Foundation pit surrounding soil deformation control device

Abstract

The utility model belongs to the technical field of foundation pit construction, and discloses a foundation pit surrounding soil deformation control device which comprises a water storage pond, a dewatering well, a suction module, a recharge well, an injection module and the like. The suction module communicates with the water storage pond and the dewatering well. The multiple recharge wells are arranged between the foundation pit and the building at intervals. The water levels in the multiple recharge wells are gradually reduced in the direction from the building to the foundation pit, and the water level in each recharge well is higher than the water level in the dewatering well. The multiple injection modules are in one-to-one correspondence with the multiple recharge wells, and the injection modules communicate with the water storage pond and the corresponding recharge wells. And water level detection modules are arranged in the recharge well and the dewatering well. The pressure detection module is arranged on the side wall of the foundation pit and used for detecting the excavation depth of the foundation pit. The device can reduce the water level difference between the adjacent recharge wells and the water level difference between the recharge wells and the dewatering wells, the piping phenomenon is avoided, and the stability of a building is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation pit construction, in particular to a soil deformation control device around a foundation pit. Background Art

[0002] During foundation pit construction, groundwater near the foundation pit will continuously seep into the foundation pit. In order to avoid the instability and collapse of the foundation pit slope, prevent the change of groundwater level from affecting the stability of buildings around the foundation pit, and ensure construction safety, it is necessary to carry out foundation pit dewatering treatment in a timely manner.

[0003] The existing dewatering treatment method for foundation pits usually sets up dewatering wells in the foundation pit to divert the groundwater that seeps into the foundation pit, and sets up recharge wells around the buildings to replenish the groundwater and maintain the stability of the groundwater level of the buildings around the foundation pit. However, in the existing treatment method, usually only a single recharge well is set up around the building, and the coverage area is relatively small. It cannot fully meet the control requirements of the groundwater level during the foundation pit excavation process, and cannot effectively prevent the excessive drop of groundwater, thereby affecting the stability of the surrounding buildings. In addition, in order to meet the stability of the groundwater level, a large amount of groundwater needs to be added to the single recharge well, resulting in a large difference in water levels between the recharge well and the dewatering well, which is very likely to cause pipe bursts, causing local instability or collapse of the building. Utility Model Content

[0004] The purpose of the utility model is to provide a soil deformation control device around the foundation pit, which can replenish groundwater in time, reduce the impact of groundwater level fluctuations on surrounding buildings, and ensure the stability of the buildings. In addition, it can also reduce the water level difference between the recharge well and the precipitation well, avoid pipe bursts, ensure the stability of the soil, and avoid local instability or collapse of the building.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A device for controlling soil deformation around a foundation pit is provided, comprising:

[0007] water storage tanks;

[0008] There is at least one precipitation well, and the precipitation well is configured to be set in the foundation pit;

[0009] A suction module, one end of which is in communication with the inner cavity of the water storage tank, and the other end of which is in communication with the precipitation well;

[0010] There are multiple recharge wells, and the multiple recharge wells are spaced between the foundation pit and the building, and the building is spaced apart from the foundation pit; along the direction from the building to the foundation pit, the water level in the multiple recharge wells gradually decreases, and the water level in each recharge well is higher than the water level in the dewatering well;

[0011] Injection modules are provided in plurality, and the plurality of injection modules correspond one to one with the plurality of reinjection wells. The injection modules are connected to the water storage tank and the corresponding reinjection wells, and are used to inject water in the water storage tank into the reinjection wells;

[0012] A water level detection module is provided in each of the recharge wells and the dewatering wells;

[0013] A pressure detection module is provided on the side wall of the foundation pit, and is used to detect the excavation depth of the foundation pit;

[0014] A control module is communicatively connected with the suction module, the injection module, the water level detection module and the pressure detection module.

[0015] Optionally, the water level detection module includes a housing, a reel, a connecting member and a floating member;

[0016] The shell is arranged on the inner wall of the precipitation well or the inner wall of the recharge well, the winding shaft is rotatably arranged in the shell, one end of the connecting member is connected to the floating member, and the other end is wound on the winding shaft, the floating member floats on the water surface in the precipitation well or the water surface in the recharge well, and the floating member can drive the connecting member to unwind on the winding shaft.

[0017] Optionally, the suction module includes a first suction pipe, a suction mechanism and a second suction pipe connected in sequence, the end of the first suction pipe away from the suction mechanism is connected to the inner cavity of the water storage tank, the end of the second suction pipe away from the suction mechanism is connected to the precipitation well, and the control module is communicatively connected to the suction mechanism.

[0018] Optionally, the injection module includes a first injection pipe, an injection mechanism and a second injection pipe that are connected in sequence, the end of the first injection pipe away from the injection mechanism is connected to the inner cavity of the water storage tank, the end of the second injection pipe away from the injection mechanism is connected to the recharge well, and the control module is communicatively connected to the injection mechanism.

[0019] Optionally, the water tank is provided with a first connecting port and a second connecting port; the first suction pipe is inserted into the first connecting port of the water tank, and a first sealing member is sandwiched between the first suction pipe and the water tank; the second suction pipe is inserted into the second connecting port of the water tank, and a second sealing member is sandwiched between the second suction pipe and the water tank.

[0020] Optionally, the upper end of the recharge well is higher than the ground.

[0021] Optionally, the foundation pit dewatering control device further includes a protective member, and a plurality of the protective members are provided. The plurality of protective members are buckled one-to-one at the wellheads of the plurality of the recharge wells, and each of the protective members is provided with a through hole, and the injection module is connected to the recharge well through the through hole.

[0022] Optionally, the pressure detection module includes a plurality of earth pressure gauges, which are arranged in a plurality of rows along the circumference of the foundation pit, and in each row, the plurality of earth pressure gauges are arranged in a vertically spaced arrangement.

[0023] Optionally, the foundation pit dewatering control device further includes a supporting structure, the supporting structure is arranged on the side wall of the foundation pit, and the soil pressure gauge is arranged on the supporting structure.

[0024] Optionally, the installation height of the water storage tank is higher than the wellhead height of the recharge well.

[0025] Beneficial effects of the utility model:

[0026] The utility model provides a soil deformation control device around a foundation pit, which mainly includes a water storage tank, a dewatering well, multiple recharge wells, a suction module, and multiple injection modules. According to the foundation pit excavation depth detected by the pressure detection module, the control module controls the suction module to pump groundwater in the dewatering well into the water storage tank until the groundwater level drops below the foundation pit excavation surface. At the same time, the control module controls the injection module to sequentially inject the groundwater in the water storage tank into the multiple recharge wells. When the water level detection module in the recharge well detects that the groundwater level in the recharge well closest to the building is the same as the original groundwater level, the control module controls the injection module to stop working.

[0027] By installing multiple recharge wells, excessive groundwater drawdown can be effectively controlled, groundwater can be replenished promptly, groundwater level fluctuations can be reduced, the impact on surrounding buildings can be minimized, and building stability can be ensured. Furthermore, installing multiple recharge wells allows for multiple, staged recharges of groundwater. The gradual decrease in groundwater levels within these recharge wells can gradually reduce the difference in water levels between adjacent recharge wells and between recharge wells and dewatering wells. This can prevent piping, ensure soil stability, and avoid localized instability or collapse that could impact the structural safety of buildings. Furthermore, installing multiple recharge wells allows for flexible access to existing ground equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic structural diagram of a soil deformation control device around a foundation pit provided by an embodiment of the present utility model;

[0029] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0030] In the picture:

[0031] 10. Foundation pit; 20. Building;

[0032] 1. Water storage tank;

[0033] 2. Precipitation wells;

[0034] 3. Suction module; 31. First suction pipe; 32. Suction mechanism; 33. Second suction pipe;

[0035] 4. Recharge well;

[0036] 5. Injection module; 51. First injection pipe; 52. Injection mechanism; 53. Second injection pipe;

[0037] 6. Water level detection module; 61. Housing; 62. Connector; 63. Floating member;

[0038] 7. Pressure detection module; 71. Soil pressure gauge; 72. Support structure. DETAILED DESCRIPTION

[0039] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0040] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0041] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0042] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are used to refer to positions or locations based on the positions or locations shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0043] This embodiment provides a device for controlling soil deformation around a foundation pit. Figure 1 and Figure 2 As shown, the soil deformation control device around the foundation pit includes a water storage tank 1, a dewatering well 2, a suction module 3, a recharge well 4, an injection module 5, a water level detection module 6, a pressure detection module 7 and a control module, which can reduce the water level difference between the recharge well 4 and the dewatering well 2, avoid pipe bursts, ensure the stability of the foundation pit 10, avoid local instability and collapse that affects the structural safety of the building 20, and can replenish the groundwater level in time, reduce the impact of groundwater level fluctuations on the surrounding buildings 20, and ensure the stability of the building 20.

[0044] There is at least one dewatering well 2, which is configured to be set in the foundation pit 10. One end of the suction module 3 is connected to the inner cavity of the water storage tank 1, and the other end is connected to the dewatering well 2. The suction module 3 is used to pump the groundwater in the dewatering well 2 into the water storage tank 1, thereby lowering the groundwater level in the foundation pit 10 and facilitating the excavation of the foundation pit 10. Figure 1 The foundation pit 10 and the building 20 are spaced apart, and a plurality of recharge wells 4 are provided, and the plurality of recharge wells 4 are spaced apart between the foundation pit 10 and the building 20. Along the direction from the building 20 to the foundation pit 10, the water level in the plurality of recharge wells 4 gradually decreases, and the water level in each recharge well 4 is higher than the water level in the precipitation well 2, which can gradually reduce the water level difference between two adjacent recharge wells 4 and between the recharge well 4 and the precipitation well 2, thereby preventing pipe bursts. There are a plurality of injection modules 5, and the plurality of injection modules 5 correspond one-to-one to the plurality of recharge wells 4. The injection modules 5 connect the water storage tank 1 and the corresponding recharge well 4, and are used to inject water in the water storage tank 1 into the recharge well 4.

[0045] Each recharge well 4 and dewatering well 2 is equipped with a water level detection module 6, which can monitor the water level in the recharge well 4 and dewatering well 2 in real time to ensure timely groundwater replenishment. A pressure detection module 7 is installed on the side wall of the foundation pit 10. The soil pressure within the foundation pit 10 detected by the pressure detection module 7 can be used to determine the depth of the soil layer, thereby allowing the pressure detection module 7 to detect the excavation depth of the foundation pit 10. The control module is communicatively connected to the suction module 3, injection module 5, water level detection module 6, and pressure detection module 7 to obtain detection information from the corresponding modules or control the operation of the corresponding modules.

[0046] According to the excavation depth of the foundation pit 10 detected by the pressure detection module 7, the control module controls the suction module 3 to pump the groundwater in the dewatering well 2 into the water storage tank 1 until the groundwater level drops below the excavation surface of the foundation pit 10. At the same time, the control module controls the injection module 5 to inject the groundwater in the water storage tank 1 into multiple recharge wells 4 in sequence. When the water level detection module 6 in the recharge well 4 detects that the groundwater level in the recharge well 4 closest to the building 20 is the same as the original groundwater level, the control module controls the injection module 5 to stop working.

[0047] By providing multiple recharge wells 4, excessive groundwater drawdown can be effectively controlled, groundwater can be replenished in a timely manner, groundwater level fluctuations can be reduced, the impact on surrounding buildings 20 can be minimized, and the stability of buildings 20 can be ensured. Furthermore, providing multiple recharge wells 4 allows for multiple, staged recharge of groundwater, gradually reducing the groundwater level within the multiple recharge wells 4. This can gradually reduce the water level difference between adjacent recharge wells 4 and between the recharge wells 4 and the precipitation well 2, thereby preventing piping, ensuring soil stability, and avoiding local instability or collapse that could affect the structural safety of buildings 20. Furthermore, providing multiple recharge wells 4 allows for flexible avoidance of existing ground equipment.

[0048] In this embodiment, there are two precipitation wells 2 and four recharge wells 4. In other embodiments, one or more precipitation wells 2 and two, three or four or more recharge wells 4 can be provided according to actual needs, which is not limited here.

[0049] Alternatively, as Figure 1 and Figure 2 As shown, the water level detection module 6 includes a housing 61, a reel, a connector 62, and a float 63. The housing 61 is disposed on the inner wall of the precipitation well 2 or the inner wall of the recharge well 4, and the reel is rotatably disposed within the housing 61. One end of the connector 62 is connected to the float 63, and the other end is wound around the reel. The float 63 floats on the water surface in the precipitation well 2 or the water surface in the recharge well 4, and the float 63 can drive the connector 62 to unwind on the reel. When the water level in the precipitation well 2 or the recharge well 4 drops or rises, the float 63 will drop or rise with the water level change. Driven by the float 63, the connector 62 will be released or reeled onto the reel. By detecting the reeling length of the connector 62 on the reel, the water level in the precipitation well 2 or the recharge well 4 can be detected. The structure is simple, the operation is convenient, and the water level changes can be monitored in a timely manner, which is conducive to timely replenishment of groundwater and preventing excessive groundwater drop from affecting the stability of surrounding buildings 20.

[0050] It should be noted that the height of the shell 61 is higher than the highest water level in the precipitation well 2 or the recharge well 4 .

[0051] For example, the water level detection module 6 includes a drawstring level gauge, which is a mature technology and will not be described in detail here.

[0052] Alternatively, as Figure 1 As shown, the suction module 3 includes a first suction pipe 31, a suction mechanism 32, and a second suction pipe 33, which are connected in sequence. The end of the first suction pipe 31 away from the suction mechanism 32 is connected to the inner cavity of the water storage tank 1, and the end of the second suction pipe 33 away from the suction mechanism 32 is connected to the precipitation well 2. The control module is in communication with the suction mechanism 32. When it is necessary to pump groundwater in the precipitation well 2, the control module controls the start-up of the suction mechanism 32, which extracts the groundwater in the precipitation well 2 and transports the groundwater to the suction cavity of the suction mechanism 32 via the first suction pipe 31. Thereafter, the groundwater is pumped into the water storage tank 1 via the second suction pipe 33, thereby lowering the groundwater level in the foundation pit 10 and facilitating the excavation of the foundation pit 10.

[0053] Exemplarily, the suction mechanism 32 includes a water pump. In other embodiments, a suction pump or a screw pump can be selected as the suction mechanism 32 according to actual needs, which is not limited here.

[0054] Alternatively, as Figure 1 As shown, the injection module 5 includes a first injection pipe 51, an injection mechanism 52, and a second injection pipe 53 that are connected in sequence. The end of the first injection pipe 51 away from the injection mechanism 52 is connected to the inner cavity of the water storage tank 1, and the end of the second injection pipe 53 away from the injection mechanism 52 is connected to the recharge well 4. The control module is in communication with the injection mechanism 52. When it is necessary to replenish groundwater, the control module controls the start-up of the injection mechanism 52, and the injection mechanism 52 extracts groundwater from the water storage tank 1 and transports the groundwater to the injection cavity of the injection mechanism 52 through the first injection pipe 51. Thereafter, the groundwater is injected into the recharge well 4 through the second injection pipe 53, thereby replenishing groundwater in time between the building 20 and the foundation pit 10, maintaining the stability of the groundwater level, reducing the impact of groundwater level fluctuations on the soil, avoiding pipe bursts, and ensuring the overall stability of the foundation pit 10 and the building 20.

[0055] Exemplarily, the injection mechanism 52 includes a water pump. In other embodiments, a suction pump or a screw pump can be selected as the injection mechanism 52 according to actual needs, which is not limited here.

[0056] In this embodiment, the first suction pipe 31, the second suction pipe 33, the first injection pipe 51, and the second injection pipe 53 are all flexible pipes. Flexible pipes have good deformability and can be flexibly deformed according to the construction site. This facilitates the insertion of the first suction pipe 31 and the first injection pipe 51 into the dewatering well 2 and the recharge well 4, and the insertion of the second suction pipe 33 and the second injection pipe 53 into the water storage tank 1, thereby smoothly completing the groundwater extraction and injection operations.

[0057] Optionally, the water tank 1 is provided with a first connecting port and a second connecting port. The first suction pipe 31 is inserted into the first connecting port of the water tank 1, and a first sealing member is sandwiched between the first suction pipe 31 and the water tank 1. The second suction pipe 33 is inserted into the second connecting port of the water tank 1, and a second sealing member is sandwiched between the second suction pipe 33 and the water tank 1. By providing the first sealing member and the second sealing member, the sealing of the connection between the first suction pipe 31 and the water tank 1 and between the second suction pipe 33 and the water tank 1 can be enhanced, ensuring that the connection is tight and leak-proof, preventing groundwater from seeping from the connection, avoiding waste of water resources and pollution to the surrounding environment, and ensuring the smooth progress of water pumping and injection.

[0058] like Figure 1 As shown, the upper end of the recharge well 4 is higher than the ground. When setting up the recharge well 4, the upper end of the recharge well 4 (i.e., the wellhead of the recharge well 4) needs to be raised above the ground to ensure that the wellhead height is higher than the ground, thereby effectively preventing sewage or other surface water sources from flowing into the well, thereby maintaining the cleanliness of the water quality in the well and the recharge effect, ensuring the quality of the recharge water, and preventing groundwater from being polluted. In addition, raising the upper end of the recharge well 4 above the ground can reduce the risk of pedestrians and debris falling into the well, improve the safety of construction and use, and facilitate construction personnel to install, debug and maintain equipment in the well. At the same time, it is also convenient to monitor the changes in water level and water quality in the well, and to adjust the recharge plan in time to ensure the smooth progress of the foundation pit 10 dewatering project.

[0059] Optionally, the dewatering control device for the foundation pit 10 further includes a protective member. A plurality of protective members are provided, and the plurality of protective members are buckled in a one-to-one correspondence with the wellheads of the plurality of recharge wells 4. Each protective member is provided with a through hole, through which the injection module 5 is connected to the recharge well 4. By providing a protective member at the wellhead of the recharge well 4, surface debris, such as garbage, soil, and stones, can be prevented from falling into the recharge well 4, thereby avoiding clogging the injection module 5 and affecting the recharge effect. At the same time, the protective member can also effectively isolate rainwater, further preventing groundwater contamination and improving the safety of construction and use.

[0060] Alternatively, as Figure 1 As shown, the pressure detection module 7 includes multiple earth pressure gauges 71. These gauges 71 are arranged in multiple rows along the circumference of the foundation pit 10, and within each row, the gauges 71 are arranged vertically and spaced apart. After excavation of the foundation pit 10, the soil layer height decreases, causing some of the earth pressure gauges 71 to leak out of the soil layer. Consequently, the soil pressure values ​​measured by these gauges 71 change. The detection results of the earth pressure gauges 71 indicate the current excavated soil layer height, which is then transmitted to the control module.

[0061] When the difference between the soil layer height and the water level height in the precipitation well 2 is less than 0.5m, the control module sends an instruction to the suction module 3, so that the suction module 3 pumps the groundwater in the precipitation well 2 into the water storage tank 1. At the same time, the control module sends an instruction to the injection module 5, so that the injection module 5 pumps the groundwater in the water storage tank 1 into the recharge well 4, until the water level detection module 6 detects that the difference between the water level in the precipitation well 2 and the soil layer height is 0.5m to 1m, and the water level in the recharge well 4 closest to the building 20 is the same as the water level before excavation, the control module sends an instruction to stop the suction module 3 and the injection module 5.

[0062] In this embodiment, the control module includes an STM32 controller. In other embodiments, a PLC controller or the like can be selected as the control module according to actual needs, which is not limited here.

[0063] Exemplarily, two rows of earth pressure gauges 71 are provided, each row including seven earth pressure gauges 71. In other embodiments, more than two rows of earth pressure gauges 71 may be provided according to actual needs, each row including two to six or more earth pressure gauges 71, which is not limited here.

[0064] Alternatively, as Figure 1 As shown, the dewatering control device for foundation pit 10 also includes a support structure 72. This support structure 72 is installed on the sidewall of foundation pit 10, and an earth pressure gauge 71 is mounted on this support structure 72. The support structure 72 can withstand loads from the rock and soil, groundwater, construction machinery, and the surrounding environment. It effectively supports and secures the surrounding rock and soil, preventing soil loosening and ensuring structural stability and construction safety. Furthermore, the support structure 72 provides an installation base for the earth pressure gauge 71, facilitating its placement.

[0065] Optionally, the installation height of the water tank 1 is higher than the wellhead height of the recharge well 4. When the soil deformation control device around the foundation pit is arranged, the installation height of the water tank 1 is higher than the wellhead height of the recharge well 4, that is, the bottom elevation of the water tank 1 is ensured to be higher than the wellhead elevation of the recharge well 4. When groundwater is replenished into the recharge well 4, the water flow can flow to the recharge well 4 under the action of gravity, thereby reducing the energy consumption and operating costs of the injection module 5 and improving the recharge efficiency. The structure is simple and easy to operate.

[0066] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A soil deformation control device around a foundation pit, characterized in that: include: Water storage tank (1); At least one dewatering well (2) is provided, and the dewatering well (2) is configured to be provided in the foundation pit (10); A suction module (3), one end of the suction module (3) is in communication with the inner cavity of the water storage tank (1), and the other end is in communication with the precipitation well (2); A plurality of recharge wells (4) are provided, wherein the plurality of recharge wells (4) are spaced apart between the foundation pit (10) and the building (20), and the building (20) and the foundation pit (10) are spaced apart; along the direction from the building (20) to the foundation pit (10), the water level in the plurality of recharge wells (4) gradually decreases, and the water level in each recharge well (4) is higher than the water level in the dewatering well (2); A plurality of injection modules (5) are provided, wherein the plurality of injection modules (5) correspond one-to-one to the plurality of reinjection wells (4), and the injection modules (5) are connected to the water storage tank (1) and the corresponding reinjection wells (4) and are used to inject water in the water storage tank (1) into the reinjection wells (4); A water level detection module (6), each of the recharge well (4) and the dewatering well (2) is provided with the water level detection module (6); A pressure detection module (7) is arranged on a side wall of the foundation pit (10), and the pressure detection module (7) is used to detect the excavation depth of the foundation pit (10); A control module is communicatively connected to the suction module (3), the injection module (5), the water level detection module (6), and the pressure detection module (7).

2. The soil deformation control device around the foundation pit according to claim 1, characterized in that: The water level detection module (6) comprises a housing (61), a reel, a connecting member (62) and a floating member (63); The shell (61) is arranged on the inner wall of the precipitation well (2) or the inner wall of the recharge well (4), the reel is rotatably arranged in the shell (61), one end of the connecting member (62) is connected to the floating member (63), and the other end is wound on the reel, the floating member (63) floats on the water surface in the precipitation well (2) or the water surface in the recharge well (4), and the floating member (63) can drive the connecting member (62) to unwind on the reel.

3. The soil deformation control device around the foundation pit according to claim 1, characterized in that: The suction module (3) comprises a first suction pipe (31), a suction mechanism (32) and a second suction pipe (33) which are connected in sequence, wherein the end of the first suction pipe (31) away from the suction mechanism (32) is connected to the inner cavity of the water storage tank (1), and the end of the second suction pipe (33) away from the suction mechanism (32) is connected to the precipitation well (2), and the control module is communicatively connected to the suction mechanism (32).

4. The soil deformation control device around the foundation pit according to claim 3, characterized in that: The injection module (5) comprises a first injection pipe (51), an injection mechanism (52) and a second injection pipe (53) which are connected in sequence, wherein one end of the first injection pipe (51) away from the injection mechanism (52) is connected to the inner cavity of the water storage tank (1), and one end of the second injection pipe (53) away from the injection mechanism (52) is connected to the recharge well (4), and the control module is in communication with the injection mechanism (52).

5. The soil deformation control device around the foundation pit according to claim 4, characterized in that: The water tank (1) is provided with a first connecting port and a second connecting port; the first suction pipe (31) is inserted into the first connecting port of the water tank (1), and a first sealing member is sandwiched between the first suction pipe (31) and the water tank (1); the second suction pipe (33) is inserted into the second connecting port of the water tank (1), and a second sealing member is sandwiched between the second suction pipe (33) and the water tank (1).

6. The soil deformation control device around a foundation pit according to any one of claims 1 to 5, characterized in that: The upper end of the recharge well (4) is higher than the ground.

7. The soil deformation control device around a foundation pit according to any one of claims 1 to 5, characterized in that: The foundation pit (10) dewatering control device further comprises a protective member, wherein a plurality of the protective members are provided, and the plurality of protective members are buckled in a one-to-one correspondence with the wellheads of the plurality of reinjection wells (4), and each of the protective members is provided with a through hole, and the injection module (5) is connected to the reinjection well (4) through the through hole.

8. The soil deformation control device around a foundation pit according to any one of claims 1 to 5, characterized in that: The pressure detection module (7) comprises a plurality of earth pressure gauges (71), wherein the plurality of earth pressure gauges (71) are arranged in a plurality of rows at intervals along the circumference of the foundation pit (10), and the plurality of earth pressure gauges (71) in each row are arranged at intervals along the vertical direction.

9. The soil deformation control device around the foundation pit according to claim 8, characterized in that: The foundation pit (10) dewatering control device further comprises a supporting structure (72), wherein the supporting structure (72) is arranged on the side wall of the foundation pit (10), and the soil pressure gauge (71) is arranged on the supporting structure (72).

10. The soil deformation control device around a foundation pit according to any one of claims 1 to 5, characterized in that: The installation height of the water storage tank (1) is higher than the wellhead height of the recharging well (4).

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