Well wall protection device of foundation pit water collecting well

Abstract

The utility model discloses a well wall protection device of a foundation pit water-collecting well, which comprises an open trench arranged along the circumferential direction of the bottom edge of a foundation pit, a water-collecting well arranged at the bottom of the open trench, a water drainage pipe extending into the water-collecting well and a water suction pump arranged on the side surface of the top of the foundation pit and used for being connected with the water drainage pipe, a protection device with the gravity center pressed towards the well wall is arranged in the water collecting well and comprises four protection cylinders attached to the well wall, the inlet end of the drainage pipe is located among the four protection cylinders, filling cavities are formed in the protection cylinders, and filler is arranged in the filling cavities. The stability of the water-collecting well can be effectively enhanced, the problem that the well wall is prone to collapse when rainwater and underground water are gathered into the water-collecting well for a long time is solved, silt entering the water inlet well is reduced, the risk that the drainage pipe is blocked is reduced, and the drainage efficiency is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation pit drainage, in particular to a well wall protection device for a foundation pit water collection well. Background Art

[0002] Foundation pit drainage refers to the work of precipitation to ensure that the foundation pit can be constructed under dry conditions and to prevent the slope from becoming unstable when the groundwater level is higher than the bottom of the excavation during the excavation of the foundation pit and the groundwater will continue to seep into the pit. The existing foundation pit drainage method mainly uses open ditch plus water collection well precipitation. An open ditch is opened on the side of the foundation pit, and a water collection well is opened at the bottom of the open ditch to collect groundwater in the water collection well, and then the groundwater in the water collection well is pumped away by a water pump. However, when the groundwater flows into the water collection well, the wall of the water collection well is a soil layer structure. In the process of rainwater or underground water flowing into the water collection well for a long time, the wall of the water collection well is prone to collapse. The stability of the water collection well is poor, and the mud and sand produced by the collapse are easy to block the drainage pipe of the water pump, affecting the drainage efficiency of the water collection well. Utility Model Content

[0003] The purpose of the utility model is to provide a well wall protection device for a foundation pit water collection well, which can effectively enhance the stability of the water collection well and avoid the problem of well wall collapse caused by long-term influx of rainwater and groundwater into the water collection well. This is conducive to reducing the entry of mud and sand into the water inlet well, reducing the risk of drainage pipe being blocked, and ensuring drainage efficiency.

[0004] In order to solve the above technical problems, the utility model adopts the following solutions:

[0005] A well wall protection device for a foundation pit sump, comprising an open ditch circumferentially arranged along the bottom edge of the foundation pit, a sump opened at the bottom of the open ditch, a drainage pipe extending into the sump, and a water pump installed on the top side of the foundation pit for connecting to the drainage pipe. A protection device with its center of gravity pressed against the well wall is provided inside the sump, the protection device comprises four protection cylinders fitted to the well wall, an inlet end of the drainage pipe is located between the four protection cylinders, a filling cavity is provided inside the protection cylinder, and a filling material is provided in the filling cavity.

[0006] Due to the adoption of the above technical solution, the setting of the open ditch can collect the accumulated water along the circumferential edge of the bottom of the foundation pit. When the accumulated water in the open ditch reaches a certain level, it will be concentrated through the water collection well. The water collection well is located at the bottom of the open ditch to ensure that the accumulated water can flow in smoothly. The drainage pipe extends into the water collection well and is responsible for draining the accumulated water in the water collection well. The inlet end of the drainage pipe is located between the four protective cylinders. This design not only ensures the drainage efficiency, but also avoids the water flow from directly impacting the well wall. The protective device consists of four protective cylinders that fit the well wall. These four protective cylinders form a protective barrier that can have It can effectively resist the impact of external pressure and water flow. The center of gravity of the protective tube is pressed against the well wall, which can effectively support and protect the well wall and avoid the problem of collapse caused by long-term erosion of rainwater. There is a filling cavity inside the protective tube, and the filling cavity is filled with fillers. The fillers can enhance the weight of the protective tube, thereby improving the supporting and protective ability of the well wall, thereby protecting the well wall from damage. The water pump is installed on the top side of the foundation pit and is used to connect the drainage pipe to pump out the discharged accumulated water. The entire drainage system forms a closed loop, which can effectively remove the accumulated water in the foundation pit and protect the well wall from damage.

[0007] Optionally, the protective tube is a prefabricated concrete structure, the side wall of the protective tube that is in contact with the well wall is a vertical surface, the side wall opposite to the vertical surface is an inclined surface, and the upper end of the protective tube is open and the lower end is closed.

[0008] Optionally, the vertical surface is provided with a plurality of water holes connected with the filling cavity.

[0009] Optionally, the inclined surface is an inclined straight surface, and the cross-section of the protective tube is trapezoidal.

[0010] Optionally, the inclined surface is an inclined arc surface, and the cross-section of the protective tube is hemispherical.

[0011] Optionally, an overflow hole communicating with the filling cavity is provided on the inclined surface, and the overflow hole is adjacent to the upper end of the protective tube.

[0012] Optionally, a protective filter is provided at the opening at the upper end of the protective tube.

[0013] Optionally, the top surface of the protective tube is higher than the top surface of the foundation pit.

[0014] Optionally, a suspended reinforcement is provided between the four protective tubes, and the reinforcement includes a fixed tube, the upper and lower ends of the fixed tube are open, and support rods are distributed in a cross shape around the fixed tube. One end of the support rod away from the fixed tube is fixedly connected to the side wall of the protective tube, and the drain pipe extends into the fixed tube.

[0015] Optionally, a filter screen is provided at the lower end of the fixed cylinder.

[0016] The utility model has the beneficial effects:

[0017] 1. In the utility model, the protective device is composed of four protective tubes that are in contact with the well wall. The four protective tubes form a protective barrier that can effectively resist the impact of external pressure and water flow. The center of gravity of the protective tube is pressed toward the well wall, which can effectively support and protect the well wall and avoid the problem of collapse caused by long-term erosion of rainwater. The protective tube has a filling cavity inside, and the filling cavity is filled with a filler. The filler can enhance the weight of the protective tube, thereby improving the supporting and protective ability of the well wall, thereby protecting the well wall from damage. The water pump is installed on the top side of the foundation pit and is used to connect the drainage pipe to pump out the discharged accumulated water. The entire drainage system forms a closed loop, which can effectively remove the accumulated water in the foundation pit and protect the well wall from damage.

[0018] 2. The protective tube is a prefabricated part, which can save the on-site production process and can be directly installed, saving time and effort. It can also prefabricate suitable protective tubes according to different sizes of sump wells, which is more practical.

[0019] 3. A protective filter is installed at the top of the protective tube to prevent workers from falling in and causing injuries. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model;

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of the protective tube when it is tilted and facing straight;

[0022] Figure 3 It is a schematic diagram of the top view structure of the inclined arc surface;

[0023] Figure 4 It is a top view of the structure of the reinforcement;

[0024] Figure 5 This is the distribution map of water collection wells in the foundation pit;

[0025] Figure 6 This is a bird's-eye view of the distribution of protective tubes in the water collection well.

[0026] Figure numerals: 1-water collection well, 2-protective cylinder, 201-vertical surface, 202-inclined surface, 203-water hole, 204-overflow hole, 205-filling chamber, 3-protective filter, 4-drain pipe, 5-water pump, 6-fixing cylinder, 7-support rod, 8-filter, 9-filler, 10-foundation pit, 11-open ditch, 12-well wall. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below in conjunction with the embodiments and drawings, but the implementation manner of the present invention is not limited thereto.

[0028] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inside", "outside", "front", "back", "top", "bottom", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.

[0029] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "open", "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Example

[0031] A well wall protection device for a foundation pit water collection well, comprising an open ditch 11 circumferentially arranged along the bottom edge of the foundation pit 10, a water collection well 1 opened at the bottom of the open ditch 11, a drainage pipe 4 extending into the water collection well 1, and a water pump 5 installed on the top side of the foundation pit 10 for connecting to the drainage pipe 4. The water collection well 1 is provided with a protection device whose center of gravity is pressed against the well wall 12, and the protection device includes four protection tubes 2 fitted with the well wall 12, the inlet end of the drainage pipe 4 is located between the four protection tubes 2, the protection tube 2 has a filling cavity 205 inside, and the filling cavity 205 has a filler 9.

[0032] In this embodiment, Figure 5 As shown, the open ditch 11 is set up to collect the accumulated water along the circumferential edge of the bottom of the foundation pit 10. When the accumulated water in the open ditch 11 reaches a certain level, it will be collected through the water collection well 1. The water collection well 1 is opened at the bottom of the open ditch 11 to ensure that the accumulated water can flow in smoothly. The drainage pipe 4 extends into the water collection well 1 and is responsible for draining the accumulated water in the water collection well 1. The inlet end of the drainage pipe 4 is located between the four protective tubes 2. This design not only ensures the drainage efficiency, but also avoids the water flow from directly impacting the well wall 12. Figure 6 As shown, the protective device is composed of four protective tubes 2 that fit the well wall 12. The four protective tubes 2 form a protective barrier that can effectively resist the impact of external pressure and water flow. Figure 1As shown, the center of gravity of the protective tube 2 is pressed toward the well wall 12, which can effectively support and protect the well wall 12, and avoid the problem of collapse caused by long-term erosion of rainwater. The protective tube 2 has a filling cavity 205 inside, and the filling cavity 205 is filled with a filler 9. The filler 9 can increase the weight of the protective tube 2, thereby improving the support and protection ability of the well wall 12, thereby protecting the well wall 12 from damage, and can effectively enhance the stability of the water collection well 1, avoiding the problem of easy collapse of the well wall 12 caused by the long-term flow of rainwater and groundwater into the water collection well 1, which is conducive to reducing the entry of sediment into the water intake well, reducing the risk of the drainage pipe 4 being blocked, and ensuring drainage efficiency. The water pump 5 is installed on the top side of the foundation pit 10, which is used to connect the drainage pipe 4 to pump away the derived accumulated water. The entire drainage system forms a closed loop, which can effectively remove the accumulated water in the foundation pit 10 and protect the well wall 12 from damage.

[0033] Furthermore, the protective tube 2 is a prefabricated concrete structure, the side wall of the protective tube 2 that is in contact with the well wall 12 is a vertical surface 201, the side wall opposite to the vertical surface 201 is an inclined surface 202, and the upper end of the protective tube 2 is open and the lower end is closed.

[0034] Specifically, the protective tube 2 is a prefabricated part, which can save the on-site production process and can be directly installed, saving time and effort. The protective tube 2 can also be prefabricated according to the different sizes of the water collection well 1, which is more practical. The side wall of the protective tube 2 that fits the well wall 12 is a vertical surface 201, which enables the protective tube 2 to fit tightly on the well wall 12, enhances the connection stability between the protective tube 2 and the well wall 12, and improves the impact resistance of the overall structure. The side wall opposite to the vertical surface 201 is an inclined surface 202, which helps to guide the water flow so that the water flow can pass more smoothly through the space between the protective tube 2 and enter the drain pipe 4. The inclined surface 202 can also reduce the direct impact of the water flow on the protective tube 2 and reduce the destructive force of the water flow on the protective device. The protective tube 2 is open at the upper end and closed at the lower end, forming a closed space inside the protective tube 2, namely the filling cavity 205. The filling cavity 205 is filled with filler 9 to increase the weight of the protective tube 2 to achieve the best protection effect. The filler 9 can be selected as pebbles or gravel, or water.

[0035] Furthermore, the vertical surface 201 is provided with a plurality of water holes 203 connected with the filling cavity 205. Specifically, the water holes 203 can directly guide the water seeping from the well wall 12 into the filling cavity 205, thereby avoiding the risk of expansion and cracking caused by excessive water pressure in the well wall 12. The inflowing water can also further increase the weight of the protective tube 2, so that the protective tube 2 has a stronger supporting and protective ability for the well wall 12.

[0036] Further, such as Figure 2As shown, the inclined surface 202 is an inclined straight surface, and the cross section of the protective tube 2 is in a trapezoidal shape. Specifically, the inclined straight surface not only allows the water flow to pass through the space between the protective tubes 2 more smoothly, but also reduces the impact of the water flow on the side wall of the protective tube 2, and reduces the destructive force of the water flow on the protective device. The cross section of the protective tube 2 is in a trapezoidal shape, which means that the upper end opening of the protective tube 2 is larger and the lower end is smaller. This design enables the protective tube 2 to better adapt to the shape of the well wall 12 and enhances the fit with the well wall 12. At the same time, the trapezoidal design also increases the structural stability of the protective tube 2, so that it can withstand greater water pressure and impact force.

[0037] Furthermore, the inclined surface 202 is an inclined arc surface, and the cross section of the protective tube 2 is hemispherical.

[0038] Specifically, Figure 3 As shown, the design of the inclined arc surface makes the protective tube 2 more smooth and beautiful in appearance, and also enhances its structural strength. Compared with the inclined straight surface, the inclined arc surface can better disperse the impact of water flow on the protective tube 2, and reduce the damage to the protective tube 2 caused by the pressure and impact force generated by the water flow. This design can also make the water flow through the protective tube 2 more smoothly, reduce the turbulence and eddy current of the water flow, and further reduce the scouring and erosion of the well wall 12. The cross-section of the protective tube 2 is hemispherical, which makes the protective tube 2 round in appearance, which increases the overall stability of the protective tube 2. The hemispherical design can also provide better mechanical support, so that the protective tube 2 can withstand greater pressure and impact force. In addition, the internal space of the hemispherical protective tube 2 is larger, which can accommodate more fillers 9, thereby increasing the protective effect. The filler 9 can be selected according to actual conditions. For example, a material with better shock absorption and buffering properties can be selected to further improve the protective effect of the protective device.

[0039] Furthermore, the inclined surface 202 is provided with an overflow hole 204 connected to the filling cavity 205, and the overflow hole 204 is adjacent to the upper end of the protective tube 2. Specifically, the overflow hole 204 can discharge the excess water in the filling cavity 205 to between the four protective tubes 2. There are gaps between the pebbles or gravel blocks in the filling cavity 205, which can filter some silt or other debris to prevent silt or other debris from entering the drainage pipe 4 and causing blockage. Since the overflow hole 204 is opened on the inclined surface 202, the water overflowing from the filling cavity 205 can quickly flow into the water collection well 1.

[0040] Furthermore, a protective filter screen 3 is provided at the opening of the upper end of the protective tube 2 .

[0041] Specifically, the main function of the protective filter 3 is to prevent large pieces of debris or particulate matter from entering the interior of the protective tube 2, thereby keeping the interior of the protective tube 2 clean and unobstructed. In the environment of the foundation pit 10 water collection well 1, various debris, soil or other particulate matter may enter the protective tube 2 with the water flow. If there is no filter to block it, these debris may clog the protective tube 2 and affect its normal function. At the same time, the protective filter 3 can further filter the water flow, reduce impurities and pollutants in the water, and ensure that the water quality entering the drain pipe 4 is relatively good. This is very important for protecting the normal operation of the drainage system and the water pump 5, and can also extend the service life of these equipment. In addition, the setting of the protective filter 3 can also facilitate cleaning and maintenance. When a lot of debris accumulates on the filter, it can be easily cleaned to keep the filter unobstructed and effective. The protective filter 3 can also prevent workers from stepping on air and falling into it and causing injuries.

[0042] Furthermore, the top surface of the protective tube 2 is higher than the top surface of the foundation pit 10 .

[0043] Specifically, firstly, the top surface of the protective tube 2 is higher than the top surface of the foundation pit 10, which can effectively prevent the debris and soil on the top of the foundation pit 10 from falling directly into the water collection well 1. During the construction or use of the foundation pit 10, there are often various materials and equipment on the top of the foundation pit 10. If there are no such protective measures, these debris can easily enter the water collection well 1 through the wellhead, thereby blocking the drainage system or damaging the equipment. Secondly, the protruding design of the protective tube 2 can also serve as a warning. Since the top surface of the protective tube 2 is higher than the surrounding ground, construction personnel and equipment operators can more easily notice their presence, thereby avoiding accidental collision or damage to the protective device during operation. In addition, the protruding design of the protective tube 2 can also enhance the stability of the wellhead. Since the protective tube 2 itself has a certain weight and volume, they can be more firmly fixed at the wellhead position, reducing the risk of deformation or displacement of the wellhead due to external forces or foundation settlement.

[0044] Furthermore, a suspended reinforcement is provided between the four protective tubes 2, and the reinforcement includes a fixed tube 6, the upper and lower ends of the fixed tube 6 are open, and support rods 7 are distributed in a cross shape around the fixed tube 6. One end of the support rod 7 away from the fixed tube 6 is fixedly connected to the side wall of the protective tube 2, and the drain pipe 4 extends into the fixed tube 6.

[0045] Specifically, Figure 4As shown, the fixed tube 6 in the reinforcement is designed to be open at both ends. This structure allows the fixed tube 6 to be easily connected to the protective tube 2 and the drain pipe 4. At the same time, the fixed tube 6 is cross-shaped with support rods 7 distributed around it. These support rods 7 not only provide support for the fixed tube 6, but also connect the four protective tubes 2 tightly together through fixed connection with the side walls of the protective tube 2 to form a stable overall structure. The design of the support rods 7 not only enhances the connection strength between the protective tubes 2, but also effectively disperses and resists the impact force when subjected to external forces, protecting the well wall 12 from damage. This design makes the entire protective device more stable and reliable when subjected to external forces such as water pressure and impact force. In addition, the drainage pipe 4 extending into the fixed tube 6 not only ensures that the drainage pipe 4 can be stably fixed in the protective device, but also provides additional support and protection for the drainage pipe 4 through the fixed tube 6 to prevent the drainage pipe 4 from deformation or damage when subjected to external forces.

[0046] Furthermore, a filter screen 8 is provided at the lower end of the fixed cylinder 6 .

[0047] Specifically, the main function of the filter 8 is to prevent larger debris or particles in the water collection well 1 from entering the fixed cylinder 6, thereby ensuring that the drainage pipe 4 is unobstructed. In the environment of the water collection well 1 in the foundation pit 10, the water flow may carry various debris. If there is no filter 8 to block it, these debris may block the drainage pipe 4 and affect its drainage efficiency.

[0048] The filter screen 8 at the lower end of the fixed cylinder 6 is designed to effectively intercept these debris and only allow water to pass through. This not only ensures the smooth operation of the drain pipe 4, but also extends the service life of the drain pipe 4 and reduces the maintenance and replacement costs caused by blockage. In addition, the filter screen 8 can also perform preliminary filtration on the water flow entering the fixed cylinder 6 to further reduce impurities and pollutants in the water, which is very important for protecting the normal operation of the subsequent drainage system and the water pump 5, and helps to improve the performance and stability of the entire drainage system.

[0049] The above is only a preferred embodiment of the utility model and does not limit the utility model in any form. According to the technical essence of the utility model, within the spirit and principles of the utility model, any simple modification, equivalent replacement and improvement made to the above embodiment still falls within the protection scope of the technical solution of the utility model.

Claims

1. A well wall protection device for a foundation pit water collection well, comprising an open ditch (11) arranged along the circumferential edge of the bottom of a foundation pit (10), a water collection well (1) opened at the bottom of the open ditch (11), a drainage pipe (4) extending into the water collection well (1), and a water pump (5) installed on the top side of the foundation pit (10) and connected to the drainage pipe (4), characterized in that: The water collection well (1) is provided with a protective device whose center of gravity is pressed against the well wall (12), the protective device comprising four protective cylinders (2) fitted with the well wall (12), the inlet end of the drainage pipe (4) is located between the four protective cylinders (2), the protective cylinder (2) has a filling cavity (205) inside, and the filling cavity (205) has a filler (9) inside.

2. A well wall protection device for a foundation pit water collection well according to claim 1, characterized in that: The protective tube (2) is a prefabricated concrete structure. The side wall of the protective tube (2) that is in contact with the well wall (12) is a vertical surface (201), and the side wall opposite to the vertical surface (201) is an inclined surface (202). The upper end of the protective tube (2) is open and the lower end is closed.

3. A well wall protection device for a foundation pit water collection well according to claim 2, characterized in that: The vertical surface (201) is provided with a plurality of water holes (203) which are in communication with the filling cavity (205).

4. A well wall protection device for a foundation pit water collection well according to claim 2, characterized in that: The inclined surface (202) is an inclined straight surface, and the cross section of the protective tube (2) is in a trapezoidal shape.

5. The well wall protection device for a foundation pit water collection well according to claim 2, characterized in that: The inclined surface (202) is an inclined arc-shaped surface, and the cross section of the protective tube (2) is hemispherical.

6. A well wall protection device for a foundation pit water collection well according to claim 2, characterized in that: An overflow hole (204) communicating with the filling cavity (205) is provided on the inclined surface (202), and the overflow hole (204) is adjacent to the upper end of the protective tube (2).

7. A well wall protection device for a foundation pit water collection well according to claim 2, characterized in that: A protective filter screen (3) is provided at the upper opening of the protective cylinder (2).

8. The well wall protection device for a foundation pit water collection well according to claim 1, characterized in that: The top surface of the protective tube (2) is higher than the top surface of the foundation pit (10).

9. The well wall protection device for a foundation pit water collection well according to claim 1, characterized in that: A suspended reinforcement member is provided between the four protection tubes (2), the reinforcement member comprising a fixed tube (6), the upper and lower ends of the fixed tube (6) are open, support rods (7) are distributed in a cross shape around the fixed tube (6), one end of the support rod (7) away from the fixed tube (6) is fixedly connected to the side wall of the protection tube (2), and the drainage pipe (4) extends into the fixed tube (6).

10. A well wall protection device for a foundation pit water collection well according to claim 9, characterized in that: A filter screen (8) is provided at the lower end of the fixed cylinder (6).

Images