Foundation pit leaking stoppage structure

Abstract

The utility model discloses a foundation pit leaking stoppage structure which is used for leaking stoppage of a water leakage point of a foundation pit, the foundation pit leaking stoppage structure comprises a water stopping assembly, a grouting assembly, a plugging assembly, a water conveying assembly and a recharge well, the water stopping assembly is arranged on the water leakage point in a plugging mode, the plugging assembly is connected with the water stopping assembly to plug the water leakage point, and the water conveying assembly is connected with the recharge well. The grouting assembly penetrates through the plugging assembly and extends into the water stopping assembly, one end of the water conveying assembly penetrates through the plugging assembly and extends into the water stopping assembly, the other end of the water conveying assembly extends into the recharge well, and the recharge well is located outside the foundation pit. According to the utility model, the problem of large local leakage can be effectively solved, the safety and stability of the foundation pit are guaranteed, and the surrounding environment and buildings are protected from being influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of construction, in particular to a foundation pit leakage plugging structure. Background Art

[0002] During the foundation pit support operation, foundation pit leakage often occurs. When encountering such problems, the traditional approach is: for large leakage or large-scale water seepage, backfilling measures are often required immediately to avoid foundation pit collapse and further damage to the surrounding environment; for smaller leakage, local treatment can be carried out by setting up a drainage system with plugging materials to effectively control the flow direction of water and reduce the erosion and impact of water on the foundation pit support structure. However, there is a lack of solutions for local large leakage. Utility Model Content

[0003] The utility model aims to provide a blocking structure for the situation of local large leakage.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a foundation pit plugging structure for plugging water leakage points in a foundation pit, the foundation pit plugging structure comprising a water-stopping component, a grouting component, a plugging component, a water supply component and a recharge well, the water-stopping component is plugged at the water leakage point, the plugging component is connected to the water-stopping component to plug the water leakage point, the grouting component passes through the plugging component and extends into the water-stopping component, one end of the water supply component passes through the plugging component and extends into the water-stopping component, and the other end extends into the recharge well, and the recharge well is located outside the foundation pit.

[0005] Furthermore, the water stop assembly includes a water stopper and a fixing member, the water stopper is plugged at the water leakage point, one end of the fixing member passes through the water stopper and is connected to the foundation pit, and the other end of the fixing member is connected to the sealing assembly.

[0006] Furthermore, the water stop member is hemp or straw, and the fixing member is a wooden stake.

[0007] Furthermore, the grouting assembly includes a double-liquid grouting pipe and a first valve, one end of the double-liquid grouting pipe passes through the sealing assembly and extends into the water-stop assembly, the other end of the double-liquid grouting pipe is exposed to the sealing assembly, and the first valve is connected to the other end of the double-liquid grouting pipe.

[0008] Furthermore, the sealing component includes a concrete slab and a concrete cover. The concrete slab seals outside the water leakage point and is connected to the water-stopping component. The concrete cover is arranged on the side of the concrete slab away from the water-stopping component, and the length of the concrete cover is greater than the length of the concrete slab.

[0009] Furthermore, the concrete slab is formed by casting a steel mesh.

[0010] Furthermore, the water supply component includes a drainage pipe, a water supply pipe, a water pump and a second valve. The sealing component is provided with a drainage port. One end of the drainage pipe passes through the drainage port and extends into the water-stop component, and the other end is connected to the water pump. One end of the water supply pipe is connected to the water pump, and the other end extends into the recharge well. The second valve is connected to the other end of the drainage pipe.

[0011] Furthermore, a water stop strip is provided inside the drainage tube wall.

[0012] Furthermore, the recharge well includes a pipe body, a filter pipe and a filter screen. The pipe body is arranged outside the foundation pit, the filter pipe is arranged in the pipe body, and the outer periphery of the filter pipe is wrapped with two layers of filter screens. The other end of the water delivery component extends into the filter pipe.

[0013] Furthermore, the pipe body includes a pipe body layer and a filling layer, wherein the filling layer is arranged above the pipe body layer, the pipe body layer is formed by filling 0.5-3 graded crushed stone, and the filling layer is formed by filling clay.

[0014] Compared with the prior art, the foundation pit plugging structure of the utility model has the following beneficial effects:

[0015] The water-stopping assembly of the utility model embodiment is plugged at the leakage point to seal the leakage point and prevent further water penetration, while preventing the underground soil from being lost with the water flow (i.e., the soil and sand gushing phenomenon), and maintaining the stability of the foundation pit wall; in addition, the grouting assembly passes through the sealing assembly and extends into the water-stopping assembly to inject slurry material, which can fill the cracks or holes in the foundation pit wall, enhance the density of the surrounding structure, and achieve the effect of sealing leakage; before, after or during the grouting treatment, the leaking water can be diverted, and the recharge well is located outside the foundation pit, which is used to receive the water discharged by the water delivery assembly, and is sometimes also used for groundwater recharge to balance the groundwater level and reduce the ground subsidence caused by extracting groundwater. Based on the above structure, the problem of large local leakage can be effectively solved, the safety and stability of the foundation pit can be guaranteed, and the surrounding environment and buildings can also be protected from being affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the foundation pit plugging structure provided by an embodiment of the utility model;

[0017] In the figure, 1. water-stop assembly; 11. water-stop part; 12. fixing part; 2. grouting assembly; 21. double-liquid grouting pipe; 3. plugging assembly; 31. concrete slab; 32. concrete cover; 4. water delivery assembly; 41. drainage pipe; 42. water delivery pipe; 43. water pump; 44. water-stop strip; 5. recharging well; 51. pipe body; 511. pipe body layer; 512. filling layer; 52. filter pipe; 53. filter screen. DETAILED DESCRIPTION

[0018] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0019] like Figure 1 As shown, the utility model provides a foundation pit plugging structure, which is used to plug the leakage points of the foundation pit. The foundation pit plugging structure includes a water-stopping component 1, a grouting component 2, a plugging component 3, a water delivery component 4 and a recharging well 5. The water-stopping component 1 is plugged at the leakage point to plug the leakage point and prevent further water penetration, while preventing the underground soil from being lost with the water flow (i.e., the soil and sand gushing phenomenon), and maintaining the stability of the foundation pit wall. The plugging component 3 is connected to the water-stopping component 1; the grouting component 2 passes through the plugging component 3 and extends into the water-stopping component 1, and is used to inject slurry materials, such as cement slurry or other chemical slurries, which are injected around the leakage point through the grouting component 2 to fill the cracks or holes in the foundation pit wall, enhance the density of the surrounding structure, and achieve the effect of plugging leakage; in addition, the plugging component 3, as a structure connecting the water-stopping component 1 and the grouting component 2, provides a sealing interface to ensure that the slurry will not leak during the grouting process, and at the same time strengthen the plugging effect of the water-stopping component 1. One end of the water delivery component 4 passes through the sealing component 3 and extends into the water-stop component 1, and the other end extends into the recharge well 5, so that the leakage water can be diverted before, after or during the grouting treatment. The recharge well 5 is located outside the foundation pit and is used to receive the water discharged by the water delivery component 4. It is sometimes also used for groundwater recharge to balance the groundwater level and reduce problems such as ground subsidence caused by groundwater extraction.

[0020] Based on the above structure, the problem of large local leakage can be effectively solved, ensuring the safety and stability of the foundation pit, while also protecting the surrounding environment and buildings from being affected.

[0021] Furthermore, the water stop assembly 1 includes a water stop 11 and a fixing member 12. The water stop 11 is installed at the water leakage point to prevent water from flowing through, prevent soil loss, and maintain the stability of the foundation pit structure; one end of the fixing member 12 passes through the water stop 11 and is connected to the foundation pit to ensure that the water stop 11 is fixed at the position of the water leakage point, and the other end of the fixing member 12 is connected to the plugging assembly 3 to form an integrated waterproof system. The water stop assembly 1 of this embodiment effectively seals the water leakage point of the foundation pit, and with the assistance of the plugging assembly 3, multiple protections are formed to prevent leakage of the foundation pit.

[0022] Furthermore, the water stop 11 is hemp or straw, and the fixing member 12 is a wooden stake. This embodiment utilizes the natural water absorption and expansion of hemp or straw. When hemp or straw is tightly filled into the leaking point or gap, they can absorb water and expand, thereby blocking the water flow path and playing a preliminary water stop role. In addition, the wooden stake plays a fixing and supporting role. When the wooden stake is driven into the ground, one end is close to or passes through the water stop 11 (hemp or straw), thereby fixing the position of the water stop material to prevent it from moving or falling off.

[0023] Furthermore, the grouting assembly 2 includes a double-liquid grouting pipe 21 and a first valve. One end of the double-liquid grouting pipe 21 passes through the plugging assembly 3 and extends into the water-stop assembly 1 to ensure that the grouting material can directly act on the leakage area. The other end of the double-liquid grouting pipe 21 is exposed to the plugging assembly 3, which is convenient for connecting the control equipment to perform grouting operations. In addition, the first valve is connected to the other end of the double-liquid grouting pipe 21 to control the flow of the grouting material. When the grouting operation is not performed, the valve remains closed to prevent the material from mixing or leaking in advance. When grouting is required, the valve is opened to allow the two chemical liquid materials to be mixed in proportion and injected into the predetermined position through the grouting pipe, ensuring the controllability of the grouting process, allowing construction personnel to start grouting at an accurate time, and at the same time, the material supply can be cut off immediately after the grouting is completed to avoid waste and unnecessary environmental pollution.

[0024] Furthermore, the plugging component 3 includes a concrete slab 31 and a concrete cover 32. The concrete slab 31 is sealed outside the water leakage point, physically blocking the water leakage area to prevent further water penetration; the concrete slab 31 is connected to the water-stopping component 1 to form a solid anti-seepage wall together. The concrete material is suitable for withstanding the groundwater pressure and the thrust of the surrounding soil due to its good water resistance and strength to prevent the expansion of the water leakage point; the concrete cover 32 is arranged on the side of the concrete slab 31 away from the water-stopping component 1, and the length of the concrete cover 32 is greater than the length of the concrete slab 31, providing additional support for the concrete slab 31, increasing the stability and bearing capacity of the entire plugging structure, especially when there is a large water pressure or soil stress on the side wall of the foundation pit. In addition, by extending beyond the length of the concrete slab 31, the concrete cover 32 can cover potential leakage areas or cracks more widely, forming a more comprehensive waterproof barrier and reducing the risk of leakage.

[0025] Furthermore, the concrete slab 31 is formed by casting a steel mesh. Based on the above structure, the steel mesh is used to improve the tensile strength and bearing capacity of the concrete. In addition, the grid structure of the steel mesh helps to disperse stress and reduce stress concentration inside the concrete, thereby effectively preventing or delaying the occurrence of cracks in the concrete slab 31 and ensuring the integrity of the structure.

[0026] Furthermore, the water delivery component 4 includes a drainage pipe 41, a water delivery pipe 42, a water pump 43 and a second valve. The sealing component 3 is provided with a drainage port. One end of the drainage pipe 41 passes through the drainage port and extends into the water-stop component 1 to collect leaking water from the leakage point, and the other end is connected to the water pump 43 to pump out the accumulated water; one end of the water delivery pipe 42 is connected to the water pump 43, and the other end extends into the recharge well 5 to transfer the water pumped from the drainage pipe 41 to the recharge well 5 to avoid unnecessary impact on the surrounding groundwater level; in addition, the second valve is connected to the other end of the drainage pipe 41 to control the water flow, so as to open or close the water flow channel when needed, such as for maintenance, flow adjustment or emergency shutdown operations.

[0027] Furthermore, a water stop strip 44 is provided inside the wall of the drainage pipe 41. When installed inside the wall of the drainage pipe 41, once water contacts the water stop strip 44, its volume will increase, filling up the tiny gap between the pipe wall and the water stop strip 44, forming a tight waterproof layer, effectively preventing water penetration.

[0028] Furthermore, the recharge well 5 includes a pipe body 51, a filter pipe 52 and a filter screen 53. The pipe body 51 serves as the main structure of the recharge well 5 and is arranged outside the foundation pit to support the entire recharge well 5 structure and guide the water flow in and out. The filter pipe 52 is arranged in the pipe body 51 to ensure that the water flow can pass smoothly, and at the same time filter out larger particles of impurities carried in the water to prevent these impurities from clogging the recharge system or depositing underground, affecting the permeability of groundwater. In addition, the outer periphery of the filter pipe 52 is wrapped with two layers of filter screen 53 to enhance the filtering effect and ensure that only clean water can pass through the filter screen 53 into the underground aquifer, avoiding pollution of the groundwater environment or clogging of the recharge well 5 itself. The other end of the water delivery component 4 extends into the filter pipe 52 to ensure that the extracted water flows through the double filtration of the filter pipe 52 and the filter screen 53.

[0029] Furthermore, the pipe body 51 includes a pipe body layer 511 and a filling layer 512. The filling layer 512 is arranged above the pipe body layer 511. The pipe body layer 511 is filled with 0.5-3 graded gravel to provide good water permeability, allowing water to flow freely while maintaining sufficient structural strength to support the soil load above and around it; the filling layer 512 is filled with clay to isolate and seal, preventing impurities, pollutants or surface water in the upper soil from directly penetrating into the pipe body layer 511 or deeper groundwater.

[0030] It can be understood that the 0.5-3 graded gravel in this embodiment refers to gravel particles with a diameter between 0.5 mm and 3 mm. This particle size combination is conducive to water penetration and ensures the stability and durability of the structure. It is suitable for constructing well structures that require water permeability.

[0031] The construction process is as follows: clean the loose soil layer at the leaking place; stuff hemp or straw into the leaking point and drive in wooden stakes to fix it; set a drainage port, and set a double-liquid grouting pipe 21 and a first valve at the drainage port; then hang a steel mesh to cast a 150-thick concrete slab 31, and spray a concrete cover 32 on the periphery; in addition, set a recharging well 5 outside the foundation pit, and pump the water flowing out of the drainage port into the recharging well 5 through a water pump 43, which can reduce ground settlement, and finally close the first valve to perform double-liquid grouting.

[0032] In summary, the embodiments of the utility model provide a foundation pit plugging structure, which can effectively solve the problem of large local leakage, ensure the safety and stability of the foundation pit, and also protect the surrounding environment and buildings from being affected.

[0033] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A foundation pit plugging structure, used to plug the leaking points of the foundation pit, characterized in that: The foundation pit plugging structure includes a water-stop component, a grouting component, a plugging component, a water supply component and a recharge well. The water-stop component is plugged at the leakage point. The plugging component is connected to the water-stop component to plug the leakage point. The grouting component passes through the plugging component and extends into the water-stop component. One end of the water supply component passes through the plugging component and extends into the water-stop component, and the other end extends into the recharge well. The recharge well is located outside the foundation pit.

2. The foundation pit plugging structure according to claim 1, characterized in that: The water stop assembly includes a water stopper and a fixing member. The water stopper is plugged at the water leakage point. One end of the fixing member passes through the water stopper and is connected to the foundation pit, and the other end of the fixing member is connected to the sealing assembly.

3. The foundation pit plugging structure according to claim 2, characterized in that: The water stop is made of hemp or straw, and the fixing member is a wooden stake.

4. The foundation pit plugging structure according to claim 1, characterized in that: The grouting assembly includes a double-liquid grouting pipe and a first valve, one end of the double-liquid grouting pipe passes through the sealing assembly and extends into the water-stop assembly, the other end of the double-liquid grouting pipe is exposed to the sealing assembly, and the first valve is connected to the other end of the double-liquid grouting pipe.

5. The foundation pit plugging structure according to claim 1, characterized in that: The sealing component includes a concrete slab and a concrete cover. The concrete slab seals outside the water leakage point and is connected to the water-stopping component. The concrete cover is arranged on the side of the concrete slab away from the water-stopping component, and the length of the concrete cover is greater than the length of the concrete slab.

6. The foundation pit leak plugging structure according to claim 5, characterized in that: The concrete slab is formed by pouring the steel mesh.

7. The foundation pit plugging structure according to claim 1, characterized in that: The water delivery component includes a drainage pipe, a water delivery pipe, a water pump and a second valve. The blocking component is provided with a drainage port. One end of the drainage pipe passes through the drainage port and extends into the water-stop component, and the other end is connected to the water pump. One end of the water delivery pipe is connected to the water pump, and the other end extends into the recharge well. The second valve is connected to the other end of the drainage pipe.

8. The foundation pit leak plugging structure according to claim 7, characterized in that: A water stop strip is arranged inside the drainage pipe wall.

9. The foundation pit plugging structure according to claim 1, characterized in that: The recharging well includes a pipe body, a filter pipe and a filter screen. The pipe body is arranged outside the foundation pit, the filter pipe is arranged in the pipe body, and the outer periphery of the filter pipe is wrapped with two layers of filter screens. The other end of the water delivery component extends into the filter pipe.

10. The foundation pit plugging structure according to claim 9, characterized in that: The pipe body comprises a pipe body layer and a filling layer, wherein the filling layer is arranged above the pipe body layer, the pipe body layer is formed by filling with 0.5-3 graded crushed stones, and the filling layer is formed by filling with clay.

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