High-water-content soil body fertilizer groove backfilling device and using method thereof

Abstract

The invention discloses a device and a method for backfilling a high-water-content soil body fertilizer groove, an anchoring type electrode net is made of a conductive material and is horizontally laid in backfill soil in a layered manner, current can be uniformly and quickly diffused in the soil body after the electrode net is electrified, in addition, pins arranged on the electrode net can firmly fix the electrode net in each layer of backfill soil, so that the backfill soil is more uniform, and the water content of the backfill soil is reduced. In addition, the pins have the wire performance, current can be diffused into the soil layer more deeply, water in the backfilled soil can be discharged quickly, the soil body can be gelatinized and solidified quickly, the fertilizer groove is internally and longitudinally provided with a plurality of through water-attaching plates, and the water-attaching plates are not prone to moving or bending in the laying process of the upper layer backfilled soil. The main purpose of the invention is to facilitate water to seep into a fertilizer tank water collection blind ditch arranged at the lowermost part of a fertilizer tank through a longitudinally arranged water attachment plate in the process of multiple exchange of positive and negative electrodes and electrification of an anchored electrode net, finally flow into a fertilizer tank water collection blind well, and are discharged out of the fertilizer tank through a water lift.

Description

Technical Field

[0001] The invention relates to the technical field of soil fertilizer trough backfilling, and in particular to a high-water content soil fertilizer trough backfilling device and a method of using the same. Background Art

[0002] Normally, the soil backfilled in the fertilizer trough of the foundation pit should meet the relevant requirements, and the technical indicators of the soil after backfilling should also meet the requirements. However, in some coastal areas or areas with high water content, during the construction of underground structures such as basements and pipe galleries, there is no soil that meets the requirements available on site for backfilling, and the only way is to transport the soil that meets the requirements for backfilling. Due to the large amount of soil transported, the distance is long, and the cost is high, it is not economical. In this case, how to use the existing high-water content soil on the site, use some special process methods and equipment to treat it to meet the requirements, and then backfill it has become an urgent problem that needs to be solved.

[0003] The Chinese patent with announcement number CN214798306U mentions a construction method for filling a foundation pit fertilizer tank with a tidal spray method, which includes the following steps: (1) using a small crushing and mixing machine to crush the soil blocks on site and mix the soil and cement evenly to form cement soil, spraying a little water during the mixing process to suppress dust; (2) using a cement soil sprayer to spray the cement soil into the fertilizer tank, adding water in the proportion of 40% to 50% of the total amount of cement soil during the spraying process, and spraying out a flowable cement soil slurry; the water pressure is 0.5 to 1.0 MPa. The present invention can ensure safe backfilling and will not cause damage to the existing support system and buildings; the soil pile on site is used as backfill material, which is directly used after crushing without external transportation and disposal, saving 50% to 60% of the cost compared with low-grade concrete or mortar, and reducing the transportation and disposal costs of external abandoned soil. It has a short construction period and is easy to operate. It has obvious economic, social and environmental benefits. Although the above scheme has many beneficial effects, it cannot effectively control the groundwater level when backfilling the foundation pit fertilizer trough, prevent the influx of groundwater into the foundation pit, and the dewatering of the foundation pit is difficult.

[0004] In the Chinese patent with announcement number CN118461633A, a construction method for backfilling a foundation pit fertilizer trough by tidal spraying method is disclosed, which includes: cleaning the foundation pit, tidal spraying construction, monitoring the backfill body, soil improvement technology, compaction inspection and monitoring management; the present invention can effectively reduce the moisture content of the soil around the foundation pit through groundwater level control and soil improvement technology, enhance the compressive strength and stability of the soil body, thereby improving the overall stability of the foundation pit, and by adding lightweight aggregates and other thermal insulation materials, the thermal insulation performance and compressive strength of the filling material can be improved, and heat conduction and load concentration can be reduced, thereby improving the temperature change resistance and bearing capacity of the foundation pit. The tidal spraying method for backfilling the foundation pit fertilizer trough has the advantages of fast construction speed and simple process, which can greatly improve construction efficiency, shorten construction period, and reduce construction costs. The use of biomaterials and environmentally friendly improvers for soil improvement can reduce pollution and damage to the surrounding environment and reduce the impact of the project on the ecological environment. However, when there is too much water in the fertilizer trough, the water has nowhere to be discharged.

[0005] Therefore, the current foundation pit fertilizer tank backfill still has the following deficiencies:

[0006] The soil backfilled in the fertilizer trough contains silt and has a high water content, so it cannot be completely compacted in layers. Surface water or rainwater can easily enter the fertilizer trough, causing the ground around the building to sink and eventually produce surface cracks. In addition, if the base stratum is clay, the soil backfilled in the fertilizer trough cannot achieve a good density, and the soil in the fertilizer trough will be saturated. At this time, the water in the fertilizer trough has nowhere to be discharged. Over time, the outer wall of the basement is prone to leakage. This phenomenon is more troublesome to deal with and the cost of handling is high. Backfilling the soil in the fertilizer trough in layers and then compacting it with small compaction equipment may seem simple, but it is not an easy task to control the quality of the backfill. Summary of the invention

[0007] In view of the above-mentioned deficiencies in the existing process methods and equipment, this patent invents a high-water content soil fertilizer trough backfill device and its use method, the purpose of which is to solve the problems raised in the above-mentioned background process methods and equipment.

[0008] In order to achieve the above invention patent purpose, the technical solution adopted by the invention patent is:

[0009] A high-water content soil fertilizer tank backfill device and a use method thereof, comprising a fertilizer tank water collection blind ditch, a fertilizer tank water collection blind well, a water lifter, a drain pipe, a water attachment plate, a fertilizer tank hollow cover plate, an anchoring electrode net, an electrode frame net, an anchoring pin, an insulated wire and a low-voltage DC power supply;

[0010] The fertilizer trough water collection blind ditch is a drainage ditch dug in the foundation soil at the bottom of the fertilizer trough, and its side walls and the bottom of the drainage ditch are paved with impermeable materials, that is, the outer edge of the raft and the inner edge of the supporting structure D are covered with a fertilizer trough hollow cover plate;

[0011] The fertilizer trough water collection blind well is a water collection pit that is arranged at a certain distance along the fertilizer trough water collection blind ditch, has a certain depth, and can hold a certain amount of water. The surroundings and bottom are also paved with impermeable materials. A suitable water lifter is installed in the fertilizer trough water collection blind well, and a drainage pipe is connected in advance. The top of the fertilizer trough water collection blind well is also covered with a fertilizer trough hollow cover plate;

[0012] The anchored electrode mesh is an electrode frame mesh made of metal material with good electrical conductivity. A plurality of insulated wires are connected to one side of the mesh, and a certain number of pins are respectively arranged on the upper and lower sides of the mesh.

[0013] As an improvement, the fertilizer trough water collection blind ditch and the fertilizer trough water collection blind well are arranged at the bottom of the fertilizer trough in the foundation pit, and a water lifter is pre-arranged in the fertilizer trough water collection blind well.

[0014] As an improvement, the hollow cover plate of the fertilizer trough is a water-permeable plate with certain strength and rigidity, and its two sides are tightly fitted to the raft plate and the supporting structure D respectively.

[0015] As an improvement, the water-attached plate is a plate strip with a smooth surface, insulation, and a plurality of fine vertical grooves on both sides.

[0016] As an improvement, the anchored electrode mesh is an electrode frame mesh made of metal material with good conductive properties. Multiple insulated wires are connected to one side of the mesh, and a certain number of pins are respectively arranged on the upper and lower sides of the mesh. The above-mentioned pins are rod-shaped bodies with a certain length, rigidity and good conductive properties. One end is firmly connected to the electrode frame mesh, and the other end is pointed and can be anchored in the soil.

[0017] A method for using a high-water content soil fertilizer tank backfill device comprises the following steps:

[0018] Step 1: Dig blind wells for collecting fertilizer troughs at certain intervals at the bottom of the fertilizer trough, set appropriate water lifters in the blind wells for collecting fertilizer troughs, connect the blind wells for collecting fertilizer troughs through blind ditch for collecting fertilizer troughs, and cover the edge of the raft and the inner side of the supporting structure D with hollow cover plates for the fertilizer troughs.

[0019] Step 2: Fix vertical water-attached plates at certain intervals, then lay the first layer of backfill soil A, set an anchored electrode mesh on the top of this layer of backfill soil, and connect it to the insulated wire.

[0020] Step 3: Lay the second layer of backfill soil B, pass the lower layer of water-attached plate through the current backfill soil, and lay the anchored electrode mesh on the top of the current backfill soil to connect it with the insulated wire.

[0021] Step 4: Lay the third layer of backfill soil C, pass the lower layer of water-attached plate through the current layer of backfill soil, and lay the anchored electrode mesh on the top of the current layer of backfill soil, connecting it with the insulated wire.

[0022] Step 5: Connect the positive and negative insulated wires to the positive and negative poles of the low-voltage DC power supply respectively. After running for several hours, swap the positive and negative insulated wires and run for several more hours. During this period, a chemical reaction occurs in the soil, producing a gelling effect.

[0023] Step 6: Continue to backfill upwards layer by layer at the same time, lay the anchored electrode mesh in sequence, and after the top layer of the anchored electrode mesh of each group is covered by the backfill soil, connect the water-attached plate and the drainage pipe, and connect the low-voltage DC power supply if the requirements are met.

[0024] Step 7: Start the water pump to drain the water collected in the blind well of the fertilizer tank.

[0025] The advantages of the present invention compared with the prior art are: a high-water content soil fertilizer trough backfill device and a method of using the same, an anchored electrode net made of conductive material, horizontally laid in layers in the backfill soil, and after power-on, the current can diffuse in the soil more evenly and quickly, and the pins arranged on the electrode net can firmly fix the electrode net in each layer of backfill soil, and are not easily moved or bent during the laying of the upper backfill soil. In addition, the pins have the performance of a conductor, and can diffuse the current more deeply into the soil layer, so as to facilitate the rapid discharge of water in the backfill soil and make the soil body quickly gel and solidify, and multiple through-going water-attached plates are longitudinally arranged in the fertilizer trough, and the main purpose is to facilitate the water to seep through the longitudinally arranged water-attached plates to the fertilizer trough water collection blind ditch arranged at the bottom of the fertilizer trough during the process of multiple exchanges of positive and negative poles of the anchored electrode net for power-on, and finally flow into the fertilizer trough water collection blind well, and be discharged from the fertilizer trough through the water lifter. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of the anchored electrode network of the present invention;

[0027] Figure 2 This is a process flow chart of the patented process of the present invention;

[0028] Figure 3 It is a schematic diagram of the overall process effect of the patent of this invention.

[0029] Reference table of reference numerals:

[0030] 1. Blind ditch for water collection in fertilizer trough; 2. Blind well for water collection in fertilizer trough; 3. Water lifter; 4. Drain pipe; 5. Water-attached plate; 6. Hollow cover plate of fertilizer trough; 7. Anchored electrode net; 71. Electrode frame net; 72. Anchor pins 8. Insulated wire; 9. Low-voltage DC power supply; A. First layer of backfill soil; B. Second layer of backfill soil; C. Third layer of backfill plan; D. Support structure; E. Bottom plate; F. Structural exterior wall. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0032] A high-water content soil fertilizer trough backfill device and a use method thereof, comprising a fertilizer trough water collection blind ditch 1, a fertilizer trough water collection blind well 2, a water lifter 3, a drain pipe 4, a water attachment plate 5, a fertilizer trough hollow cover 6, an anchoring electrode net 7, an electrode frame net 71, an anchoring pin 72, an insulated wire 8 and a low-voltage DC power supply 9.

[0033] The fertilizer trough water collection blind ditch 1 is a drainage ditch dug in the foundation soil at the bottom of the fertilizer trough, and its side walls and the bottom of the drainage ditch are paved with impermeable materials, that is, the outer edge of the raft and the inner edge of the supporting structure D are covered with a fertilizer trough hollow cover plate 6. The fertilizer trough hollow cover plate 6 is a water-permeable plate with certain strength and rigidity, and its two sides are tightly fitted with the raft and the supporting structure D respectively.

[0034] The fertilizer trough water collection blind well 2 is a water collection pit with a certain depth and can hold a certain amount of water, which is arranged along the fertilizer trough water collection blind ditch 1 at a certain interval. The surrounding and bottom are also paved with impermeable materials. A suitable water lifter 3 is installed in the fertilizer trough water collection blind well 2, and the drainage pipe 4 is connected in advance. The top of the fertilizer trough water collection blind well 2 is also covered with a fertilizer trough hollow cover plate 6. The fertilizer trough water collection blind ditch 1 and the fertilizer trough water collection blind well 2 are arranged at the bottom of the fertilizer trough in the foundation pit, and a water lifter 3 is pre-installed in the fertilizer trough water collection blind well 2.

[0035] The anchored electrode mesh 7 is an electrode frame mesh 71 made of metal material with good electrical conductivity. A plurality of insulated wires 8 are connected to one side of the mesh. A certain number of pins 72 are respectively arranged on the upper and lower sides of the mesh. The pins 72 are rod-shaped bodies with a certain length, rigidity and good electrical conductivity. One end is firmly connected to the electrode frame mesh 71, and the other end is pointed and can be anchored in the soil.

[0036] The water-attached plate 5 is a plate strip with a smooth surface, insulation, and a plurality of fine vertical grooves on both sides.

[0037] A method for using a high-water content soil fertilizer tank backfill device comprises the following steps:

[0038] Step 1: Dig blind wells for collecting fertilizer troughs at certain intervals at the bottom of the fertilizer trough, set appropriate water lifters in the blind wells for collecting fertilizer troughs, connect the blind wells for collecting fertilizer troughs through blind ditch for collecting fertilizer troughs, and cover the edge of the raft and the inner side of the supporting structure D with hollow cover plates for the fertilizer troughs.

[0039] Step 2: Fix vertical water-attached plates at certain intervals, then lay the first layer of backfill soil A, set an anchored electrode mesh on the top of this layer of backfill soil, and connect it to the insulated wire.

[0040] Step 3: Lay the second layer of backfill soil B, pass the lower layer of water-attached plate through the current backfill soil, and lay the anchored electrode mesh on the top of the current backfill soil to connect it with the insulated wire.

[0041] Step 4: Lay the third layer of backfill soil C, pass the lower layer of water-attached plate through the current layer of backfill soil, and lay the anchored electrode mesh on the top of the current layer of backfill soil, connecting it with the insulated wire.

[0042] Step 5: Connect the positive and negative insulated wires to the positive and negative poles of the low-voltage DC power supply respectively. After running for several hours, swap the positive and negative insulated wires and run for several more hours. During this period, a chemical reaction occurs in the soil, producing a gelling effect.

[0043] Step 6: Continue to backfill upwards layer by layer at the same time, lay the anchored electrode mesh in sequence, and after the top layer of the anchored electrode mesh of each group is covered by the backfill soil, connect the water-attached plate and the drainage pipe, and connect the low-voltage DC power supply if the requirements are met.

[0044] Step 7: Start the water pump to drain the water collected in the blind well of the fertilizer tank.

[0045] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A high-water content soil fertilizer tank backfilling device, characterized in that: It comprises a fertilizer tank water collection blind ditch (1), a fertilizer tank water collection blind well (2), a water lifter (3), a drainage pipe (4), a water attachment plate (5), a fertilizer tank hollow cover plate (6), an anchoring electrode net (7), an electrode frame net (71), an anchoring pin (72), an insulated wire (8) and a low-voltage DC power supply (9); The fertilizer trough water collection blind ditch (1) is a drainage ditch dug in the foundation soil at the bottom of the fertilizer trough, and its side walls and the bottom of the drainage ditch are paved with impermeable materials, that is, the outer edge of the raft plate and the inner edge of the supporting structure are covered with a fertilizer trough hollow cover plate (6); The fertilizer trough water collection blind well (2) is evenly arranged on the fertilizer trough water collection blind ditch (1), the lower end of the fertilizer trough water collection blind well (2) is lower than the lower end of the water collection blind ditch (1), and is a water collection pit for collecting water. The surroundings and bottom of the fertilizer trough water collection blind well are paved with watertight materials. A water lifter (3) is installed in the fertilizer trough water collection blind well (2), and a drainage pipe (4) is connected in advance. The top of the fertilizer trough water collection blind well (2) is covered with a fertilizer trough hollow cover plate (6); The anchoring electrode net (7) is an electrode frame net (71) made of metal material and having good electrical conductivity. A plurality of insulating wires (8) are evenly connected to one side of the electrode frame net (71), and a plurality of matrix-distributed pins (72) are respectively arranged on the upper and lower sides of the electrode frame net (71).

2. A high-water content soil fertilizer tank backfilling device according to claim 1, characterized in that: The fertilizer trough water collection blind ditch (1) and the fertilizer trough water collection blind well (2) are arranged at the bottom of the fertilizer trough in the foundation pit.

3. A high-water content soil fertilizer tank backfilling device according to claim 1, characterized in that: The hollow cover plate (6) of the fertilizer tank is a water-permeable plate, and two sides thereof are respectively tightly fitted to the raft plate and the supporting structure.

4. A high-water content soil fertilizer tank backfilling device according to claim 1, characterized in that: The water-attaching plate (5) is a plate strip with a smooth surface, insulation, and a plurality of fine vertical grooves on both sides.

5. The high-water content soil fertilizer tank backfilling device according to claim 1 is characterized in that: The pin (72) is a rod-shaped body with conductive properties. One end of the pin (72) is connected to the electrode frame net (71), and the other end is anchored in the soil.

6. A method for using a high-water content soil fertilizer tank backfill device, characterized in that: The following steps are involved: Step 1: Dig blind wells for collecting fertilizer troughs at even intervals at the bottom of the fertilizer trough, set water lifters in the blind wells for collecting fertilizer troughs, connect the blind wells for collecting fertilizer troughs through blind trenches for collecting fertilizer troughs, and cover the edges of the raft slabs and the inner side of the supporting structure with hollow cover plates for the fertilizer troughs. Step 2: Fix the vertical water-attached plates at uniform intervals, then lay the first layer of backfill soil, set an anchored electrode mesh on the top of this layer of backfill soil, and connect it to the insulated wire. Step 3: Lay the second layer of backfill soil, pass the lower water-attached plate through the second layer of backfill soil, and lay the anchored electrode mesh on the top of the second layer of backfill soil to connect it with the insulated wire. Step 4: Lay the third layer of backfill soil, pass the lower layer of water-attached plate through the third layer of backfill soil, and lay the anchored electrode mesh on the top of the third layer of backfill soil to connect it with the insulated wire. Step 5: Connect the positive and negative insulated wires to the positive and negative poles of the low-voltage DC power supply respectively. After running for 6-10 hours, swap the positive and negative insulated wires and run for another 6-10 hours. During this period, a chemical reaction occurs in the soil, producing a gelling effect. Step 6: Continue to backfill upwards layer by layer at the same time, and lay the anchored electrode mesh in sequence. After the top layer of the anchored electrode mesh of each group is covered by the backfill soil, connect the water-attached plate and the drainage pipe. After the laying is completed, the anchored electrode mesh can be connected to the low-voltage DC power supply. Step 7: Start the water pump to drain the water collected in the blind well of the fertilizer tank.

Images