Groundwater pressure monitoring device

Abstract

The utility model relates to a groundwater pressure monitoring device relates to pressure detection technical field. The groundwater pressure monitoring device is used for monitoring the water pressure of raft bottom, including first pressure monitoring box, data analysis device and the first pipeline of intercommunication first pressure monitoring box and data analysis device, first pressure monitoring box and data analysis device are used for setting respectively in the opposite sides of raft, first pressure monitoring box is submerged in groundwater, and first pressure monitoring box is used for setting first conductive solution, and first pressure monitoring box can change with the pressure variation of groundwater, so that the liquid level change of first conductive solution in data analysis device through first pipeline. The groundwater pressure monitoring device can monitor the water pressure of raft bottom in real time, thereby being convenient for the review to engineering integral model.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pressure detection, in particular to a groundwater pressure monitoring device. BACKGROUND

[0002] Raft foundation is composed of bottom plate, beam and the like. When the upper load of a building is large and the bearing capacity of the foundation is weak, simple independent foundation or strip foundation cannot meet the needs of foundation deformation, and the foundations under walls or columns are connected into a whole, so that the load of the whole building is borne on an integral plate. This full-board plate foundation is called raft foundation. Raft foundation can reduce the base pressure due to its large bottom area, improve the bearing capacity of the foundation, and effectively enhance the integrity of the foundation, and well resist uneven settlement of the foundation.

[0003] However, for buildings using raft foundation, the underground water level under the large raft is not completely in functional relationship with the water head height and the underground water level. However, for the overall safety of underground engineering, it is very important to real-time master the pressure condition of the underground water level and review the overall model of the engineering to ensure the structural safety of the weak area. Therefore, how to real-time monitor the pressure of the underground water level becomes a technical problem to be solved. SUMMARY

[0004] The purpose of the present application is to provide a groundwater pressure monitoring device which can real-time monitor the water pressure at the bottom of the raft, thereby facilitating the review of the overall model of the engineering.

[0005] The embodiment of the present application is implemented as follows:

[0006] The present application provides a groundwater pressure monitoring device for monitoring the water pressure at the bottom of the raft, which comprises a first pressure monitoring box, a data analysis device and a first pipeline connecting the first pressure monitoring box and the data analysis device. The first pressure monitoring box and the data analysis device are arranged on opposite sides of the raft, respectively. The first pressure monitoring box is immersed in underground water, and a first conductive solution is arranged in the first pressure monitoring box. The first pressure monitoring box can change with the pressure of the underground water, so that the liquid level of the first conductive solution entering the data analysis device through the first pipeline changes. The groundwater pressure monitoring device can real-time monitor the water pressure at the bottom of the raft, thereby facilitating the review of the overall model of the engineering.

[0007] In one embodiment, the first pressure monitoring box is a cross-shaped monitoring box.

[0008] In one embodiment, the groundwater pressure monitoring device further comprises a first isolation mesh shell wrapped outside the first pressure monitoring box, and the first isolation mesh shell is made of hard composite material.

[0009] In one embodiment, the first conductive solution is a sodium sulfate solution.

[0010] In one embodiment, the material of the first pressure monitoring box is stainless steel.

[0011] In one embodiment, the groundwater pressure monitoring device further comprises a second pressure monitoring box and a second pipeline connecting the second pressure monitoring box and the data analysis device, the second pressure monitoring box is immersed in the groundwater, a second conductive solution is arranged in the second pressure monitoring box, and the second pressure monitoring box can change with the temperature change of the groundwater, so that the liquid level of the second conductive solution entering the data analysis device through the second pipeline changes.

[0012] In one embodiment, the second pressure monitoring box is a spherical monitoring box.

[0013] In one embodiment, the groundwater pressure monitoring device further comprises a second isolation mesh shell wrapped outside the second pressure monitoring box, and the second isolation mesh shell is made of cast iron material.

[0014] In one embodiment, a copper scrap filling layer is arranged between the second isolation mesh shell and the second pressure monitoring box.

[0015] In one embodiment, the first pipeline is arranged in the raft, and a water stop ring is arranged on the first pipeline to prevent the groundwater from leaking.

[0016] The beneficial effects of the present application include:

[0017] The underground water pressure monitoring device provided by the application is used for monitoring the water pressure at the bottom of the raft, and comprises a first pressure monitoring box, a data analysis device and a first pipeline connecting the first pressure monitoring box and the data analysis device. The first pressure monitoring box and the data analysis device are arranged on opposite sides of the raft respectively, the first pressure monitoring box is immersed in underground water, a first conductive solution is arranged in the first pressure monitoring box, and the first pressure monitoring box can change with the pressure of the underground water so that the liquid level of the first conductive solution entering the data analysis device through the first pipeline changes. In this way, the first conductive solution in the first pressure monitoring box of the application can enter the data analysis device from the first pipeline under the action of the pressure of the underground water, the data analysis device analyzes the change of the liquid level or the change of the volume of the first conductive solution in the data analysis device, thereby obtaining the corresponding pressure of the underground water, so that the underground water at the bottom of the raft is monitored in real time, and the overall model of the project is reviewed, thereby ensuring the structural safety of the weak area of the raft and improving the overall safety of the underground project. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0019] Figure 1 The structural schematic diagram of the underground water pressure monitoring device provided by the embodiments of the application is shown in the figure.

[0020] Figure 2 The principle diagram of the data analysis device of the underground water pressure monitoring device provided by the embodiments of the application is shown in the figure.

[0021] Figure: 10-first pipeline; 20-first pressure monitoring box; 21-first conductive solution; 22-first isolation net shell; 30-raft; 40-data analysis device; 50-second pressure monitoring box; 51-second conductive solution; 52-second isolation net shell; 60-second pipeline; 70-copper scrap filling layer; 80-water stop ring. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the application more clear, the technical solutions in the embodiments of the application will be described clearly and completely below in combination with the drawings in the embodiments of the application. Obviously, the described embodiments are some embodiments of the application, not all embodiments. The components of the embodiments of the application described and shown in the drawings here can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the application provided in the drawings is not intended to limit the scope of the application claimed, but merely represents selected embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the application.

[0024] It should be noted that similar reference numbers and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

[0025] In the description of the application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the application is normally placed, and are merely for the convenience of describing the application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application. In addition, the terms "first", "second", "third", and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0026] In addition, the terms "horizontal", "vertical", and the like do not mean that the components must be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only means that it is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0027] In the description of the application, it should also be noted that unless otherwise explicitly specified and limited, the terms "provided", "mounted", "connected", "connected" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements inside. For those of ordinary skill in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0028] Since the water level of underground water is not completely in a functional relationship with the water head height and the underground water level under the lower part of the large amount of raft 30, it is difficult to obtain real-time data of the underground water level under the influence of the load of the raft 30 itself and the geology. In order to monitor the water pressure at the bottom of the raft 30 in real time, thereby facilitating the review of the overall model of the project, to ensure the structural safety of the weak area and the overall safety of the underground engineering, the application provides an underground water pressure monitoring device, which aims to monitor the pressure of underground water at a certain place of the raft 30 by using a dynamic monitoring method, so as to obtain more accurate pressure data of underground water.

[0029] Please refer to Figure 1 and Figure 2 , the embodiment provides a groundwater pressure monitoring device, which is used for monitoring the water pressure at the bottom of the raft 30. Specifically, the groundwater pressure monitoring device comprises a first pressure monitoring box 20, a data analysis device 40 and a first pipeline 10 connecting the first pressure monitoring box 20 and the data analysis device 40, the first pressure monitoring box 20 and the data analysis device 40 are arranged on opposite sides of the raft 30 respectively, the first pressure monitoring box 20 is immersed in the groundwater, a first conductive solution 21 is arranged in the first pressure monitoring box 20, and the first pressure monitoring box 20 can change with the pressure of the groundwater, so that the liquid level of the first conductive solution 21 entering the data analysis device 40 through the first pipeline 10 changes.

[0030] It should be noted that first, the groundwater pressure monitoring device provided by the application is mainly used for monitoring the water pressure at the bottom of the raft 30, so as to realize real-time monitoring of the buoyancy borne by the raft 30 itself. It should be understood that monitoring the water pressure at the bottom of the raft 30 is only an example of an application scenario of the groundwater pressure monitoring device of the application, and is not a limitation on the use of the groundwater pressure monitoring device of the application. The groundwater pressure monitoring device of the application can also be applied to other scenarios, and the embodiment of the application is described and explained by taking the monitoring of the water pressure at the bottom of the raft 30 as an example.

[0031] Secondly, the first water pressure monitoring box and the data analysis device 40 are arranged on opposite sides of the raft 30 respectively, and the first water pressure monitoring box is immersed in the groundwater. In this way, the change of the liquid level or the change of the volume of the liquid of the first conductive solution 21 in the first water pressure monitoring box entering the data analysis device 40 can obtain the water pressure at the bottom of the raft 30.

[0032] The data analysis device 40 is used for obtaining the water pressure at the bottom of the raft 30 by analyzing the change of the liquid level or the change of the volume of the liquid of the first conductive solution 21 entering the data analysis device 40. For example, the data analysis device 40 can refer to Figure 2 as shown, Figure 2For the schematic diagram of the data analysis device 40, the data analysis device 40 of the present application can change the liquid level of the first conductive solution 21 into the data analysis device 40, so that the resistance of the liquid level resistance R4 changes; through the corresponding circuit relationship, the corresponding voltage value can be obtained, and the voltage value is converted into the corresponding pressure information through certain analysis and calculation. It should be understood that the above schematic diagram is only one embodiment of the data analysis device 40 of the present application, and is not a limitation on the implementation principle of the data analysis device 40 of the present application. As long as the water pressure at the bottom of the raft 30 can be obtained through the change of the liquid level or the change of the liquid volume of the first conductive solution 21, other implementation principles can also be used by those skilled in the art.

[0033] Third, one end of the first pipeline 10 is in communication with the first pressure monitoring box 20, and the other end is in communication with the data monitoring device. In this way, the first conductive solution 21 in the first pressure monitoring box 20 can enter the data analysis device 40 under the action of the underground water pressure, so that the pressure of the underground water can be obtained through the analysis and calculation of the data analysis device 40.

[0034] Specifically, in the present embodiment, the first pipeline 10 is arranged in the raft 30, that is, the first pipeline 10 is arranged in the raft 30, and the two ends respectively extend from the opposite sides of the raft 30, one end of which extends to the side of the raft 30 close to the data analysis device 40 for communication with the data analysis device 40, and the other end extends into the underground water for communication with the first pressure monitoring box 20. In this way, the first conductive solution 21 of the present application can smoothly enter the data analysis device 40 from the first pressure monitoring box 20.

[0035] In order to prevent the underground water from leaking into the basement along the pipe wall of the first pipeline 10, in the present embodiment, a water stop ring 80 is further sleeved on the first pipeline 10.

[0036] Fourth, the first conductive solution 21 is used to facilitate the data analysis device 40 to grasp the change of the liquid level or the change of the liquid volume in real time, and then analyze the change of the water pressure corresponding to the change of the liquid level or the change of the liquid volume. In the present embodiment, the first conductive solution 21 is sodium sulfate solution. Of course, it should be understood that the sodium sulfate solution is only an example of the first conductive solution 21, and other conductive solutions can also be used in other embodiments, as long as they can facilitate the analysis of the data analysis device 40.

[0037] In summary, the groundwater pressure monitoring device provided by the application is used for monitoring the water pressure at the bottom of the raft 30, and comprises a first pressure monitoring box 20, a data analysis device 40, and a first pipeline 10 connecting the first pressure monitoring box 20 and the data analysis device 40. The first pressure monitoring box 20 and the data analysis device 40 are arranged on opposite sides of the raft 30 respectively, the first pressure monitoring box 20 is immersed in the groundwater, the first pressure monitoring box 20 is provided with a first conductive solution 21, and the first pressure monitoring box 20 can change with the pressure of the groundwater, so that the liquid level of the first conductive solution 21 entering the data analysis device 40 through the first pipeline 10 changes. In this way, the first conductive solution 21 of the first pressure monitoring box 20 of the application can enter the data analysis device 40 from the first pipeline 10 under the action of the pressure of the groundwater, and the data analysis device 40 can obtain the corresponding pressure of the groundwater by analyzing the change of the liquid level or the change of the volume of the first conductive solution 21 in the data analysis device 40, so that the groundwater at the bottom of the raft 30 can be monitored in real time, and the overall model of the project can be reviewed, so as to ensure the structural safety of the weak area of the raft 30 and improve the overall safety of the underground project.

[0038] Optionally, in order to facilitate the groundwater to better contact each side of the first pressure monitoring box 20, thereby improving the groundwater pressure sensing capability of the first pressure monitoring box 20, in the embodiment, the first pressure monitoring box 20 provided by the application is a cross-shaped monitoring box. The cross-shaped monitoring box can make the action of the first conductive solution 21 more obvious under the action of the pressure of the groundwater.

[0039] Further, the groundwater pressure monitoring device provided by the application further comprises a first isolation mesh shell 22 wrapped outside the first pressure monitoring box 20, and the first isolation mesh shell 22 is made of a hard composite material. In this way, the first isolation mesh shell 22 can separate the contact between the first pressure monitoring box 20 and the soil body, and at the same time can make the groundwater completely infiltrate to each outer side of the first pressure monitoring box 20.

[0040] The first isolation mesh shell 22 is made of a hard composite material. For example, it can be a hard composite fiber material. Of course, the first isolation mesh shell 22 of the application can also select other hard composite materials according to the technical personnel in the art, which is not limited here.

[0041] Optionally, in the embodiment, the material of the first pressure monitoring box 20 is selected to be stainless steel. Preferably, the first pressure monitoring box 20 of the application adopts a thin-walled stainless steel monitoring box. In addition to stainless steel, the first pressure monitoring box 20 can also select other rust-proof and light composite materials.

[0042] Further, the groundwater pressure monitoring device of the present application further comprises a second pressure monitoring box 50 and a second pipeline 60 connecting the second pressure monitoring box 50 and the data analysis device 40, the second pressure monitoring box 50 is submerged in the groundwater, a second conductive solution 51 is arranged in the second pressure monitoring box 50, and the second pressure monitoring box 50 can change with the temperature of the groundwater, so that the liquid level of the second conductive solution 51 entering the data analysis device 40 through the second pipeline 60 changes.

[0043] It should be noted that, first, the second pressure monitoring box 50 is used to analyze the pressure difference caused by temperature change, and the data of the first pressure monitoring box 20 is comprehensively analyzed, so as to eliminate the influence of temperature on the pressure of the groundwater, and make the obtained pressure of the groundwater more accurate.

[0044] Second, the second conductive solution 51 is used to facilitate the data analysis device 40 to grasp the change of the liquid level or the change of the volume of the liquid in real time, and then analyze the change of the water pressure corresponding to the change of the liquid level or the volume of the liquid. Preferably, the second conductive solution 51 also adopts sodium sulfate solution. Of course, it should be understood that the sodium sulfate solution is only an example of the conductive solution, and in other embodiments, other conductive solutions can also be used as long as they can facilitate the analysis of the data analysis device 40.

[0045] Third, the second water pressure monitoring box and the data analysis device 40 are respectively arranged on opposite sides of the raft 30, and the second water pressure monitoring box is submerged in the groundwater, so that the change of the liquid level or the change of the volume of the liquid of the second conductive solution 51 in the second water pressure monitoring box entering the data analysis device 40 can obtain the change of the pressure of the groundwater at the bottom of the raft 30 with the change of the temperature. That is, by analyzing and calculating the change of the liquid level or the change of the volume of the liquid of the first conductive solution 21 entering the data analysis device 40 and the change of the liquid level or the change of the volume of the liquid of the second conductive solution 51 entering the data analysis device 40, the water pressure of the groundwater under the joint action of the pressure of the groundwater and the temperature and the water pressure of the groundwater under the action of the temperature are obtained. Thus, the water pressure value of the groundwater without the interference of the temperature is obtained through certain analysis and calculation.

[0046] Specifically, the above-mentioned data analysis device 40 can obtain the water pressure value under the joint action of the pressure of the groundwater and the temperature and the water pressure under the action of the temperature by analyzing the change of the liquid level or the change of the volume of the liquid of the first conductive solution 21 entering the data analysis device 40 and the change of the liquid level or the change of the volume of the liquid of the second conductive solution 51 entering the data analysis device 40, respectively, so as to obtain the water pressure value without the interference of the temperature through difference operation. The water pressure value without the interference of the temperature can also be obtained through certain circuit relationship.

[0047] For example, when current passes through two water pressure monitoring boxes, different voltages can be obtained due to the different values ​​of R3 and R4. The voltage difference is obtained through difference calculation. Based on the voltage difference, the resistance difference of the conductive solution is calculated as R = ΔU / I. The resistance difference is proportional to the liquid volume in the water pressure monitoring box, V = R / (S×A), where S is the resistivity, which is obtained experimentally based on the concentration of sodium sulfate solution, and A is the cross-sectional area of ​​the conduit of the water pressure monitoring box. Then, the water pressure and buoyancy value at the bottom of the raft can be obtained as P = (V / S)×g, where V is the change in liquid volume, S is the effective contact area between the first pressure box and the groundwater, and P is the buoyancy value per unit area.

[0048] For example, when obtaining the water pressure value after removing the interference of temperature through a certain circuit relationship, the data analysis device 40 can refer to... Figure 2 As shown, Figure 2 The above schematic diagram illustrates the data analysis device 40. In this application, the data analysis device 40 utilizes the change in liquid level caused by the first conductive solution 21 entering the data analysis device 40, which causes a change in the resistance of the liquid level resistor R4. Similarly, the change in liquid level caused by the second conductive solution 51 entering the data analysis device 40 causes a change in the resistance of the liquid level resistor R3. Through the corresponding circuit relationships, the voltage difference between the liquid level resistors R3 and R4 can be obtained, and this voltage difference is converted into corresponding pressure information through certain analysis and calculations. It should be understood that the above schematic diagram is merely one embodiment of the data analysis device 40 provided in this application and is not intended to limit the implementation principle of the data analysis device 40.

[0049] Optionally, in order to minimize the impact of groundwater pressure on the second pressure monitoring box 50 and improve the monitoring accuracy of this application, in this embodiment, the second pressure monitoring box 50 is a spherical monitoring box.

[0050] Furthermore, the groundwater pressure monitoring device also includes a second isolation mesh shell 52, which is made of cast iron and encloses the second pressure monitoring box 50. In this way, the second isolation mesh shell 52 can isolate the second pressure monitoring box 50 from the soil while allowing groundwater to completely soak into the outer surface of the second pressure monitoring box 50. The cast iron material of the second isolation mesh shell 52 can, to a certain extent, protect the second pressure monitoring box 50 from the pressure of groundwater.

[0051] Optionally, in the embodiment, a copper scrap filling layer 70 is arranged between the second isolation mesh shell 52 and the second pressure monitoring box 50. It should be noted that the copper scrap is used for temperature transmission but not force transmission, and in the case that the second isolation mesh shell 52 is deformed due to temperature change, the copper scrap can be compressed or loosened, and the internal detection box will not be stressed. The copper has good heat conduction performance, and can effectively transmit temperature.

[0052] In order to prevent the underground water from leaking into the basement along the pipe wall of the second pipeline 60, in the embodiment, the second pipeline 60 is also sleeved with a water stop ring 80.

[0053] The above only describes optional embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A groundwater pressure monitoring device for monitoring water pressure at the bottom of a raft, characterized in that, The device includes a first pressure monitoring box, a data analysis device, and a first pipe connecting the first pressure monitoring box and the data analysis device. The first pressure monitoring box and the data analysis device are respectively installed on opposite sides of the raft. The first pressure monitoring box is submerged in groundwater. A first conductive solution is placed inside the first pressure monitoring box. The first pressure monitoring box can change with the pressure of the groundwater to change the liquid level of the first conductive solution entering the data analysis device through the first pipe. The groundwater pressure monitoring device further includes a second pressure monitoring box and a second pipe connecting the second pressure monitoring box and the data analysis device. The second pressure monitoring box and the data analysis device are respectively placed on opposite sides of the raft. The second pressure monitoring box is submerged in the groundwater. A second conductive solution is placed inside the second pressure monitoring box. The second pressure monitoring box can change with the temperature of the groundwater to change the liquid level of the second conductive solution entering the data analysis device through the second pipe. This allows for the acquisition of the groundwater pressure changes at the bottom of the raft due to temperature changes. Furthermore, by analyzing and calculating the changes in the liquid level or volume of the first conductive solution entering the data analysis device, and the changes in the liquid level or volume of the second conductive solution entering the data analysis device, the groundwater pressure under the combined action of groundwater pressure and temperature, as well as the groundwater pressure under the action of temperature alone, can be obtained.

2. The groundwater pressure monitoring device according to claim 1, characterized in that, The first pressure monitoring box is a cross-shaped monitoring box.

3. The groundwater pressure monitoring device according to claim 1, characterized in that, The groundwater pressure monitoring device also includes a first isolation mesh shell that surrounds the first pressure monitoring box, and the first isolation mesh shell is made of rigid composite material.

4. The groundwater pressure monitoring device according to claim 1, characterized in that, The first conductive solution is a sodium sulfate solution.

5. The groundwater pressure monitoring device according to claim 1, characterized in that, The first pressure monitoring box is made of stainless steel.

6. The groundwater pressure monitoring device according to claim 1, characterized in that, The second pressure monitoring box is a spherical monitoring box.

7. The groundwater pressure monitoring device according to claim 1, characterized in that, The groundwater pressure monitoring device also includes a second isolation mesh shell that surrounds the second pressure monitoring box, and the second isolation mesh shell is made of cast iron.

8. The groundwater pressure monitoring device according to claim 7, characterized in that, A copper shavings filling layer is provided between the second isolation mesh shell and the second pressure monitoring box.

9. The groundwater pressure monitoring device according to claim 1, characterized in that, The first pipe passes through the raft and is fitted with a water-stop ring to prevent the groundwater from leaking.

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