Intelligent dewatering and drainage system for large-area deep foundation pit

Abstract

The utility model relates to the technical field of underground engineering underground water disaster early warning, and discloses a large-area deep foundation pit intelligent dewatering and drainage system which comprises a foundation pit and a visual monitoring terminal, a plurality of dewatering wells are arranged in the foundation pit, and dewatering pumps, water level monitoring mechanisms and water level alarms are arranged in the dewatering wells. The water level monitoring mechanism is electrically connected with the dewatering pump, and the water level monitoring mechanism and the water level alarm are electrically connected with the visual monitoring terminal. The underground water level visualization system has the advantages that data of the water level monitoring mechanisms and signals of the water level alarms in all the precipitation wells are connected with the visualization monitoring terminal, the underground water level visualization system is created, water level information of all the precipitation wells is fed back to the visualization monitoring terminal in real time, and field personnel are assisted in mastering the water level information.

Description

Technical Field

[0001] The utility model relates to the technical field of groundwater disaster early warning for underground projects, and in particular to an intelligent drainage system for a large-area deep foundation pit. Background Art

[0002] During the construction of deep foundation pits, the groundwater level is an important factor affecting the overall safety, stability and progress of on-site construction. The existing solution is mainly to control the water level through precipitation wells. This traditional single precipitation method is not only inefficient, but also lacks intelligence and linkage. The opening and closing of the precipitation well cannot be linked to the changes in the groundwater level, and the precipitation pump is easily damaged if it is turned on for a long time.

[0003] The Chinese utility model patent with the authorization announcement number CN211857710U discloses an automatic alarm system for a precipitation well, including a water level alarm and a float. The water level alarm is connected to a precipitation well distribution box, and the precipitation well distribution box is arranged at one side of the wellhead of the precipitation well; the float is connected to the water level alarm and arranged in the precipitation well; wherein the number of the precipitation well distribution boxes is the same as the number of the precipitation wells. This technical solution can only monitor the water level of one precipitation well. For a large area of ​​complex deep foundation pits, the staff cannot understand the changes in the groundwater level in time.

[0004] Drainage construction under large-scale and complex deep foundation pit conditions cannot achieve the linkage work between multiple drainage wells and corresponding alarm devices, which easily leads to waste of resources. It is even more impossible to achieve visual display of on-site groundwater levels to assist on-site personnel in timely understanding of groundwater level changes. Utility Model Content

[0005] The purpose of the utility model is to develop a linkage and early warning system for multi-point dewatering wells in a large-area complex deep foundation pit, and to propose an intelligent dewatering system for a large-area deep foundation pit in view of the above-mentioned deficiencies in the prior art.

[0006] A large-area deep foundation pit intelligent drainage system includes a dewatering pump and a water level visual monitoring system. A plurality of dewatering wells are provided in the foundation pit. The dewatering pump is arranged in the dewatering well. The water level visual monitoring system includes a water level monitoring mechanism and a visual monitoring terminal. The visual monitoring terminal is electrically connected to the dewatering pump and the water level monitoring mechanism.

[0007] By adopting the above technical solution: connecting the water level monitoring device data and water level alarm signal in each precipitation well with the visual monitoring terminal, creating a groundwater level visualization system, and feeding back the water level information of each precipitation well to the visual monitoring terminal in real time, assisting on-site personnel to grasp the water level information.

[0008] After the system is installed, the entire system will be debugged to ensure the normal operation of the system and meet the actual construction needs on site.

[0009] During use, regularly inspect and maintain the float, electrical connection system, pumping pipe, alarm, etc., replace damaged components, and ensure the normal operation of the system during the use period.

[0010] The above technical solution is further configured as follows: the water level monitoring mechanism includes a distance measuring sensor, a guide rod and a float slidably connected to the guide rod, and the guide rod is provided with a maximum water point and a minimum water point.

[0011] The above technical solution is further configured as follows: the visual monitoring terminal includes a controller and a display panel, the controller is electrically connected to the display panel, and the distance measuring sensor is electrically connected to the controller.

[0012] By adopting the above technical solution: a guide rod, a float and a distance measuring sensor are set in the precipitation well, the highest water point and the lowest water point are set on the guide rod, the height of the float floats along the guide rod as the water level changes, when the groundwater level is close to the set highest water point, the float reaches the highest water point, the distance measuring sensor transmits the position information of the float to the controller, the controller controls the precipitation pump to start working, when the groundwater level drops to the lowest water point, the controller controls to turn off the precipitation pump, when the water level rises to the highest water point, the precipitation pump starts precipitation again, and this cycle is repeated, avoiding waste of resources and equipment damage caused by long-term uninterrupted operation of the precipitation pump.

[0013] The above technical solution is further configured as follows: a water level alarm is installed in the precipitation well, and the installation height of the water level alarm is higher than the highest water point.

[0014] By adopting the above technical solution: a water level alarm device is installed above the highest water point. When the groundwater level exceeds the alarm position, the alarm starts to warn and remind on-site personnel to inspect and repair the precipitation well to ensure the normal operation of the precipitation well.

[0015] The above technical solution is further configured as follows: a water collection well is provided around the foundation pit, the water inlet end of the dewatering pump is connected to the dewatering well, and the water outlet end is connected to the water collection well.

[0016] The above technical solution is further configured as follows: a water pump is provided in the water collection well.

[0017] By adopting the above technical solution: multiple collection wells are set up in the area around the foundation pit, and the groundwater in the on-site precipitation wells is pumped into the collection wells by precipitation pumps, and then the accumulated water in the collection wells is discharged into the municipal pipeline by a pumping pump.

[0018] The above technical solution is further configured as follows: the precipitation well comprises a precipitation hole, a precipitation pipe is installed in the precipitation hole, and the inner wall of the precipitation pipe is filled with filter material.

[0019] The above technical solution is further configured as follows: a filter is provided below the downcomer.

[0020] By adopting the above technical solution: after measuring the location of the drainage well on site, bury the casing and use a drilling rig to drill a hole to form a drainage hole. During the drilling construction, use mud to protect the wall, then put in the drainage pipe, fill the filter material around the drainage hole, and fix the filter material with paint. Place a filter screen under the drainage pipe to prevent blockage of the drainage pipe. After the well is washed, install the drainage pump and start test pumping.

[0021] Beneficial effects of the utility model:

[0022] First of all, the float and electrical connection controller of the utility model make the water pump switch of the precipitation well more intelligent. During the operation of the precipitation well, the float can monitor the groundwater level information and feed the information back to the electrical connection controller, thereby controlling the opening and closing of the precipitation pump. When the groundwater level is higher than the predetermined water level, the precipitation pump is turned on and the water level is lowered. When the water level is reduced to the expected lowest point and remains stable, the precipitation pump is turned off and works repeatedly. This design not only improves the working efficiency of the precipitation well, but also reduces the operating cost of the precipitation well. In addition, the precipitation well is also equipped with a corresponding alarm device. When the groundwater level exceeds the warning value and cannot be lowered for a long time, the automatic alarm device will be turned on, and the on-site construction personnel can timely maintain the precipitation well. Finally, the water level information of a single precipitation well can be visualized by a computer, and the on-site groundwater information can be more accurately grasped by analyzing and processing the data of precipitation wells at multiple points on site. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the utility model.

[0024] Among them, 1. foundation pit; 2. visual monitoring terminal; 3. dewatering well; 31. dewatering hole; 32. filter material; 4. dewatering pump; 41. dewatering pipe; 42. outlet pipe; 43. filter screen; 5. float; 6. distance measuring sensor; 7. water level alarm; 8. water collection well; 9. water pump; 10. highest water point; 11. lowest water point; 12. guide rod. DETAILED DESCRIPTION

[0025] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0026] Example 1

[0027] An intelligent drainage system for a large-area deep foundation pit includes a dewatering pump 4 and a water level visualization monitoring system. A plurality of dewatering wells 3 are arranged in the foundation pit 1. The dewatering wells 3 are provided with dewatering pumps 4. The water level visualization monitoring system includes a water level monitoring mechanism and a visualization monitoring terminal 2. The visualization monitoring terminal 2 is electrically connected to the dewatering pump 4 and the water level monitoring mechanism.

[0028] The data visualization monitoring terminal 2 of the water level monitoring organization in each precipitation well 3 is connected to create a groundwater level visualization system, and the water level information of each precipitation well 3 is fed back to the visualization monitoring terminal 2 in real time to assist on-site personnel in mastering the water level information.

[0029] Example 2

[0030] The water level monitoring mechanism is a float liquid level transmitter, including a distance sensor 6, a float 5 and a guide rod 12. The float 5 is slidably connected to the guide rod 12. The float 5 is located in the dewatering well 3. The visual monitoring terminal 2 includes a controller and a display panel. The controller is electrically connected to the display panel, the distance sensor 6 is electrically connected to the controller, and the controller is electrically connected to the dewatering pump 4. The guide rod 12 is provided with a maximum water point 10 and a minimum water point 11. When the float 5 is located at the maximum water point 10, the distance sensor 6 transmits a signal to the controller, and the controller controls the dewatering pump 4 to turn on. When the float 5 is located at the minimum water point 11, the controller 6 controls the dewatering pump 4 to turn off.

[0031] A water level monitoring mechanism is set in the precipitation well 3, and a maximum water point 10 and a minimum water point 11 are set on the guide rod 12 of the water level monitoring mechanism. The height of the float 5 floats with the change of the water level. When the groundwater level is close to the set maximum water point 10, the distance sensor 6 transmits the position information of the float 5 to the controller. At this time, the controller 6 connected to the distance sensor signal controls the precipitation pump 4 to start working. When the groundwater level drops to the minimum water point 11, the controller 6 controls to turn off the water pump 9. When the water level rises to the maximum water point 10, the precipitation pump 4 starts precipitation again. This cycle is repeated, thereby avoiding waste of resources and equipment damage caused by long-term uninterrupted operation of the precipitation pump 4.

[0032] Example 3

[0033] A water level alarm 7 is installed in the precipitation well 3, and the installation height of the water level alarm 7 is higher than the highest water point 10. The water level alarm 7 is installed above the highest water point 10 inside the precipitation well 3. When the groundwater level exceeds the alarm position, it means that the water level monitoring mechanism or the precipitation pump 4 cannot operate normally, causing the water level to exceed the highest water point 10. The alarm starts to warn and reminds the on-site personnel to check and repair the precipitation well 3 to ensure the normal operation of the precipitation well 3.

[0034] Example 4

[0035] A water collection well 8 is arranged around the foundation pit 1, the water inlet end of the dewatering pump 4 is connected to the dewatering well 3 through a dewatering pipe 41, and the water outlet end is connected to the water collection well 8 through an outlet pipe 42, and a pumping pump 9 is arranged in the water collection well 8. A plurality of water collection wells 8 are arranged in the surrounding area of ​​the foundation pit 1, and the groundwater in the on-site dewatering well 3 is uniformly pumped and discharged into the water collection well 8 by the dewatering pump 4, and then the water accumulated in the water collection well 8 is uniformly discharged into the municipal pipeline by the pumping pump 9.

[0036] Example 5

[0037] The precipitation well 3 includes a precipitation hole 31, a precipitation pipe 41 is installed in the precipitation hole 31, the inner wall of the precipitation hole 31 is filled with filter material 32, and the filter material is fixed on the inner wall of the precipitation hole 31 by coating, and a filter screen 43 is arranged under the precipitation pipe 41 to prevent debris from entering the precipitation pipe 41. After measuring the position of the precipitation well 3 on site, the casing is buried and a drilling rig is used to form a precipitation hole 31. Mud is used to protect the wall during the drilling construction process, and then the precipitation pipe 41 is placed, and the filter material 32 is filled around it. A filter screen 43 is placed under the precipitation pipe 41 to prevent the precipitation pipe 41 from being blocked. After the well is washed, the precipitation pump 4 is installed to start trial pumping.

[0038] For matters not mentioned above, the prior art applies.

[0039] Although some specific embodiments of the utility model have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration, not for limiting the scope of the utility model. Those skilled in the art of the utility model can make various modifications or supplements to the specific embodiments described or replace them in a similar manner, but they will not deviate from the direction of the utility model or exceed the scope defined by the attached claims. Those skilled in the art should understand that any modification, equivalent replacement, improvement, etc. made to the above implementation methods based on the technical essence of the utility model should be included in the protection scope of the utility model.

Claims

1. An intelligent drainage system for large-scale deep foundation pits, characterized by: It comprises a dewatering pump (4) and a water level visual monitoring system, wherein a plurality of dewatering wells (3) are provided in the foundation pit (1), the dewatering pump is arranged in the dewatering wells (3), and the water level visual monitoring system comprises a water level monitoring mechanism and a visual monitoring terminal (2), wherein the visual monitoring terminal (2) is electrically connected to the dewatering pump (4) and the water level monitoring mechanism.

2. According to claim 1, a large-area deep foundation pit intelligent drainage system is characterized by: The water level monitoring mechanism comprises a distance measuring sensor (6), a guide rod (12), and a floating ball (5) slidably connected to the guide rod, wherein a maximum water point (10) and a minimum water point (11) are provided on the guide rod.

3. According to claim 2, the intelligent drainage system for large-area deep foundation pits is characterized by: The visual monitoring terminal (2) comprises a controller and a display panel, the controller is electrically connected to the display panel, and the distance measuring sensor (6) is signal-connected to the controller.

4. The large-area deep foundation pit intelligent drainage system according to claim 2 is characterized by: A water level alarm (7) is installed in the precipitation well (3), and the installation height of the water level alarm (7) is higher than the highest water point (10).

5. The large-area deep foundation pit intelligent drainage system according to claim 1 is characterized by: A water collection well (8) is provided around the foundation pit (1); the water inlet of the dewatering pump (4) is connected to the dewatering well (3), and the water outlet is connected to the water collection well (8).

6. The large-area deep foundation pit intelligent drainage system according to claim 5 is characterized by: A water pump (9) is provided in the water collection well (8).

7. The large-area deep foundation pit intelligent drainage system according to claim 1 is characterized by: The precipitation well (3) comprises a precipitation hole (31), a precipitation pipe (41) is installed in the precipitation hole (31), and a filter material (32) is provided on the inner wall of the precipitation hole (31).

8. The intelligent drainage system for large-area deep foundation pit according to claim 7 is characterized by: A filter screen (43) is provided below the downcomer (41).

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