Recyclable foundation pit construction dewatering well structure

Abstract

The recoverable foundation pit construction dewatering well structure comprises a well body, the well body comprises a reinforcement cage, a steel wire mesh, a dense mesh, a filter layer, a filter material layer and a clay layer, the reinforcement cage is arranged in a pile hole, the reinforcement cage and the inner wall of the pile hole are arranged in a spaced mode, the steel wire mesh is wound around the reinforcement cage, and the dense mesh is arranged on the filter material layer. The dense mesh is wound on the steel wire mesh, the filter layer is located at the bottom of the reinforcement cage, and the filter material layer is wound on the dense mesh; the framework is formed by arranging the structures such as the reinforcement cage and the steel wire mesh, after the dewatering well is used, the framework can be pulled out of a pile hole through an auxiliary machine, and therefore the dewatering well can be recycled conveniently; the steel wire mesh is arranged outside the reinforcement cage, the dense mesh is arranged outside the steel wire mesh, and the steel wire mesh can support the dense mesh, so that the framework which does not need to be segmented and can be integrally hoisted is formed, the dense mesh can filter silt permeating into the dewatering well along with underground water, and silt accumulation in the dewatering well can be reduced.

Description

Technical Field

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

[0002] The foundation pit is a soil pit excavated at the foundation design location according to the base elevation and foundation plane dimensions. Since the foundation pit is excavated into the land, when the bottom of the foundation pit is lower than the groundwater level, the groundwater will penetrate into the foundation pit, and the water in the foundation pit will affect the further construction of the foundation pit. Therefore, it is necessary to set up a precipitation well around the foundation pit before the foundation pit is excavated. The precipitation well can drain the groundwater in the soil layer within the excavation range and provide a relatively dry environment for the foundation pit excavation.

[0003] A precipitation well is usually made of several sandless concrete pipes. When installing the sandless concrete pipes, the several sandless concrete pipes are spliced ​​one by one from the bottom of the well to the top. When the precipitation well is working, groundwater seeps into the well from the bottom of the pipe. Since the sandless concrete pipes are buried under the surface and are spliced ​​together, it is not convenient to extract the sandless concrete pipes from the ground for recycling after the precipitation well is used up, resulting in material waste. When the precipitation well is working, the mud and sand around the well wall easily flow into the precipitation well from the joint of the two sandless concrete pipes along with the groundwater and accumulate in the precipitation well, resulting in mud and sand accumulation in the precipitation well. Utility Model Content

[0004] The utility model aims to provide a recyclable dewatering well structure for foundation pit construction, which can be easily recycled and can reduce the accumulation of silt in the dewatering well.

[0005] To achieve the above-mentioned purpose, a recyclable foundation pit construction dewatering well structure is provided, which comprises: a well body, the well body comprises a steel cage, a wire mesh, a dense mesh, a filter layer, a filter material layer and a clay layer, the steel cage is arranged in a pile hole, and the steel cage and the inner wall of the pile hole are arranged at intervals, the wire mesh is wound around the steel cage, the dense mesh is wound around the wire mesh, the filter layer is located at the bottom of the steel cage, the filter material layer is wound around the dense mesh, the clay layer is located at the top of the filter material layer and is wound around the dense mesh, and the top surface of the clay layer is at the same height as the ground; a connecting component, the connecting component comprises a connecting head and a connecting pipe, the connecting head is located at the top of the well body, a water pump is arranged in the connecting head, the outlet end of the water pump is connected to the connecting pipe, and the inlet end of the water pump is connected to a water inlet pipe located on the inner side of the well body; a sedimentation component, the sedimentation component is connected to the connecting pipe.

[0006] The working principle and effect of the above scheme: When installing a precipitation well, use a drilling rig to dig a pile hole underground, fix the wire mesh on the outside of the steel cage, and fix the dense mesh on the outside of the wire mesh. At this time, the steel cage, wire mesh and dense mesh form a skeleton, and the skeleton is placed in the pile hole. The skeleton and the inner wall of the pile hole are arranged at intervals, and a filter layer is filled at the bottom of the skeleton. The filter material layer is filled in the gap between the skeleton and the pile hole, and a clay layer is set between the top of the filter material layer and the ground. After the installation of the well body is completed, a connector is installed on the top of the well body, and a connecting pipe is used to connect the connector to the municipal drainage system, and a sedimentation component is set at the interface of the municipal drainage system; when the groundwater level is higher than the bottom of the well body, the groundwater passes through the filter layer and the skeleton in turn and enters the well body.

[0007] By setting up structures such as steel cages and wire meshes to form a skeleton, when the precipitation well is no longer used, auxiliary machinery can be used to pull the skeleton out of the pile hole, thereby facilitating the recycling of the precipitation well; by setting a wire mesh outside the steel cage and a dense mesh outside the wire mesh, the wire mesh can support the dense mesh, thereby forming a skeleton that does not require segmentation and can be hoisted as a whole, and the dense mesh can filter the sediment that infiltrates into the precipitation well with groundwater, thereby reducing the accumulation of sediment in the precipitation well.

[0008] According to the recyclable foundation pit construction dewatering well structure, the steel cage includes main bars and stirrups, a plurality of main bars are vertically arranged, and the stirrups are wound around the plurality of main bars and connected to each of the main bars.

[0009] The steel cage is composed of multiple main bars and multiple stirrups, wherein the multiple main bars are arranged vertically and surrounded into a cylinder, and the stirrups are fixedly sleeved on the multiple main bars to form a cylinder; the main bars are used to support the frame, and the stirrups connect the main bars.

[0010] According to the recyclable foundation pit construction dewatering well structure, the sedimentation assembly includes a sedimentation tank and a cleaning basket, and the cleaning basket is located in the sedimentation tank.

[0011] When the precipitation well is working, groundwater seeps into the well body, and a pump is used to pump the water in the well body to the sedimentation tank through the connecting pipe; when the sedimentation tank is working, a cleaning basket is placed in the sedimentation tank. After the water stays in the sedimentation tank, the silt in the water sinks into the cleaning basket. When cleaning the deposited silt, turn off the pump and lift the cleaning basket. After lifting the cleaning basket, clean the deposited silt. By setting up the cleaning basket, there is no need to enter the sedimentation tank to carry out cleaning work when cleaning the silt.

[0012] According to the recyclable foundation pit construction dewatering well structure, a water inlet is provided on one side of the sedimentation tank, and a water outlet is provided on the other side of the sedimentation tank. The water inlet is connected to the connecting pipe, and the axial position of the water inlet is higher than the axial position of the water outlet.

[0013] The water inlet of the sedimentation tank is connected to the connecting pipe, and the water outlet of the sedimentation tank is connected to the municipal drainage system; when no water flows into the sedimentation tank at one end of the water inlet, the axial position of the water inlet is higher than the axial position of the water outlet to prevent the water in the sedimentation tank from flowing back into the connecting pipe through the water inlet.

[0014] According to the recyclable foundation pit construction dewatering well structure, the sedimentation tank is provided with a slot on the side close to the water inlet, a connecting plate is inserted in the slot, the connecting plate is provided with a guide groove, the guide groove is connected to the water inlet, and the end of the guide groove extends to the top of the cleaning basket.

[0015] When the pump delivers water to the sedimentation tank, the connecting plate is inserted into the slot, and the water flows from the water inlet to the guide groove, and then enters the cleaning basket from the guide groove; wherein, there is a gap between the water flowing from the guide groove into the cleaning basket and the side wall of the cleaning basket, which can prevent the water from flowing directly down the side wall of the cleaning basket, thereby preventing the sediment from accumulating below the water inlet.

[0016] According to the recyclable foundation pit construction dewatering well structure, the cleaning basket is provided with a water outlet at one end close to the water outlet, and a partition is inserted at one side of the cleaning basket close to the water inlet.

[0017] When the sedimentation tank is working, water flows through the diversion groove to the cleaning basket, settles in the cleaning basket, and finally flows into the municipal drainage system from the water outlet and the outlet; when cleaning the sediment in the cleaning basket, lift the cleaning basket, remove the partition and clean the sediment, and remove the partition to facilitate the sediment to flow out from the side of the cleaning basket. In addition, before lifting the cleaning basket, lift the connecting plate first to prevent the diversion groove from hindering the lifting of the cleaning basket.

[0018] According to the recyclable foundation pit construction dewatering well structure, a baffle is provided in the cleaning basket, and overflow grooves are provided on both sides of the baffle.

[0019] The baffle divides the cleaning basket into a first chamber and a second chamber, wherein the first chamber is the chamber between the water inlet and the baffle, and the second chamber is the chamber between the baffle and the water outlet; when water flows into the cleaning basket, it first flows into the first chamber, and most of the mud and sand in the water are statically deposited in the first chamber. When the water level in the first chamber is higher than the bottom of the overflow trough, the water flows from the overflow trough into the second chamber. When the water level in the second chamber is higher than the bottom of the water outlet, the water in the second chamber flows out from the water outlet.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0022] Figure 1 It is a three-dimensional diagram of a recyclable dewatering well structure for foundation pit construction.

[0023] Figure 2 The present invention is a cross-sectional view of a well body of a recyclable dewatering well structure for foundation pit construction.

[0024] Figure 3 A three-dimensional diagram of a sedimentation tank with a dewatering well structure that can be recovered for foundation pit construction.

[0025] Figure 4 The present invention is a stereoscopic diagram of a connecting plate of a recyclable dewatering well structure for foundation pit construction.

[0026] Figure 5 A three-dimensional diagram of a cleaning basket for a recyclable dewatering well structure for foundation pit construction. DETAILED DESCRIPTION

[0027] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0028] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] In the description of the present utility model, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0030] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0031] Reference Figure 1-Figure 5The utility model is a recyclable foundation pit construction dewatering well structure, which includes: a well body 10, the well body 10 includes a steel cage 11, a steel mesh 12, a dense mesh 13, a filter layer 14, a filter material layer 15 and a clay layer 16, the steel cage 11 is arranged in the pile hole, and the steel cage 11 is arranged at intervals with the inner wall of the pile hole, the steel mesh 12 is wound around the steel cage 11, the dense mesh 13 is wound around the steel mesh 12, the filter layer 14 is located at the bottom of the steel cage 11, and the filter material layer 15 is wound around the dense mesh The net 13, the clay layer 16 is located on the top of the filter material layer 15 and is wound around the dense mesh 13, and the top surface of the clay layer 16 is at the same height as the ground; the connecting component 20, the connecting component 20 includes a connecting head 21 and a connecting pipe 22, the connecting head 21 is located on the top of the well body 10, a pump is arranged in the connecting head 21, the outlet end of the pump is connected to the connecting pipe 22, and the inlet end of the pump is connected to a water inlet pipe located on the inner side of the well body 10; the sedimentation component 30, the sedimentation component 30 is connected to the connecting pipe 22.

[0032] Specifically, when installing a precipitation well, a pile hole is dug underground using a drilling rig, the wire mesh 12 is fixed to the outside of the steel cage 11, and the dense mesh 13 is fixed to the outside of the wire mesh 12. At this time, the steel cage 11, the wire mesh 12 and the dense mesh 13 form a skeleton, and the skeleton is placed in the pile hole. The skeleton and the inner wall of the pile hole are arranged at intervals, and a filter layer 14 is filled at the bottom of the skeleton. The filter material layer 15 is filled in the gap between the skeleton and the pile hole, and a clay layer 16 is set between the top of the filter material layer 15 and the ground. After the well body 10 is installed, a connector 21 is installed on the top of the well body 10, and the connector 21 is connected to the municipal drainage system using a connecting pipe 22, and a sedimentation component 30 is set at the interface of the municipal drainage system; when the groundwater level is higher than the bottom of the well body 10, the groundwater enters the well body 10 through the filter layer 14 and the skeleton in turn.

[0033] Optionally, the steel cage 11 includes main bars 111 and stirrups 112 , wherein a plurality of main bars 111 are vertically arranged, and the stirrups 112 are wound around the plurality of main bars 111 and connected to each of the main bars 111 .

[0034] Optionally, the sedimentation assembly 30 includes a sedimentation tank 31 and a cleaning basket 32 ​​, and the cleaning basket 32 ​​is located in the sedimentation tank 31 .

[0035] Optionally, a water inlet 311 is provided on one side of the sedimentation tank 31 , and a water outlet 312 is provided on the other side of the sedimentation tank 31 . The water inlet 311 is connected to the connecting pipe 22 , and the axial position of the water inlet 311 is higher than the axial position of the water outlet 312 .

[0036] Optionally, the sedimentation tank 31 is provided with a slot 313 on one side close to the water inlet 311 , a connecting plate 314 is inserted into the slot 313 , the connecting plate 314 is provided with a guide groove 315 , the guide groove 315 is connected to the water inlet 311 , and the end of the guide groove 315 extends to the top of the cleaning basket 32 ​​.

[0037] Optionally, the cleaning basket 32 ​​is provided with a water outlet 321 at one end close to the water outlet 312 , and a partition plate 322 is inserted at one side of the cleaning basket 32 ​​close to the water inlet 311 .

[0038] Optionally, a baffle 323 is disposed in the cleaning basket 32 ​​, and overflow grooves 324 are disposed on both sides of the baffle 323 .

[0039] Specifically, when installing a precipitation well, the steel cage 11, the steel mesh 12, the dense mesh 13 and other structures are fixed at corresponding positions to form a skeleton, the skeleton is placed in a pre-set pile hole, the filter layer 14 is filled at the bottom of the skeleton, the filter material layer 15 is filled in the gap between the skeleton and the pile hole, and a clay layer 16 is set between the top of the filter material layer 15 and the ground. After the well body 10 is installed, a connector 21 is installed on the top of the well body 10, and the connector 21 is connected to the municipal drainage system using a connecting pipe 22, and a sedimentation tank 31 is set at the interface of the municipal drainage system; a pump is set in the connector 21, and the well body 1 0 is provided with a water inlet pipe, the inlet end of the pump is connected with the water inlet pipe, and the outlet end of the pump is connected with the connecting pipe 22. When the precipitation well is working, the cleaning basket 32 ​​is placed in the sedimentation tank 31, and the groundwater passes through the filter layer 14 and the skeleton in turn into the well body 10. The pump is started, and the water in the well body 10 passes through the water inlet pipe, the pump and the connecting pipe 22 in turn into the cleaning basket 32, and the silt in the water is statically deposited in the cleaning basket 32; when cleaning the silt in the cleaning basket 32, the cleaning basket 32 ​​is lifted, and the partition 322 is pulled out after the cleaning basket 32 ​​is lifted, and the silt can be cleaned from the side of the cleaning basket 32 ​​at this time.

[0040] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A recyclable foundation pit construction dewatering well structure, arranged in a pile hole under the ground, characterized in that: include: A well body, the well body comprising a steel cage, a steel mesh, a dense mesh, a filter layer, a filter material layer and a clay layer, the steel cage being arranged in the pile hole, and the steel cage being spaced apart from the inner wall of the pile hole, the steel mesh being wound around the steel cage, the dense mesh being wound around the steel mesh, the filter layer being located at the bottom of the steel cage, the filter material layer being wound around the dense mesh, the clay layer being located at the top of the filter material layer and being wound around the dense mesh, and the top surface of the clay layer being at the same height as the ground; A connection assembly, the connection assembly comprising a connection head and a connection pipe, the connection head being located at the top of the well body, a water pump being arranged in the connection head, the outlet end of the water pump being connected to the connection pipe, and the inlet end of the water pump being connected to a water inlet pipe located inside the well body; A sedimentation component is connected to the connecting pipe.

2. A recyclable foundation pit construction dewatering well structure according to claim 1, characterized in that: The steel cage comprises main bars and stirrups, wherein a plurality of main bars are vertically arranged, and the stirrups are wound around the plurality of main bars and connected to each of the main bars.

3. The recyclable foundation pit construction dewatering well structure according to claim 1 is characterized in that: The sedimentation assembly comprises a sedimentation tank and a cleaning basket, wherein the cleaning basket is located in the sedimentation tank.

4. A recyclable foundation pit construction dewatering well structure according to claim 3, characterized in that: A water inlet is arranged on one side of the sedimentation tank, and a water outlet is arranged on the other side of the sedimentation tank. The water inlet is connected with the connecting pipe, and the axial position of the water inlet is higher than the axial position of the water outlet.

5. A recyclable foundation pit construction dewatering well structure according to claim 4, characterized in that: The sedimentation tank is provided with a card slot on one side close to the water inlet, a connecting plate is inserted in the card slot, the connecting plate is provided with a guide groove, the guide groove is connected with the water inlet, and the end of the guide groove extends to the top of the cleaning basket.

6. A recyclable foundation pit construction dewatering well structure according to claim 5, characterized in that: The cleaning basket is provided with a water outlet at one end close to the water outlet, and a partition is inserted at one side of the cleaning basket close to the water inlet.

7. The recoverable foundation pit construction dewatering well structure according to claim 3 is characterized in that: A baffle is arranged in the cleaning basket, and overflow grooves are arranged on both sides of the baffle.

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