A soil-water separation device for earth pressure balance shield tunnel spoil pits

Abstract

This application relates to a water-soil separation device for earth pressure balance shield tunneling spoil heaps. The device includes a support frame, a water collection frame, and a soil unloading frame. The support frame includes a support plate and a placement plate. The support plate is vertically positioned, with its top surface fixedly connected to the bottom surface of the placement plate. The bottom surface of the support plate abuts against the inner bottom wall of the heap. A first filter hole is provided on the placement plate. The water collection frame is located below the placement plate. The soil unloading frame is positioned on the top surface of the placement plate and includes a peripheral plate and an inclined plate. The peripheral plate is positioned on the top surface of the placement plate, and the peripheral wall of the inclined plate is fixedly connected to the inner peripheral wall of the peripheral plate. A second filter hole is provided on the inclined plate. A discharge notch is provided on the lowest side of the peripheral plate in the width direction of the inclined plate. This technical solution separates the spoil into water and soil, reducing the moisture content of the spoil, maintaining soil aeration and permeability, and reducing soil erosion.

Description

Technical Field

[0001] This application relates to the field of building engineering, and more particularly to a water and soil separation device for earth pressure balance shield tunnel slag pits. Background Technology

[0002] Subway excavation often uses the earth pressure balance shield tunneling method. The traditional way to deal with the excavated soil generated by the earth pressure balance shield tunneling is to transport the excavated soil to a designated excavated soil disposal site for open-air storage or to landfill it in the project backfill area.

[0003] However, the slag produced by earth pressure balance shield tunneling has small particles and high moisture content. If it is directly piled up without treatment, the moisture will change the soil pore structure, reduce soil aeration and permeability, affect plant growth, and may cause soil erosion problems. Therefore, the slag needs to be dehydrated before it is landfilled. Utility Model Content

[0004] To address the aforementioned issues, this application provides a soil-water separation device for earth pressure balance shield tunnel spoil pits.

[0005] The water-soil separation device for earth pressure balance shield tunnel slag pit provided in this application includes a support frame, a water collection frame and a soil unloading frame. The support frame includes a support plate and a placement plate. The support plate is set vertically and the placement plate is set horizontally. The support plate is set at both ends of the placement plate along its length. The top surface of the support plate is fixedly connected to the bottom surface of the placement plate. The bottom surface of the support plate abuts against the inner bottom wall of the pit. The placement plate has a first filter hole that allows liquid to pass through but prevents slag from passing through. The water collection frame is located below the placement plate; The soil unloading frame is disposed on the top surface of the placement plate. The soil unloading frame includes a peripheral side plate and an inclined plate. The peripheral side plate is fixedly disposed on the top surface of the placement plate. The peripheral side wall of the inclined plate is fixedly connected to the inner peripheral wall of the peripheral side plate. The inclined plate has a second filter hole for liquid to pass through but for soil to not pass through. One side of the inclined plate in the width direction is the lowest side. The peripheral side plate on one side of the inclined plate in the width direction is provided with a unloading notch. A baffle plate is installed at the unloading notch by a lifting assembly. When the baffle plate rises, the soil falls into the pool along the inclined plate.

[0006] By adopting the above technical solution, after fixing the soil-water separation device in the pool, the excavator pours the slag that needs to be dewatered into the soil unloading frame. Under the action of gravity, water and other liquids fall down from the second filter hole of the inclined plate, and then enter the water collection frame through the first filter hole of the placement plate, driving the baffle plate to rise. The dewatered slag falls down along the inclined plate into the pool, realizing soil-water separation, reducing the moisture content of the slag, maintaining soil aeration and permeability, reducing the impact on plant growth, and reducing soil erosion problems.

[0007] Preferably, the first filter holes are arranged in multiple rows at equal intervals along the width direction of the placement plate, and the first filter holes in each row are arranged in multiple rows at equal intervals along the length direction of the placement plate.

[0008] Preferably, the second filter holes are arranged in multiple rows at equal intervals along the width direction of the inclined plate, and each row of the second filter holes is arranged in multiple rows at equal intervals along the length direction of the inclined plate.

[0009] By adopting the above technical solutions, the filtration range of liquids can be expanded and the filtration efficiency can be improved.

[0010] Preferably, the top surface of the baffle plate is provided with a lifting plate, the two ends of the lifting plate extending out of the two ends of the soil unloading frame in the length direction, the lifting assembly includes a lifting cylinder, the lifting cylinder is fixedly installed on the outer wall at both ends of the perimeter plate in the length direction, and the piston rod of the lifting cylinder is fixedly connected to both ends of the lifting plate in the length direction.

[0011] By adopting the above technical solution, when the piston rod of the lifting cylinder extends, it drives the lifting plate to rise, thereby driving the baffle plate to rise; when the piston rod of the lifting cylinder retracts, it drives the lifting plate to fall, thereby driving the baffle plate to fall.

[0012] Preferably, the bottom surface of the baffle plate abuts against the top surface of the inclined plate, the top surface of the baffle plate is flush with the top surface of the peripheral side plate, and the side of the baffle plate closest to the highest side of the inclined plate abuts against the side of the peripheral side plate with the unloading notch. A limiting plate is fixedly connected to the side of the baffle away from the highest side of the inclined plate. The bottom surface of the limiting plate abuts against the top surface of the inclined plate, and the top surface of the limiting plate is flush with the top surface of the baffle. A guide rod is vertically arranged on the side of the limiting plate near the peripheral plate, and the top surface of the guide rod is flush with the top surface of the peripheral plate. A guide groove for the guide rod to move up and down is opened on the side of the peripheral plate near the limiting plate. The side of the placement plate near the baffle is located on the side of the lowest side of the inclined plate near the highest side of the inclined plate.

[0013] By adopting the above technical solution, the stability of the baffle plate movement is improved.

[0014] Preferably, auxiliary plates are fixedly provided at both ends of the top surface of the placement plate along the length direction. The auxiliary plates are vertically arranged, and a positioning plate is provided on the top surface of each auxiliary plate. The positioning plates are horizontally arranged, and the two positioning plates extend toward the side that is far away from each other. The bottom surface of the positioning plate abuts against the top surface of the pool. Each of the positioning plates has a fixing plate at both ends along its length. The fixing plate is Z-shaped. The bottom surface of the upper plate of the fixing plate abuts against the top surface of the positioning plate. The upper plate is fixed to the positioning plate by a first screw. The bottom surface of the lower plate of the fixing plate abuts against the top surface of the pool body. The lower plate is fixed to the pool body by a second screw.

[0015] By adopting the above technical solution, the shaking and displacement of the soil-water separation device when the slag is poured into the soil unloading frame are reduced, and the stability of the soil-water separation device in the pool is improved.

[0016] Preferably, the support plate is trapezoidal.

[0017] By adopting the above technical solutions, the stability of the support plate is improved.

[0018] Preferably, the sidewalls at both ends of the water collection frame along its length are fixedly connected to the support plate.

[0019] By adopting the above technical solution, the water and soil separation device can be moved out of the pool along with the water collection frame, which is convenient to operate.

[0020] Preferably, a drain hole is provided at one end of the water collection frame in the width direction, the drain pipe is located near the top of the water collection frame, the drain pipe is inserted into the drain hole, one end of the drain pipe extends into the pool body and extends to the bottom of the pool body, and the other end of the drain pipe is connected to a water pump, the water pump discharges the water in the water collection frame out of the water collection frame.

[0021] By adopting the above technical solution, the water in the water collection box is first discharged by a water pump and a drainage pipe, and then the water-soil separation device is removed.

[0022] In summary, this application includes the following beneficial technical effects: After the soil-water separation device is fixed in the pool, the excavator pours the slag that needs to be dewatered into the soil unloading frame. Under the action of gravity, water and other liquids fall down from the second filter hole of the inclined plate, and then enter the water collection frame through the first filter hole of the placement plate, driving the baffle plate to rise. The dewatered slag falls down along the inclined plate into the pool, realizing soil-water separation, reducing the moisture content of the slag, maintaining soil aeration and permeability, reducing the impact on plant growth, and reducing soil erosion problems. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the water and soil separation device located inside the pool, as shown in the embodiments of this application.

[0024] Figure 2 This is a schematic diagram of the overall structure of the soil and water separation device used in the embodiments of this application.

[0025] Figure 3 This is a cross-sectional structural diagram of the inclined plate, baffle plate, limiting plate and lifting plate used in the embodiments of this application.

[0026] Figure 4 This is a structural schematic diagram used to illustrate the guide rod and guide groove in the embodiments of this application.

[0027] Explanation of reference numerals in the attached drawings: 1. Support frame; 11. Support plate; 12. Placement plate; 121. First filter hole; 2. Water collection frame; 21. Drainage hole; 22. Drainage pipe; 3. Soil unloading frame; 31. Peripheral plate; 311. Guide groove; 32. Inclined plate; 321. Second filter hole; 33. Unloading notch; 4. Baffle plate; 41. Lifting plate; 5. Lifting cylinder; 6. Limiting plate; 61. Guide rod; 7. Auxiliary plate; 71. Positioning plate; 8. Fixing plate; 81. Upper plate; 811. First screw; 82. Lower plate; 821. Second screw; 9. Pool body. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0029] This application discloses a water-soil separation device for earth pressure balance shield tunnel slag pits.

[0030] Reference Figure 1-4 The water-soil separation device for the earth pressure balance shield tunneling spoil pit includes a support frame 1, a water collection frame 2, and a soil unloading frame 3. The support frame 1 includes a support plate 11 and a placement plate 12. The support plate 11 is vertically arranged, and the placement plate 12 is horizontally arranged. The support plate 11 is located at both ends of the placement plate 12 along its length. The top surface of the support plate 11 is fixedly connected to the bottom surface of the placement plate 12, and the bottom surface of the support plate 11 abuts against the inner bottom wall of the pit body 9. The support plate 11 is trapezoidal to improve its stability.

[0031] The water collection frame 2 is located below the placement plate 12, and the side walls at both ends of the water collection frame 2 along its length are fixedly connected to the support plate 11. When the water-soil separation device is moved out of the pool body 9, the water collection frame 2 is also moved out together, making the operation convenient.

[0032] A drain hole 21 is provided at one end of the water collection frame 2 in the width direction. A drain pipe 22 is located near the top of the water collection frame 2. The drain pipe 22 is inserted into the drain hole 21. One end of the drain pipe 22 extends into the pool body 9 and extends to the bottom of the pool body 9. The other end of the drain pipe 22 is connected to a water pump. The water pump discharges the water in the water collection frame 2 out of the water collection frame 2. By first draining the water in the water collection frame 2 through the water pump and the drain pipe 22, the water-soil separation device can be removed to prevent the water in the water collection frame 2 from tipping into the pool body 9 during the handling and disassembly process. The drain pipe 22 is fixed to the inner wall of the water collection frame 2 and the inner wall of the frame body with tape.

[0033] The placement plate 12 has first filter holes 121 that allow liquid to pass through but prevent soil from passing through. The first filter holes 121 are arranged in multiple rows at equal intervals along the width direction of the placement plate 12, and multiple first filter holes 121 in each row are arranged at equal intervals along the length direction of the placement plate 12, thereby expanding the filtration range of the liquid and improving the filtration efficiency.

[0034] The soil unloading frame 3 is set on the top surface of the placement plate 12. The soil unloading frame 3 includes a peripheral side plate 31 and an inclined plate 32. The peripheral side plate 31 is fixedly set on the top surface of the placement plate 12. The peripheral side wall of the inclined plate 32 is fixedly connected to the inner peripheral wall of the peripheral side plate 31. The inclined plate 32 is provided with a second filter hole 321 that allows liquid to pass through but prevents soil from passing through. The second filter hole 321 is arranged in multiple rows at equal intervals along the width direction of the inclined plate 32, and each row of the second filter hole 321 is arranged in multiple rows at equal intervals along the length direction of the inclined plate 32, thereby expanding the filtration range of the liquid and improving the filtration efficiency.

[0035] One side of the inclined plate 32 in the width direction is the lowest side. The peripheral plate 31 on one side of the inclined plate 32 in the width direction is provided with a discharge gap 33. A baffle plate 4 is installed at the discharge gap 33 by a lifting component. When the baffle plate 4 rises, the slag falls into the pool 9 along the inclined plate 32. During this process, the workers next to the pool 9 of the slag pool sort and pile the fallen dewatered slag away from the water and soil separation device.

[0036] A lifting plate 41 is provided on the top surface of the baffle plate 4. The two ends of the lifting plate 41 extend beyond the two ends of the soil unloading frame 3 along its length. The lifting assembly includes a lifting cylinder 5, which is fixedly installed on the outer wall of the side plate 31 at both ends along its length. The piston rod of the lifting cylinder 5 is fixedly connected to the two ends of the lifting plate 41 along its length. When the piston rod of the lifting cylinder 5 extends, it drives the lifting plate 41 to rise, thereby driving the baffle plate 4 to rise. When the piston rod of the lifting cylinder 5 retracts, it drives the lifting plate 41 to fall, thereby driving the baffle plate 4 to fall.

[0037] The bottom surface of the baffle plate 4 abuts against the top surface of the inclined plate 32, the top surface of the baffle plate 4 is flush with the top surface of the peripheral side plate 31, and the side of the baffle plate 4 closest to the highest side of the inclined plate 32 abuts against the side of the peripheral side plate 31 with the unloading notch 33.

[0038] A limiting plate 6 is fixedly connected to the side of the baffle plate 4 away from the highest side of the inclined plate 32. The bottom surface of the limiting plate 6 abuts against the top surface of the inclined plate 32, and the top surface of the limiting plate 6 is flush with the top surface of the baffle plate 4. A guide rod 61 is vertically provided on the side of the limiting plate 6 near the peripheral side plate 31. The top surface of the guide rod 61 is flush with the top surface of the peripheral side plate 31. A guide groove 311 for the guide rod 61 to rise and fall is provided on the side of the peripheral side plate 31 near the limiting plate 6. The side of the placement plate 12 near the baffle plate 4 is located on the side of the lowest side of the inclined plate 32 near the highest side of the inclined plate 32, which improves the stability of the movement of the baffle plate 4.

[0039] Auxiliary plates 7 are fixedly installed at both ends of the top surface of the placement plate 12 along the length direction. The auxiliary plates 7 are vertically installed. Each auxiliary plate 7 has a positioning plate 71 on its top surface. The positioning plates 71 are horizontally installed. The two positioning plates 71 extend toward the side that is far away from each other. The bottom surface of the positioning plate 71 abuts against the top surface of the pool body 9.

[0040] Each positioning plate 71 has a fixing plate 8 at both ends along its length. The fixing plate 8 is Z-shaped. The bottom surface of the upper plate 81 of the fixing plate 8 abuts against the top surface of the positioning plate 71. The upper plate 81 is fixed to the positioning plate 71 by a first screw 811. The bottom surface of the lower plate 82 of the fixing plate 8 abuts against the top surface of the pool body 9. The lower plate 82 is fixed to the pool body 9 by a second screw 821. The fixing plates 8 fix the soil-water separation device to the top wall of the slag pool 9, reducing the shaking and displacement of the soil-water separation device when slag is poured into the soil unloading frame 3, and improving the stability of the soil-water separation device within the pool body 9.

[0041] The implementation principle of the water-soil separation device for earth pressure balance shield tunnel slag pond in this application embodiment is as follows: After the water-soil separation device is fixed in the pond body 9, the slag to be dewatered is poured into the soil unloading frame 3 by an excavator. Under the action of gravity, water and other liquids fall down from the second filter hole 321 of the inclined plate 32, and then enter the water collection frame 2 through the first filter hole 121 of the placement plate 12, driving the baffle plate 4 to rise. The dewatered slag falls down along the inclined plate 32 into the pond body 9, realizing water-soil separation. The water in the water collection frame 2 is discharged first by the water pump and the drainage pipe 22, and then the water-soil separation device is taken out. This avoids the water in the water collection frame 2 from being spilled into the pond body 9 during the handling and dismantling process. It can reduce the water content of the slag, maintain the soil aeration and permeability, reduce the impact on plant growth, and reduce soil erosion problems.

[0042] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An apparatus for separating water and soil for a soil pressure balanced shield soil pit, characterized by: The system includes a support frame (1), a water collection frame (2), and a soil unloading frame (3). The support frame (1) includes a support plate (11) and a placement plate (12). The support plate (11) is vertically arranged, and the placement plate (12) is horizontally arranged. The support plate (11) is located at both ends of the placement plate (12) along its length. The top surface of the support plate (11) is fixedly connected to the bottom surface of the placement plate (12). The bottom surface of the support plate (11) abuts against the inner bottom wall of the pool body (9). The placement plate (12) has a first filter hole (121) that allows liquid to pass through but prevents soil from passing through. The water collection frame (2) is located below the placement plate (12); The soil unloading frame (3) is set on the top surface of the placement plate (12). The soil unloading frame (3) includes a peripheral side plate (31) and an inclined plate (32). The peripheral side plate (31) is fixedly set on the top surface of the placement plate (12). The peripheral side wall of the inclined plate (32) is fixedly connected to the inner peripheral wall of the peripheral side plate (31). The inclined plate (32) is provided with a second filter hole (321) for liquid to pass through but not for soil. One side of the inclined plate (32) in the width direction is the lowest side. The peripheral side plate (31) on one side of the inclined plate (32) in the width direction is provided with a unloading notch (33). A baffle plate (4) is raised and lowered at the unloading notch (33) by a lifting assembly. When the baffle plate (4) rises, the soil falls into the pool (9) along the inclined plate (32).

2. The apparatus for separating water and soil of a soil pressure balance shield sludge pool according to claim 1, characterized in that: The first filter holes (121) are arranged in multiple rows at equal intervals along the width direction of the placement plate (12), and the first filter holes (121) in each row are arranged in multiple rows at equal intervals along the length direction of the placement plate (12).

3. The apparatus for separating water and soil of a soil pressure balanced shield sludge pool according to claim 1, characterized in that: The second filter holes (321) are arranged in multiple rows at equal intervals along the width direction of the inclined plate (32), and each row of the second filter holes (321) is arranged in multiple rows at equal intervals along the length direction of the inclined plate (32).

4. The water-soil separation device for earth pressure balance shield tunnel spoil pit according to claim 1, characterized in that: The top surface of the baffle plate (4) is provided with a lifting plate (41). The two ends of the lifting plate (41) extend out of the two ends of the soil unloading frame (3) in the length direction. The lifting assembly includes a lifting cylinder (5). The lifting cylinder (5) is fixedly installed on the outer wall of the two ends of the perimeter plate (31) in the length direction. The piston rod of the lifting cylinder (5) is fixedly connected to the two ends of the lifting plate (41) in the length direction.

5. The water-soil separation device for earth pressure balance shield tunnel spoil pit according to claim 1, characterized in that: The bottom surface of the baffle plate (4) abuts against the top surface of the inclined plate (32), the top surface of the baffle plate (4) is flush with the top surface of the peripheral side plate (31), and the side of the baffle plate (4) near the highest side of the inclined plate (32) abuts against the side of the peripheral side plate (31) with the unloading notch (33). A limiting plate (6) is fixedly connected to the side of the baffle plate (4) away from the highest side of the inclined plate (32). The bottom surface of the limiting plate (6) abuts against the top surface of the inclined plate (32). The top surface of the limiting plate (6) is flush with the top surface of the baffle plate (4). A guide rod (61) is vertically provided on the side of the limiting plate (6) near the peripheral side plate (31). The top surface of the guide rod (61) is flush with the top surface of the peripheral side plate (31). A guide groove (311) for the guide rod (61) to rise and fall is provided on the side of the peripheral side plate (31) near the limiting plate (6). The side of the placement plate (12) near the baffle plate (4) is located on the side of the lowest side of the inclined plate (32) near the highest side of the inclined plate (32).

6. The water-soil separation device for earth pressure balance shield tunnel spoil pit according to claim 1, characterized in that: Auxiliary plates (7) are fixedly installed at both ends of the top surface of the placement plate (12) along the length direction. The auxiliary plates (7) are vertically installed. Each auxiliary plate (7) has a positioning plate (71) on its top surface. The positioning plates (71) are horizontally installed. The two positioning plates (71) extend toward the side that is far away from each other. The bottom surface of the positioning plate (71) abuts against the top surface of the pool body (9). Each of the positioning plates (71) has a fixing plate (8) at both ends along its length. The fixing plate (8) is Z-shaped. The bottom surface of the upper plate (81) of the fixing plate (8) abuts against the top surface of the positioning plate (71). The upper plate (81) is fixed to the positioning plate (71) by a first screw (811). The bottom surface of the lower plate (82) of the fixing plate (8) abuts against the top surface of the pool body (9). The lower plate (82) is fixed to the pool body (9) by a second screw (821).

7. The water-soil separation device for earth pressure balance shield tunnel spoil pit according to claim 1, characterized in that: The support plate (11) is trapezoidal.

8. The water-soil separation device for earth pressure balance shield tunnel spoil pit according to claim 1, characterized in that: The side walls at both ends of the water collection frame (2) along its length are fixedly connected to the support plate (11).

9. The water-soil separation device for earth pressure balance shield tunnel spoil pit according to claim 1, characterized in that: The water collection frame (2) has a drain hole (21) at one end in the width direction. The drain pipe (22) is located near the top of the water collection frame (2). The drain pipe (22) is inserted into the drain hole (21). One end of the drain pipe (22) extends into the pool body (9) and extends to the bottom of the pool body (9). The other end of the drain pipe (22) is connected to a water pump. The water pump discharges the water in the water collection frame (2) out of the water collection frame (2).

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