Drainage well structure and its drainage anti-floating basement bottom plate foundation system

Abstract

The application relates to a drainage well structure and a drainage anti-floating basement bottom plate foundation system, wherein the drainage well structure comprises a well body, a water pump and a controller are arranged on the well body, a sliding rod one and a sensing part one are arranged on the well body, a floating block one and a sensing block one are arranged on the sliding rod one, a sliding rod two and a sensing part two are arranged on the well body, and a floating block two and a sensing block two are arranged on the sliding rod two. The time difference from water level rising to starting drainage is shortened, instant perception and active response to underground water level change are realized, instantaneous floating force increase under the bottom plate caused by drainage lag during heavy rain or underground water level sudden rising is reduced, structural cracking or damage of the bottom plate caused by instantaneous impact is avoided, the water pump can be rapidly intervened when the water level reaches a dangerous critical value, and the water pump can be timely stopped when the water level returns to a safe range, the anti-floating effect is ensured, invalid idling or dry pumping of the water pump is avoided, and the operation stability and reliability of the whole drainage system are improved.

Description

Technical Field

[0001] This application relates to the field of building drainage, and in particular to a drainage well structure and its drainage and anti-buoyancy basement foundation system. Background Technology

[0002] With the acceleration of urbanization, the development and utilization of underground space is becoming increasingly in-depth. Basements have become core supporting facilities for various buildings such as commercial complexes, residential communities, and industrial plants. Their structural safety and stability directly determine the quality and service life of the entire building project.

[0003] In areas with high groundwater levels, the basement floor slab of a building not only bears the vertical load transmitted from the superstructure, but is also subjected to the buoyancy of groundwater over a long period of time. When the buoyancy exceeds the total weight of the floor slab and the superstructure, it will cause the basement to float up as a whole, resulting in structural cracks, damage, and even serious safety accidents.

[0004] Currently, commonly used anti-buoyancy measures in engineering mainly include counterweight method, anti-uplift pile (anchor) method and drainage pressure reduction method. Among them, drainage pressure reduction method is widely used because of its advantages such as good economy, relatively simple construction and fundamental reduction of water head pressure. Its basic working principle is: groundwater seeps into drainage blind ditch or seepage layer through permeable geotextile, collects in drainage well, and then is discharged to municipal pipe network or other designated locations by water pump installed in drainage well, so as to maintain the groundwater level below the bottom surface of the foundation slab by a certain distance, thereby achieving the purpose of anti-buoyancy.

[0005] Existing drainage well structures mostly adopt passive drainage, which means that the water pump is activated by gravity or a simple float switch only when the water in the well reaches a certain depth. This method has a slow response speed, especially during the rainy season or when the groundwater level rises suddenly. It may not be able to drain the large amount of groundwater that rushes in in time, resulting in a surge of buoyancy in a short period of time. This can easily cause instantaneous impact on the bottom plate, causing structural cracks or even damage. This method needs to be improved. Summary of the Invention

[0006] To address the issue of slow response speed in drainage well structures, this application provides a drainage well structure and its drainage and anti-buoyancy basement foundation system.

[0007] Firstly, the drainage well structure provided in this application adopts the following technical solution:

[0008] A drainage well structure includes a well body with a water storage tank. The well body has an inlet pipe communicating with the water storage tank. The well body also has a water pump and a controller. The water pump has an inlet pipe and an outlet pipe, the inlet pipe extending into the water storage tank. The well body has a cavity and an inlet, the inlet connecting the cavity and the outside of the well body. A sliding rod is mounted on the well body, a float is mounted on the sliding rod and located within the cavity. A sensor block is mounted on the sliding rod and located above the cavity. A sensor element is mounted on the well body and located above the sensor block. The sensor element abuts against the sensor block and outputs a sensing signal to the controller, which then controls the water pump to start.

[0009] The well body has a receiving cavity located below the empty cavity. A sliding rod 2 moves up and down on the well body, and a float 2 is provided on the sliding rod 2. The float 2 is located in the water storage tank and below the receiving cavity. A sensing block 2 is provided on the sliding rod 2 and is located in the receiving cavity. A sensing element 2 is provided on the well body 2 and is located in the receiving cavity and below the sensing block 2. The sensing element 2 is used to abut the sensing block 2 and output a sensing signal to the controller. The controller controls the water pump to shut down.

[0010] By adopting the above technical solution, when the groundwater level rises, water enters the cavity through the inlet. Under the action of buoyancy, float one drives sensor one to rise through slide one. When the water level reaches the threshold, sensor one contacts sensor one and outputs a sensing signal to the controller. The controller controls the water pump to start, shortening the time difference from the rise in water level to the start of drainage. This achieves real-time perception and active response to changes in groundwater level, reducing the instantaneous surge of buoyancy under the bottom plate caused by drainage lag during heavy rain or a sudden rise in groundwater level, and avoiding structural cracking or damage to the bottom plate due to instantaneous impact.

[0011] When the water level outside the well stops rising and the water level in the storage tank drops to the threshold under the operation of the water pump, the second sensor contacts the second sensor block and outputs a sensing signal to the controller. The controller then controls the water pump to shut down, ensuring that the water pump can quickly intervene when the water level reaches the dangerous critical value and stop in time after the water level returns to the safe range. This not only ensures the anti-buoyancy effect but also avoids the water pump from running dry or running ineffectively, thus improving the overall operational stability and reliability of the drainage system.

[0012] Optionally, the sensing element one includes a slider one that slides up and down on the well body, a sensor one disposed on the slider one, and a driving element one disposed on the well body. The driving element one drives the slider one to move up and down, and the sensor one is used to abut against the sensing block one.

[0013] By adopting the above technical solution, the height of sensor 1 can be adjusted according to actual needs, thus adapting to changes in groundwater level in different seasons. During dry seasons or periods of low water levels, sensor 1 can be raised to reduce the number of ineffective pump starts and reduce energy consumption. During periods of high water levels or heavy rain, sensor 1 can be lowered to ensure immediate response to drainage and protect the safety of the base plate.

[0014] Optionally, the second sensing element includes a second slider that slides up and down on the well body, a second sensor disposed on the second slider, and a second driving element disposed on the well body. The second driving element drives the second slider to move up and down, and the second sensor is used to abut against the second sensing element.

[0015] By adopting the above technical solution, the height of sensor 2 can be adjusted according to actual needs. When it is found that the water pump runs for too long each time, the position of sensor 2 can be appropriately raised to shorten the single drainage time. Conversely, if it is found that the water level drops too quickly, the position of sensor 2 can be appropriately lowered so that the drainage anti-buoyancy system can always operate in the optimal working efficiency range, which not only ensures anti-buoyancy safety but also maximizes economic benefits.

[0016] Optionally, the water storage tank is provided with a settling plate, which is located below the receiving cavity and is arranged along the inner circumference of the water storage tank. The settling plate is inclined downward and inward, and a through hole is provided on the settling plate, which is located at the lower end of the settling plate.

[0017] By adopting the above technical solution, when groundwater containing silt enters the water storage tank, the silt particles naturally settle under gravity and slide down the settling plate. Finally, the silt falls into the space below the settling plate through the through hole located at the lower end of the settling plate, reducing the amount of silt that directly enters the water pump through the water inlet pipe, thereby avoiding the blockage of the drainage system caused by silt accumulation and improving the long-term operational reliability of the system.

[0018] Optionally, it also includes a collection frame located below the through hole, a collection groove on the collection frame, a plurality of drainage holes communicating with the collection groove on the outer side wall of the collection frame, a handle on the collection frame located above the collection frame, limiting blocks on both sides of the collection frame, and clearance grooves for the limiting blocks to pass through on the settling plate, with the limiting blocks abutting against the lower end of the collection frame.

[0019] By adopting the above technical solution, when it is necessary to clean up the settled silt, simply rotate the collection frame to align the limiting block and the clearance groove, then lift the handle. The limiting blocks on both sides will then disengage from the clearance groove on the settlement plate, allowing the collection frame to be removed entirely for cleaning. After cleaning, align the limiting block and the clearance groove, then place the collection frame into the through hole and rotate the collection frame so that the limiting block abuts against the lower end of the collection frame for positioning. No special tools are required, and workers can complete the silt cleaning in a short time, reducing labor intensity, shortening downtime, and thus reducing the operation and maintenance costs of the drainage system.

[0020] Optionally, the well body includes a main body and a second cover plate disposed on the main body. The receiving cavity is formed by splicing the main body and the second cover plate. The water storage tank is disposed on the main body. A receiving groove is formed on the inner wall of the water storage tank. The cavity, the first sliding rod, the first sensing element, and the first sensing block are all located in the receiving groove. The main body is provided with the first cover plate, which covers the receiving groove. A plurality of climbing ribs are provided vertically on the inner wall of the water storage tank. The two ends of the climbing ribs are connected to the main body.

[0021] By adopting the above technical solution, climbing rigs can provide workers with a foothold. When carrying out underground operations such as dredging, maintenance, or sensor calibration, workers can move up and down safely and conveniently with the help of climbing rigs, reducing the occurrence of safety accidents such as slipping and falling, and improving the safety and convenience of the operation process.

[0022] Optionally, the climbing rib is bent to form a limiting groove, the limiting groove is located on the side of the climbing rib near the center of the water storage tank, and the two opposite inner walls of the limiting groove gradually move closer to the center of the water storage tank, the limiting groove is for the water inlet pipe to be inserted.

[0023] By adopting the above technical solution, the water inlet pipe is inserted into the limiting groove during installation, which provides radial constraint force to the water inlet pipe, counteracts the vibration and water flow impact generated during the operation of the water pump, and prevents the water inlet pipe from swaying or shifting radially in the water storage tank, thus ensuring the precise connection and long-term stability of the water pump suction port.

[0024] Optionally, the climbing ribs are bent to form locking holes, which are located on both sides of the limiting groove. The handle includes a connecting part on the collection frame and a locking part on the connecting part. The locking part is located on both sides of the connecting part, and the locking holes are for the locking part to be engaged.

[0025] By adopting the above technical solution, when workers are climbing out of the well with the collection frame, they can engage the locking part on the handle with the locking hole on the climbing rib, thereby hooking the collection frame filled with mud and sand onto the well wall, freeing the workers' hands to grip the climbing rib. At the same time, the well wall structure distributes the weight of the collection frame, reducing the physical exertion of the workers and making it easier for a single person to safely carry the collection frame out of the well.

[0026] Secondly, this application provides a drainage and anti-buoyancy basement foundation system, which adopts the following technical solution:

[0027] A drainage and anti-buoyancy basement foundation system includes blind drains placed between the base slab and the foundation pit, and between the outer wall of the base slab and the foundation pit, and also includes the drainage well structure described in any of the above.

[0028] By adopting the above technical solution, the active drainage of the drainage well structure can achieve instantaneous response under extreme weather conditions such as rainstorms, and promptly discharge the inrushing groundwater. This avoids the impact and damage to the basement structure caused by the instantaneous surge in buoyancy due to drainage lag, and improves the anti-buoyancy safety factor of the basement.

[0029] In summary, this application includes at least one of the following beneficial technical effects:

[0030] 1. It shortens the time difference between the rise in water level and the start of drainage, enabling real-time perception and proactive response to changes in groundwater level. It reduces the instantaneous surge in buoyancy under the base plate caused by drainage delays during heavy rain or a sudden rise in groundwater level, preventing structural cracking or damage to the base plate due to instantaneous impact. It ensures that the water pump can quickly intervene when the water level reaches a dangerous critical value and stop in time after the water level returns to a safe range. This not only ensures the anti-buoyancy effect but also avoids the ineffective idling or dry pumping of the water pump, improving the overall operational stability and reliability of the drainage system.

[0031] 2. The height of sensor one can be adjusted according to actual needs, so as to adapt to the changes in groundwater level in different seasons. During the dry season or low water level period, sensor one can be raised to reduce the number of ineffective pump starts and reduce energy consumption. During the wet season or rainstorm conditions, sensor one can be lowered to ensure that drainage is responded to in the first time and to protect the safety of the base plate.

[0032] 3. When workers are carrying the collection frame out of the well, they can engage the locking part on the handle with the locking hole on the climbing rib to hook the collection frame onto the well wall. This frees up the workers' hands to grip the climbing rib and also distributes the weight of the collection frame using the well wall structure, reducing the workers' physical exertion and making it easier for a single person to carry the collection frame out of the well safely. Attached Figure Description

[0033] Figure 1This is a partial cross-sectional schematic diagram showing the interaction between the embodiment of this application and the basement floor slab and foundation pit.

[0034] Figure 2 This is a partial structural diagram of an embodiment of this application, mainly showing the structure of the water inlet.

[0035] Figure 3 This is a partial cross-sectional view of the main body of an embodiment of this application, mainly showing the structure of the through hole and the relief groove.

[0036] Figure 4 This is a partial structural diagram of an embodiment of this application, mainly showing the structure of the controller.

[0037] Figure 5 for Figure 1 The enlarged view of section A mainly shows the structure of sensor one.

[0038] Figure 6 for Figure 1 The enlarged view of section B mainly shows the structure of sensor two.

[0039] Figure 7 This is a partial structural diagram of an embodiment of this application, mainly showing the structure of the connecting part and the snap-fit ​​part.

[0040] Explanation of reference numerals in the attached drawings: 1. Excavation pit; 2. Bottom slab; 3. Blind drain; 4. Well body; 41. Main body; 411. Water storage tank; 412. Receiving tank; 413. Cavity; 414. Water inlet; 42. Cover plate II; 5. Collection frame; 51. Collection trough; 52. Leakage hole; 6. Water inlet pipe; 7. Water pump; 8. Controller; 9. Water inlet pipe; 10. Water outlet pipe; 11. Sliding rod I; 12. Float I; 13. Sensing block I; 14. Sensing element I; 141. Sliding block I; 14 2. Sensor 1; 143. Drive Component 1; 15. Cover Plate 1; 16. Receiving Cavity; 17. Slide Rod 2; 18. Float Block 2; 19. Sensing Block 2; 20. Sensing Component 2; 201. Slider 2; 202. Sensor 2; 203. Drive Component 2; 21. Settling Plate; 211. Through Hole; 212. Relief Groove; 22. Handle; 221. Connecting Part; 222. Snap-fit ​​Part; 23. Limiting Block; 24. Climbing Rib; 241. Limiting Groove; 242. Snap Hole. Detailed Implementation

[0041] The following is in conjunction with the appendix Figures 1-7 This application will be described in further detail.

[0042] This application discloses a drainage and anti-buoyancy basement foundation system. The drainage and anti-buoyancy basement foundation system is placed in a foundation pit 1; that is, the foundation pit 1 is first excavated below ground level, and then the drainage and anti-buoyancy basement foundation system is constructed in the foundation pit 1. (Refer to...) Figures 1-7The drainage and anti-buoyancy basement foundation system includes blind drain 3 and drainage well structure. Blind drain 3 is set around the perimeter of the basement foundation 2 to form a continuous drainage channel for collecting groundwater.

[0043] Reference Figures 1-7 The drainage well structure is located at the end of the blind ditch 3 and is used to collect and discharge the groundwater in the blind ditch 3. The drainage well structure includes a well body 4 and a collection frame 5. The well body 4 includes a main body 41 and a cover plate 42. A water storage tank 411 is opened on the upper end face of the main body 41. A water inlet pipe 6 is fixed on the main body 41. The water inlet pipe 6 is located on the outside of the main body 41 and is connected to the water storage tank 411. The water inlet pipe 6 is connected to the end of the blind ditch 3. The groundwater is collected in the blind ditch 3 and then flows into the water storage tank 411 on the main body 41 through the water inlet pipe 6. In actual use, the inlet of the water inlet pipe 6 is wrapped with geotextile. The geotextile is permeable to water but not sand, so as to filter the groundwater entering the water inlet pipe 6 and prevent the mud and sand from clogging the pipe.

[0044] Reference Figures 1-7 The main body 41 is equipped with a water pump 7 and a controller 8. Both the water pump 7 and the controller 8 are located on the outside of the main body 41. The water pump 7 is equipped with an inlet pipe 9 and an outlet pipe 10. The inlet pipe 9 extends into the water storage tank 411 to pump out accumulated water, while the outlet pipe 10 is connected to the municipal pipe network or a designated discharge point to discharge water.

[0045] Reference Figures 1-7 The inner wall of the water storage tank 411 is provided with a receiving groove 412, which is located above the water inlet pipe 6. The main body 41 is provided with a cavity 413, which is located inside the receiving groove 412. The outer wall of the main body 41 is provided with a water inlet 414, which connects the cavity 413 and the outside of the main body 41. A sliding rod 11 is slidably moved on the main body 41, which is located inside the receiving groove 412. A float 12 is fixed on the sliding rod 11, which is located inside the cavity 413. A sensing block 13 is fixed at the upper end of the sliding rod 11, which is located inside the receiving groove 412 and above the cavity 413.

[0046] Reference Figures 1-7A sensor 14 is installed on the main body 41. The sensor 14 is located in the receiving groove 412 and above the sensing block 13. The sensor 14 includes a slider 141, a sensor 142 and a drive 143. The slider 141 slides up and down on the main body 41. The drive 143 is fixed on the main body 41. The piston rod of the drive 143 is fixedly connected to the slider 141. The drive 143 drives the slider 141 to move up and down. The sensor 142 is fixed on the side of the slider 141 near the sensing block 13. The sensor 142 is used to contact the sensing block 13 and output a sensing signal to the controller 8. The controller 8 controls the water pump 7 to start. In this embodiment, the sensor 142 is a micro switch and the sensing block 13 is an iron block.

[0047] Reference Figures 1-7 A cover plate 15 is hinged to the main body 41, and the cover plate 15 covers the receiving groove 412. In this embodiment, a bolt is passed through the cover plate 15, and the bolt is threaded to the main body 41 to realize the positioning of the cover plate 15.

[0048] Reference Figures 1-7 The second cover plate 42 is located inside the water storage tank 411. The main body 41 and the second cover plate 42 are spliced ​​to form a receiving cavity 16. The receiving cavity 16 is located below the receiving tank 412. The second cover plate 42 covers one side of the receiving cavity 16. In this embodiment, a bolt is provided on the second cover plate 42. The bolt is threaded onto the main body 41 to realize the positioning of the second cover plate 42 on the main body 41.

[0049] Reference Figures 1-7 The main body 41 has a sliding rod 17 that moves up and down. A float 18 is fixed on the sliding rod 17. The float 18 is located in the water storage tank 411 and below the receiving cavity 16. A sensing block 19 is fixed on the sliding rod 17. The sensing block 19 is located in the receiving cavity 16.

[0050] Reference Figures 1-7 The main body 41 is provided with a second sensing element 20, which is located in the receiving cavity 16. The second sensing element 20 includes a second slider 201, a second sensor 202, and a second driving element 203. The second slider 201 slides up and down on the main body 41. The second sensor 202 is located below the second sensing block 19 and is fixed on the second slider 201. The second driving element 203 is fixed on the main body 41, and the piston rod of the second driving element 203 is fixedly connected to the second slider 201. The second driving element 203 drives the second slider 201 to rise and fall. The second sensor 202 is used to abut against the second sensing block 19 and output a sensing signal to the controller 8. The controller 8 controls the water pump 7 to shut down. In this embodiment, the second sensor 202 is a micro switch, and the second sensing block 19 is an iron block.

[0051] Reference Figures 1-7A settling plate 21 is fixed inside the water storage tank 411. The settling plate 21 is located below the receiving cavity 16 and is arranged along the inner circumference of the water storage tank 411. The settling plate 21 is inclined downward and inward. A through hole 211 is opened on the settling plate 21. The through hole 211 is located at the lower end of the settling plate 21 and vertically penetrates the settling plate 21.

[0052] Reference Figures 1-7 The collection frame 5 is located below the through hole 211. A collection groove 51 is provided on the upper end face of the collection frame 5. A number of leakage holes 52 are provided on the outer side wall of the collection frame 5. The number of leakage holes 52 are evenly distributed circumferentially and vertically around the outer periphery of the collection frame 5. All the leakage holes 52 are connected to the collection groove 51. A handle 22 is fixed on the collection frame 5. The handle 22 is located above the collection frame 5. The handle 22 includes a connecting part 221 and two locking parts 222. The connecting part 221 is fixed on the collection frame 5. The two locking parts 222 are located at the end of the connecting part 221 away from the collection frame 5. The two locking parts 222 are located on opposite sides of the connecting part 221 and are fixedly connected to the connecting part 221.

[0053] Reference Figures 1-7 Limiting blocks 23 are fixed on both sides of the collection frame 5. Two clearance grooves 212 are opened on the settling plate 21. The two clearance grooves 212 are located on opposite sides of the through hole 211 and are connected to the through hole 211. The clearance grooves 212 penetrate the settling plate 21 vertically. The clearance grooves 212 allow the limiting blocks 23 to pass through. The limiting blocks 23 abut against the lower end of the receiving collection frame 5.

[0054] Reference Figures 1-7 A number of climbing ribs 24 are fixed on the inner wall of the water storage tank 411. The climbing ribs 24 are located on opposite sides of the water storage tank 411, and the climbing ribs 24 on the same side of the water storage tank 411 are distributed vertically at intervals. Both ends of each climbing rib 24 are fixedly connected to the main body 41. Each climbing rib 24 is bent to form a limiting groove 241 and two locking holes 242. The limiting groove 241 is located on the side of the climbing rib 24 closer to the center of the water storage tank 411, and the two opposite inner walls of the limiting groove 241 gradually move closer to the center of the water storage tank 411. The limiting groove 241 is used to insert the water inlet pipe 9. The two locking holes 242 are located on opposite sides of the limiting groove 241 and on the side of the climbing rib 24 away from the center of the water storage tank 411. The locking holes 242 are used to insert the locking part 222.

[0055] It should be noted that in this embodiment, the climbing rib 24 is formed by bending once, and at the same time, a limiting groove 241 is formed near the center of the water storage tank 411 and two locking holes 242 are located on opposite sides of the limiting groove 241 and away from the center of the water storage tank 411.

[0056] In actual use, when groundwater containing silt enters the water storage tank 411, the silt particles settle naturally under the action of gravity and slide down the settling plate 21. Finally, the silt falls into the collection trough 51 on the collection frame 5 located below the settling plate 21 through the through hole 211 at the lower end of the settling plate 21.

[0057] When it is necessary to clean up the settled silt, simply hold the handle 22 and rotate the collection frame 5 so that the limiting block 23 and the relief groove 212 are aligned. Then lift the handle 22, and the limiting blocks 23 on both sides will disengage from the relief groove 212 on the settling plate 21. The collection frame 5 can then be taken out as a whole for cleaning. After cleaning, align the limiting block 23 and the relief groove 212, and then put the collection frame 5 into the through hole 211. Rotate the collection frame 5 so that the limiting block 23 abuts against the lower end of the collection frame 5 to achieve positioning.

[0058] When workers carry the collection frame 5 out of the well, they can engage the locking part 222 on the handle 22 into the locking hole 242 on the climbing rib 24, thereby hooking the collection frame 5 filled with mud and sand onto the well wall. This frees up the workers' hands to grip the climbing rib 24, while the well wall structure distributes the weight of the collection frame 5, reducing the workers' physical exertion and making it easier for a single person to carry the collection frame 5 out of the well safely.

[0059] The implementation principle of a drainage and anti-buoyancy basement foundation system according to an embodiment of this application is as follows:

[0060] When the groundwater level rises, water enters the cavity 413 through the inlet 414. Under the action of buoyancy, the float 12 drives the sensing block 13 to rise through the slide rod 11. When the water level reaches the threshold, the sensor 142 contacts the sensing block 13 and outputs a sensing signal to the controller 8. The controller 8 controls the water pump 7 to start, shortening the time difference from the rise in water level to the start of drainage. This realizes real-time perception and active response to changes in groundwater level, reduces the instantaneous surge of buoyancy under the base plate 2 caused by drainage lag during heavy rain or a sudden rise in groundwater level, and avoids structural cracking or damage to the base plate 2 due to instantaneous impact, thus improving the anti-buoyancy safety factor of the basement.

[0061] The height of sensor 142 can be adjusted according to actual needs, thus adapting to changes in groundwater level in different seasons. During dry seasons or periods of low water levels, sensor 142 can be raised to reduce the number of ineffective starts of water pump 7 and reduce energy consumption. During periods of high water levels or heavy rain, sensor 142 can be lowered to ensure immediate response to drainage and protect the safety of base plate 2.

[0062] When the water level outside the main body 41 stops rising, and the water level in the water storage tank 411 drops to the threshold under the operation of the water pump 7, the sensor 202 contacts the sensing block 19 and outputs a sensing signal to the controller 8. The controller 8 controls the water pump 7 to shut down, ensuring that the water pump 7 can quickly intervene when the water level reaches the dangerous critical value and stop in time after the water level returns to the safe range. This not only ensures the anti-buoyancy effect, but also avoids the ineffective idling or dry pumping of the water pump 7, and improves the overall operational stability and reliability of the drainage system.

[0063] The height of sensor 202 can be adjusted according to actual needs. When it is found that the water pump 7 runs for too long each time, the position of sensor 202 can be raised appropriately to shorten the single drainage time. Conversely, if it is found that the water level drops too quickly, the position of sensor 202 can be lowered appropriately so that the drainage anti-buoyancy system can always operate in the optimal working efficiency range, which not only ensures anti-buoyancy safety but also maximizes economic benefits.

[0064] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A drainage well structure, comprising a well body (4), wherein a water storage tank (411) is provided on the well body (4), and a water inlet pipe (6) communicating with the water storage tank (411) is provided on the well body (4), characterized in that: The well body (4) is equipped with a water pump (7) and a controller (8). The water pump (7) is equipped with an inlet pipe (9) and an outlet pipe (10). The inlet pipe (9) extends into the water storage tank (411). The well body (4) is provided with a cavity (413) and an inlet (414). The inlet (414) connects the cavity (413) and the outside of the well body (4). A sliding rod (11) slides up and down on the well body (4). A float (12) is provided on the sliding rod (11). The float (12) is located inside the cavity (413). The slide bar (11) is provided with a sensing block (13), which is located above the cavity (413). The well body (4) is provided with a sensing element (14), which is located above the sensing block (13). The sensing element (14) is used to contact the sensing block (13) and output a sensing signal to the controller (8). The controller (8) controls the water pump (7) to start. The well body (4) has a receiving cavity (16) located below the cavity (413). A sliding rod (17) slides up and down on the well body (4). A float (18) is provided on the sliding rod (17). The float (18) is located in the water storage tank (411) and below the receiving cavity (16). A sensing block (19) is provided on the sliding rod (17) and is located in the receiving cavity (16). A sensing element (20) is provided on the well body (4) and is located in the receiving cavity (16) and below the sensing block (19). The sensing element (20) is used to abut against the sensing block (19) and output a sensing signal to the controller (8). The controller (8) controls the water pump (7) to shut down. The water storage tank (411) is provided with a settling plate (21), which is located below the receiving cavity (16) and is arranged along the inner periphery of the water storage tank (411). The settling plate (21) is inclined downward and inward, and a through hole (211) is provided on the settling plate (21), which is located at the lower end of the settling plate (21). It also includes a collection frame (5), which is located below the through hole (211). The collection frame (5) has a collection groove (51) and a plurality of drain holes (52) communicating with the collection groove (51) on the outer side wall of the collection frame (5). The collection frame (5) has a handle (22) located above the collection frame (5). Limiting blocks (23) are provided on both sides of the collection frame (5). The settling plate (21) has a clearance groove (212) for the limiting block (23) to pass through. The limiting block (23) abuts against the lower end of the collection frame (5). The well body (4) includes a main body (41) and a cover plate (42) on the main body (41). The receiving cavity (16) is formed by splicing the main body (41) and the cover plate (42). The water storage tank (411) is provided on the main body (41). The inner wall of the water storage tank (411) is provided with a receiving groove (412). The cavity (413), the sliding rod (11), the sensing element (14) and the sensing block (13) are all located in the receiving groove (412). The main body (41) is provided with a cover plate (15). The cover plate (15) covers the receiving groove (412). The inner wall of the water storage tank (411) is provided with several climbing ribs (24) in a vertical direction. The two ends of the climbing ribs (24) are connected to the main body (41). The climbing rib (24) is bent to form a limiting groove (241). The limiting groove (241) is located on the side of the climbing rib (24) near the center of the water storage tank (411). The two opposite inner walls of the limiting groove (241) gradually move closer to the center of the water storage tank (411). The limiting groove (241) is used for the water inlet pipe (9) to be inserted. The climbing rib (24) is bent to form a locking hole (242), which is located on both sides of the limiting groove (241). The handle (22) includes a connecting part (221) on the collection frame (5) and a locking part (222) on the connecting part (221). The locking part (222) is located on both sides of the connecting part (221), and the locking hole (242) is for the locking part (222) to be engaged.

2. The drainage well structure according to claim 1, characterized in that: The first sensing element (14) includes a slider (141) that slides up and down on the well body (4), a sensor (142) provided on the slider (141), and a driving element (143) provided on the well body (4). The driving element (143) drives the slider (141) to move up and down, and the sensor (142) is used to abut against the sensing block (13).

3. The drainage well structure according to claim 1, characterized in that: The second sensing element (20) includes a second slider (201) that slides up and down on the well body (4), a second sensor (202) provided on the second slider (201), and a second driving element (203) provided on the well body (4). The second driving element (203) drives the second slider (201) to move up and down, and the second sensor (202) is used to abut against the second sensing block (19).

4. A drainage and anti-buoyancy basement foundation system, comprising a blind drain (3) placed between the base slab (2) and the foundation pit (1) and between the outer wall of the base slab (2) and the foundation pit (1), characterized in that: It also includes the drainage well structure as described in any one of claims 1-3.

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