Dynamic balance system for water level of foundation pit

Abstract

The utility model discloses a dynamic water level balancing system of a foundation pit, which relates to the technical field of foundation pit construction and comprises a dewatering well, a recharge well and a balancing device. The dewatering well is arranged in the foundation pit and extends to the position below the foundation pit. The recharge well is arranged close to the foundation pit and extends to the position below the foundation pit. The balancing device comprises a controller, a water pumping assembly and a pressurizer, the water pumping assembly comprises a water pump and a water level sensor, the pressurizer, the water pump and the water level sensor are all in communication connection with the controller, the water pump and the water level sensor are both arranged in the precipitation well, and the water level sensor is used for obtaining water level information in the precipitation well; the controller is used for controlling the water suction pump to suck out water in the dewatering well, and the controller is further used for controlling the pressurizer to pressurize the interior of the recharge well according to the water level information. By means of the water level dynamic balance system of the foundation pit, dynamic balance of the foundation pit and underground water of stratums around the foundation pit can be maintained.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of foundation pit construction, especially relates to a water level dynamic balance system of foundation pit. BACKGROUND

[0002] In the current engineering construction field, foundation pit engineering is a vital link. In the foundation pit engineering, the dewatering of the foundation pit is the premise to ensure the safe implementation of the foundation pit engineering. At present, the dewatering of the foundation pit usually adopts the mode of open ditch drainage, vacuum well point and deep well dewatering to discharge the underground water under the foundation pit. However, the dewatering of the foundation pit by using these modes is easy to affect the water level balance of the underground water around the foundation pit, especially in the area rich in underground water resources, such as the water-rich spring area. Since the content of the underground water in the water-rich spring area is high, the discharge amount of the underground water for the dewatering of the foundation pit in the water-rich spring area is large, and the large discharge amount of the underground water is easy to cause great influence on the water level balance of the underground water of the foundation pit and the surrounding strata, resulting in the destruction of the water level balance of the underground water of the foundation pit and the surrounding strata. SUMMARY

[0003] The main purpose of the utility model is to provide a water level dynamic balance system of foundation pit, which aims to solve the technical problems.

[0004] To achieve the above-mentioned purpose, the water level dynamic balance system of foundation pit provided by the utility model comprises:

[0005] A dewatering well is arranged in the foundation pit and extends to the lower part of the foundation pit.

[0006] A recharge well is arranged close to the foundation pit and extends to the lower part of the foundation pit.

[0007] A balancing device comprises a controller, a water pumping assembly and a pressure booster. The water pumping assembly comprises a water pump and a water level sensor. The pressure booster, the water pump and the water level sensor are in communication connection with the controller. The water pump and the water level sensor are arranged in the dewatering well. The water level sensor is used to acquire the water level information in the dewatering well and send it to the controller. The controller is used to control the water pump to pump out the water in the dewatering well according to the water level information, and part of the pumped-out water is recharged into the recharge well. In addition, the controller is also used to control the pressure booster to pressurize the recharge well according to the water level information, so that the water in the recharge well seeps into the lower part of the foundation pit.

[0008] In an embodiment, the water pumping assembly further comprises a water storage tank, the water storage tank is respectively communicated with a water inlet pipe and a water outlet pipe, the water inlet pipe extends into the dewatering well and is connected with the water pumping pump, the water outlet pipe extends into the recharge well, a water outlet pump is installed on the water outlet pipe, and the water outlet pump is in communication connection with the controller; the controller can control the water pumping pump to pump the water in the dewatering well to the water storage tank according to the water level information, and can control the water outlet pump to pump the water in the water storage tank to the recharge well.

[0009] In an embodiment, a filter core structure is arranged in the water outlet pump.

[0010] In an embodiment, the filter core structure comprises an activated carbon filter core layer, a non-woven fabric filter core layer and a primary filter core layer arranged in layers.

[0011] In an embodiment, a water stop valve and a one-way valve are respectively installed on the water inlet pipe and the water outlet pipe.

[0012] In an embodiment, an electromagnetic flowmeter is arranged in the water outlet pipe, the electromagnetic flowmeter is used for detecting the flow of the water pumped into the recharge well in the water outlet pipe, and the electromagnetic flowmeter is in electrical connection with the controller.

[0013] In an embodiment, a moving base is further arranged at the bottom of the water storage tank, and the moving base is used for moving the water storage tank.

[0014] In an embodiment, filter material is arranged in the water storage tank.

[0015] In an embodiment, filter stones are filled in the bottom of the recharge well.

[0016] In an embodiment, the water level dynamic balance system further comprises a terminal, and the terminal is in communication connection with the controller.

[0017] The technical scheme of the utility model can obtain the water level information in the dewatering well through the water level sensor and the water pumping pump, and the controller can control the water pumping pump to pump the water in the dewatering well out according to the water level information in the dewatering well, so that the dewatering of the foundation pit can be completed. Moreover, the water pumping pump can also pump part of the pumped water into the recharge well, and the water level information of the dewatering well can be obtained through the water level sensor, and the controller can control the pressure generator to pressurize the recharge well according to the water level information in the dewatering well, so that the water in the recharge well can seep into the interstice of the stratum, thereby supplementing the underground water of the foundation pit and the stratum around the foundation pit, and maintaining the dynamic balance of the underground water of the foundation pit and the stratum around the foundation pit. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description, obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to the structures shown in these drawings without creative labor.

[0019] Figure 1 The structural schematic diagram of an embodiment of the water level dynamic balance system of the foundation pit provided by the present application is shown in the figure.

[0020] Figure 2 The structural schematic diagram of the water outlet pump in the water level dynamic balance system provided by the present application is shown in the figure. Figure 1 The local enlarged view of A in the figure.

[0021] Figure 3 The structural schematic diagram of the water outlet pump in the water level dynamic balance system provided by the present application is shown in the figure.

[0022] Explanation of the reference numerals:

[0023] 100, water level dynamic balance system; 10, dewatering well; 20, recharge well; 30, balancing device; 31, controller; 32, water pumping assembly; 321, water pumping pump; 322, water level sensor; 323, water storage tank; 324, water inlet pipe; 3241, water stop valve; 325, water outlet pipe; 3251, check valve; 3252, electromagnetic flowmeter; 326, water outlet pump; 327, filter element structure; 3271, activated carbon filter element layer; 3272, non-woven fabric filter element layer; 3273, primary filter element layer; 328, moving seat; 33, pressure booster.

[0024] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application, obviously, the described embodiments are only some embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0026] It should be noted that if the present application embodiments involve directional indications (such as up, down, left, right, front, back, …), the directional indications are only used to explain the relative position relationship, movement condition and the like between the components in a certain posture, if the certain posture changes, the directional indications also change accordingly.

[0027] In addition, if the description of "first", "second" and the like is involved in the embodiments of the utility model, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, if "and / or" or "and / or" appears throughout the text, it means that the three parallel schemes include "A and / or B", including A scheme, or B scheme, or A and B simultaneously satisfy the scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, also not within the protection scope required by the utility model.

[0028] In the current engineering construction field, foundation pit engineering is a crucial link. And in the foundation pit engineering, the dewatering of foundation pit is the premise to ensure that the foundation pit engineering can be carried out safely. At present, the dewatering of foundation pit usually adopts the way of including open ditch drainage, vacuum well point and deep well dewatering to discharge the underground water under the foundation pit. However, the dewatering of foundation pit by using these ways is easy to affect the water level balance of underground water around the foundation pit, especially in the area where the underground water resources are extremely rich, such as the water-rich spring area. Because the underground water content of the water-rich spring area is higher, so the discharge amount of underground water for the dewatering of foundation pit in the water-rich spring area is larger, and the larger discharge amount of underground water is easy to cause great influence on the water level balance of underground water of foundation pit and its surrounding stratum, leading to destroy the water level balance of underground water of foundation pit and its surrounding stratum.

[0029] The utility model provides a kind of water level dynamic balance system 100 of foundation pit.

[0030] Please refer to Figures 1 to 3In an embodiment of the utility model, the water level dynamic balance system 100 of this foundation pit includes precipitation well 10, recharge well 20 and balancing device 30, precipitation well 10 is set up in the foundation pit, and extends to the below of foundation pit, recharge well 20 is close to the foundation pit setting, and extends to the below of foundation pit, balancing device 30 includes controller 31, pumping unit 32 and pressurizer 33, pumping unit 32 includes water pump 321 and water level sensor 322, pressurizer 33, water pump 321 and water level sensor 322 all are connected with controller 31, water pump 321 and water level sensor 322 all are set up in precipitation well 10, water level sensor 322 is used to obtain the water level information in precipitation well 10 and sends it to controller 31, controller 31 is used to control water pump 321 to suck the water in precipitation well 10 according to water level information, and the part of water that is sucked out is filled to recharge well 20, and controller 31 is also used to control pressurizer 33 to pressurize to recharge well 20 according to water level information, to make the water in recharge well 20 seep to the below of foundation pit.

[0031] The technical scheme of the utility model through the precipitation well 10 in foundation pit excavation, install water level sensor 322 and water pump 321 in precipitation well 10, can obtain the water level information in precipitation well 10 through water level sensor 322, and controller 31 can control water pump 321 to suck the water in precipitation well 10 according to the water level information in precipitation well 10, that is, can complete the precipitation of foundation pit. And water pump 321 can fill the part of water that is sucked out to recharge well 20, then obtain the water level information of precipitation well 10 through water level sensor 322, and controller 31 can control pressurizer 33 to pressurize to recharge well 20 according to the water level information in precipitation well 10, to make the water in recharge well 20 seep from the gap of stratum, to supplement the groundwater of foundation pit and the stratum around foundation pit, to maintain the dynamic balance of groundwater of foundation pit and the stratum around foundation pit.

[0032] It should be noted that the interaction between controller 31, water pump 321, water level sensor 322 and pressurizer 33 uses existing technology.

[0033] Further, when water level sensor 322 obtains the water level information in precipitation well 10 higher than the preset range, then controller 31 controls water pump 321 to suck the water in precipitation well 10, to make the water level information drop to the preset range. When water level sensor 322 obtains the water level information in precipitation well 10 lower than the preset range, then controller 31 controls pressurizer 33 to pressurize to recharge well 20, to make the water level information rise to the preset range.

[0034] In an embodiment, the water pumping assembly 32 further comprises a water storage tank 323, which is respectively communicated with a water inlet pipe 324 and a water outlet pipe 325, the water inlet pipe 324 extends into the dewatering well 10 and is connected with the water pumping pump 321, the water outlet pipe 325 extends into the recharge well 20, and a water outlet pump 326 is installed on the water outlet pipe 325, and the water outlet pump 326 is in communication connection with the controller 31; the controller 31 can control the water pumping pump 321 to pump the water in the dewatering well 10 into the water storage tank 323 according to the water level information, and can control the water outlet pump 326 to pump the water in the water storage tank 323 into the recharge well 20.

[0035] Specifically, the water pumped out from the dewatering well 10 can be stored in the water storage tank 323, when the recharge well 20 needs to be pressurized, the water outlet pump 326 is controlled by the controller 31 to pump the water in the water storage tank 323 into the recharge well 20, so as to supplement the water in the recharge well 20, so that the recharge well 20 has sufficient water to supplement the underground water of the foundation pit and the surrounding underground water of the foundation pit, thereby the dynamic balance of the foundation pit and the surrounding stratum underground water can be more effectively maintained. And the water quality pumped into the recharge well 20 can be improved, thereby the pollution to the foundation pit and the surrounding stratum underground water can be reduced, and the environment is more friendly.

[0036] In an embodiment, a filter core structure 327 is arranged in the water outlet pump 326. By arranging the filter core structure 327 in the water outlet pump 326, the impurities in the water can be effectively prevented from blocking the water outlet pump 326, so as to improve the durability of the water outlet pump 326, thereby the durability and reliability of the water level dynamic balance system 100 of the foundation pit of the utility model can be improved.

[0037] In an embodiment, the filter core structure 327 comprises an activated carbon filter core layer 3271, a non-woven fabric filter core layer 3272 and a primary efficiency filter core layer 3273 which are arranged in layers.

[0038] Further, the multi-stage filter core structure 327 composed of the activated carbon filter core layer 3271, the non-woven fabric filter core layer 3272 and the primary efficiency filter core layer 3273 can perform multi-stage filtration on the water pumped into the recharge well 20 from the water storage tank 323, thereby the filtration effect can be further improved.

[0039] In an embodiment, a water stop valve 3241 and a one-way valve 3251 are respectively installed on the water inlet pipe 324 and the water outlet pipe 325.

[0040] Specifically, by arranging the water stop valve 3241 on the water inlet pipe 324, the water in the water storage tank 323 can be prevented from flowing back into the dewatering well 10, and by arranging the one-way valve 3251 on the water outlet pipe 325, the water in the recharge well 20 can be effectively prevented from flowing back into the water storage tank 323, thereby the reliability of the water level dynamic balance system 100 of the foundation pit of the utility model can be effectively ensured by the water stop valve 3241 and the one-way valve 3251.

[0041] In an embodiment, an electromagnetic flowmeter 3252 is arranged in the outlet pipe 325, and the electromagnetic flowmeter 3252 is used to detect the flow of water sucked into the recharge well 20 in the outlet pipe 325, and the electromagnetic flowmeter 3252 is electrically connected with the controller 31.

[0042] Specifically, the flow of water sucked into the recharge well 20 in the outlet pipe 325 can be detected by the electromagnetic flowmeter 3252, and the obtained flow is sent to the controller 31, and the controller 31 can control the outlet pump 326 to continue to be opened or closed according to the obtained flow, so as to avoid too much water being filled into the recharge well 20, and the reliability is higher. It should be noted that the interaction between the electromagnetic flowmeter 3252 and the controller 31 adopts the prior art.

[0043] In an embodiment, the bottom of the water storage tank 323 is further provided with a moving seat 328, and the moving seat 328 is used to drive the water storage tank 323 to move. By arranging the moving seat 328 at the bottom of the water storage tank 323, the water storage tank 323 can be moved more conveniently, so that the water storage tank 323 can be placed at a suitable position more conveniently.

[0044] In an embodiment, the water storage tank 323 is provided with filter material. The filter material in the water storage tank 323 can provide preliminary filtration for the water in the water storage tank 323, so as to further improve the water quality of the water in the water storage tank 323, to avoid that the water storage tank 323 is too turbid to cause the outlet pump 326 to be blocked, and the water quality of the water sucked into the recharge well 20 can be improved, so that the pollution to the foundation pit and the underground water of the surrounding stratum can be reduced, and the environment is more friendly.

[0045] In an embodiment, the bottom of the recharge well 20 is filled with filter stones. The filter stones at the bottom of the recharge well 20 can filter the water in the recharge well 20 to be infiltrated into the stratum, so that the pollution to the foundation pit and the underground water of the surrounding stratum can be reduced, and the environment is more friendly.

[0046] In an embodiment, the water level dynamic balance system 100 further comprises a terminal, and the terminal is in communication connection with the controller 31. The terminal can remotely control the controller 31, so as to control the water pump 321 and the pressure device 33 through the controller 31, thereby realizing remote control of the water level dynamic balance system 100 of the foundation pit provided by the utility model, and the utility model is more convenient. It should be noted that the interaction between the terminal and the controller 31 adopts the prior art.

[0047] The above description is only an exemplary embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation made by the utility model specification and the drawings, or direct / indirect application in other related technical fields is included in the patent protection range of the utility model.

Claims

1. A dynamic water level balancing system for a foundation pit, characterized in that, The water level dynamic balance system includes: A dewatering well is provided inside the foundation pit and extends to the bottom of the foundation pit; A recharge well is located close to the foundation pit and extends below the foundation pit; The balancing device includes a controller, a pumping assembly, and a pressurizer. The pumping assembly includes a pump and a water level sensor. The pressurizer, the pump, and the water level sensor are all communicatively connected to the controller. The pump and the water level sensor are both located inside the dewatering well. The water level sensor acquires water level information from the dewatering well and sends it to the controller. The controller controls the pump to draw water out of the dewatering well based on the water level information and injects a portion of the drawn water into the recharge well. The controller also controls the pressurizer to pressurize the recharge well based on the water level information, so that water in the recharge well seeps into the lower part of the foundation pit.

2. The dynamic water level balancing system for the foundation pit as described in claim 1, characterized in that, The pumping assembly also includes a water storage tank, which is connected to an inlet pipe and an outlet pipe. The inlet pipe extends into the dewatering well and is connected to the pumping pump. The outlet pipe extends into the reinjection well and is equipped with an outlet pump, which is communicatively connected to the controller. The controller can control the pumping pump to draw water from the dewatering well to the water storage tank based on the water level information, and can also control the outlet pump to draw water from the water storage tank to the reinjection well.

3. The dynamic water level balancing system for the foundation pit as described in claim 2, characterized in that, The water pump is equipped with a filter element structure.

4. The dynamic water level balancing system for the foundation pit as described in claim 3, characterized in that, The filter element structure includes a stacked activated carbon filter element layer, a non-woven fabric filter element layer, and a pre-filter element layer.

5. The dynamic water level balancing system for the foundation pit as described in claim 2, characterized in that, A stop valve and a check valve are respectively installed on the inlet pipe and the outlet pipe.

6. The dynamic water level balancing system for the foundation pit as described in claim 2, characterized in that, An electromagnetic flow meter is installed inside the outlet pipe. The electromagnetic flow meter is used to detect the flow rate of water drawn from the outlet pipe into the reinjection well. The electromagnetic flow meter is electrically connected to the controller.

7. The dynamic water level balancing system for the foundation pit as described in claim 2, characterized in that, The bottom of the water storage tank is also provided with a movable base, which is used to move the water storage tank.

8. The dynamic water level balancing system for the foundation pit as described in claim 2, characterized in that, The water storage tank is equipped with filter media.

9. The dynamic water level balancing system for the foundation pit as described in any one of claims 1 to 8, characterized in that, The bottom of the recharge well is filled with filter stone.

10. The dynamic water level balancing system for a foundation pit as described in any one of claims 1 to 8, characterized in that, The water level dynamic balancing system also includes a terminal, which is communicatively connected to the controller.

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