of excavation of the deep foundation pit (5) is completed, the deep foundation pit (5) is backfilled to a level of a terrace and backfilled soil is tamped.
9. The method for transporting the solid sludge in the deep foundation pit as claimed in claim 6, wherein after one section of the deep foundation pit (5) is excavated, the sludge transporting points (51) are transferred to the periphery of the next section of the area (53) to be excavated, and the distance between two adjacent sludge transporting points (51) is 5 m.
10. The deep foundation pit solid sludge conveying method according to claim 1, wherein a pump circulating water pipe (66) is communicated between the mud pit (1) and the water storage tank (2), and the clarified water of the mud pit (1) is discharged into the water storage tank (2) through the pump circulating water pipe (66).
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