Settlement monitoring system and underground space monitoring device

Abstract

The utility model relates to a settlement monitoring system and an underground space monitoring device.The underground space monitoring device comprises a plurality of point position pressure sensors, first measuring cavities of the point position pressure sensors are located on the upper side of a first pressure sensitive part, and a water accumulation acting cavity is formed in the lower side of the first pressure sensitive part; the first sensor shell is provided with a first measuring channel used for leading accumulated water at the measuring points into the accumulated water acting cavity, the settlement monitoring system further comprises accumulated water monitoring sensors arranged at the measuring points, and each accumulated water monitoring sensor comprises a second sensor shell; the second sensor shell is provided with a second measuring cavity communicated with the external atmosphere through an air pipe, the lower end of the second measuring cavity is provided with a second pressure-sensitive part arranged at the same height as the first pressure-sensitive part, and the lower end of the second pressure-sensitive part is used for making contact with accumulated water. The settlement monitoring system provided by the utility model can be used for judging accumulated water and monitoring the settlement value of a measuring point in an accumulated water environment.

Description

Technical Field

[0001] The utility model relates to a settling and water accumulation monitoring device in an underground space, in particular to a settling monitoring system and an underground space monitoring device. Background Art

[0002] In the prior art, a static level is usually used to complete settlement monitoring of certain measuring points. The static level is essentially a pressure measuring device that can detect the pressure difference between the corresponding measuring point and the standard point.

[0003] When in use, a static level is set at each measuring point, a standard static level is placed at a position where no settlement will occur, the measuring cavities of the standard static levels are connected through water pipes, and then liquid is poured into the measuring cavities. Initially, due to the height difference between the standard static level and the static level, there will be a pressure difference between the standard static level and the static level due to the height difference. If settlement occurs at a certain measuring point, the height difference between the static level at the measuring point and the standard static level will become larger, and the pressure difference will become larger. According to this pressure difference, the descent height of the static level, that is, the settlement height, can be calculated.

[0004] However, the existing settlement monitoring system is only suitable for use in environments above the surface where water accumulation is not likely to occur. On the one hand, this is because the settlement monitoring system does not have the ability to judge water accumulation. On the other hand, when used in an environment where settlement needs to be monitored in underground space, water accumulation is likely to occur underground. The accumulation of water will affect pressure-sensitive components from the outside, thereby affecting the pressure measurement of the most red hydrostatic level and affecting the accurate calculation of the settlement value. Utility Model Content

[0005] The purpose of the utility model is to provide a settlement monitoring system which can judge water accumulation and monitor the settlement value of the measuring point in a water accumulation environment; the purpose of the utility model is to provide an underground space monitoring device used in the settlement monitoring system.

[0006] In order to solve the above technical problems, a technical solution of a settlement monitoring system in the utility model is as follows:

[0007] A settlement monitoring system includes an underground space monitoring device, the underground space monitoring device includes a plurality of point pressure sensors respectively used to be set at corresponding measuring points when in use, the point pressure sensor includes a first sensor housing, a first measuring cavity for containing liquid is arranged in the first sensor housing, a first pressure sensitive component is arranged on the first measuring cavity, the underground space monitoring device also includes a standard pressure sensor with a height higher than the point pressure sensor, the measuring cavity of the standard pressure sensor is connected to the first measuring cavity of each point pressure sensor through a pipeline, and is characterized in that: the first measuring cavity of the point pressure sensor is located at the first pressure sensitive component The upper side of the first pressure-sensitive component has a water accumulation action chamber on the lower side. The first pressure-sensitive component is a diaphragm structure that can elastically deform in the up and down directions. The first sensor housing is provided with a first measuring channel for introducing water accumulated at the measuring point into the water accumulation action chamber. The settlement monitoring system also includes a water accumulation monitoring sensor arranged at each measuring point. The water accumulation monitoring sensor includes a second sensor housing. The second sensor housing has a second measuring chamber connected to the external atmosphere through an air pipe. The lower end of the second measuring chamber has a second pressure-sensitive component arranged at the same height as the first pressure-sensitive component. The lower end of the second pressure-sensitive component is used to contact with the accumulated water.

[0008] Furthermore, a first liquid port and a second liquid port connected to the first measuring cavity are provided on the first sensor housing, and the pipeline connects the corresponding two liquid ports of two adjacent point pressure sensors in series.

[0009] Furthermore, the monitoring point has a mounting interface for mounting a point pressure sensor, and the lower end of the first pressure sensitive component is not higher than the height of the mounting interface.

[0010] Furthermore, a filter screen and a channel valve are provided on the first measuring channel.

[0011] Furthermore, a calibration hole for detachable insertion with a standard pressure gauge connector is provided on the channel wall of the first measuring channel, a calibration hole end cover is provided on the calibration hole, and the calibration hole is located between the channel valve and the first pressure sensitive component.

[0012] The technical solution of the underground space monitoring device in the utility model is:

[0013] An underground space monitoring device includes a plurality of point pressure sensors which are respectively used to be set at corresponding measuring points when in use. The point pressure sensors include a first sensor housing, a first measuring cavity for containing liquid is arranged in the first sensor housing, and a first pressure sensitive component is arranged on the first measuring cavity. The underground space monitoring device also includes a standard pressure sensor which is higher than the point pressure sensor. The measuring cavity of the standard pressure sensor is connected to the first measuring cavity of each point pressure sensor through a pipeline. The first measuring cavity of the point pressure sensor is located on the upper side of the first pressure sensitive component. The lower side of the first pressure sensitive component has a water accumulation action cavity. The first pressure sensitive component is a diaphragm structure which can be elastically deformed in the up and down directions. The first sensor housing is provided with a first measuring channel for introducing water accumulated at the measuring point into the water accumulation action cavity.

[0014] Furthermore, a first liquid port and a second liquid port connected to the first measuring cavity are provided on the first sensor housing, and the pipeline connects the corresponding two liquid ports of two adjacent point pressure sensors in series.

[0015] Furthermore, the monitoring point has a mounting interface for mounting a point pressure sensor, and the lower end of the first pressure sensitive component is not higher than the height of the mounting interface.

[0016] Furthermore, a filter screen and a channel valve are provided on the first measuring channel.

[0017] Furthermore, a calibration hole for detachably inserting and plugging with a standard pressure gauge joint is also provided on the channel wall of the first measuring channel, and a calibration hole end cover is provided on the calibration hole, and the calibration hole is located between the channel valve and the first pressure sensitive component.

[0018] The beneficial effects of the utility model are as follows: the settlement monitoring system in the utility model can realize the following monitoring modes: 1. When there is no settlement but only water accumulation, the point pressure sensor can be used to determine that there is no settlement, and the water accumulation pressure will act on the second pressure-sensitive component of the water accumulation monitoring sensor. The depth of the water accumulation can be determined by the pressure reading of the water accumulation pressure sensor; 2. When there is no water accumulation but only settlement, the reading of the water accumulation pressure sensor remains unchanged, and it can be determined that there is no water accumulation underground. The settlement value of the corresponding measuring point can be measured by the point pressure sensor; 3. When both settlement and water accumulation occur underground, the values ​​of the point pressure sensor and the water accumulation pressure sensor change at the same time, and the reading of the water accumulation pressure sensor can determine the depth of the water accumulation. At the same time, the reading of the water accumulation pressure sensor also represents the pressure value of the water accumulation on the second pressure-sensitive component, which is the same as the pressure value of the water accumulation on the first pressure-sensitive component. Taking this pressure value into consideration, the accurate settlement value of the corresponding measuring point can be determined by the reading of the point pressure sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present disclosure will become readily understood. In the accompanying drawings, several embodiments of the present disclosure are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0020] Figure 1 It is a structural schematic diagram of an embodiment of a settlement monitoring system in the utility model;

[0021] Figure 2 yes Figure 1 Schematic diagram of the structure of a single point pressure sensor;

[0022] Figure 3 yes Figure 2 AA section view;

[0023] Figure 4 yes Figure 3 Schematic diagram of the calibration process of the midpoint pressure sensor;

[0024] Explanation of the accompanying drawings: 1. Water tank; 2. Standard pressure sensor; 3. Point pressure sensor; 4. Pipeline; 5. Installation interface; 6. First sensor housing; 7. First measuring chamber; 8. Water accumulation chamber; 9. First pressure sensitive component; 10. First liquid port; 11. Second liquid port; 12. Air pipe; 13. Second measuring chamber; 14. Second pressure sensitive component; 15. Filter; 16. Channel valve; 17. Calibration hole; 18. Standard pressure gauge connector; 19. Standard pressure gauge; 20. Water pipe; 21. First measuring channel; 22. Second measuring channel. DETAILED DESCRIPTION

[0025] In order to facilitate the understanding of the present invention, the present invention is described in more detail below in conjunction with the accompanying drawings and specific embodiments. The accompanying drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0026] It should be noted that, unless otherwise defined, all technical and scientific terms used in this specification have the same meanings as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0027] In the present utility model, a settlement monitoring system is implemented as follows: Figures 1 to 4As shown: it includes an underground space monitoring device, which includes a plurality of point pressure sensors 3 which are respectively used to be set at corresponding measuring points when in use. In this embodiment, the number of the point pressure sensors 3 is not less than three.

[0028] The point pressure sensor 3 includes a first sensor housing 6, a first measuring cavity 7 for containing liquid is provided in the first sensor housing 6, a first pressure sensitive component 9 is provided on the first measuring cavity 7, and the underground space monitoring device also includes a standard pressure sensor 2 with a height higher than the point pressure sensor, the structure of the standard pressure sensor 2 is the same as that of the point pressure sensor 3, and the measuring cavity of the standard pressure sensor is connected to the first measuring cavity of each point pressure sensor through a pipeline. In this embodiment, a first liquid port 10 and a second liquid port 11 connected to the first measuring cavity are provided on the left and right opposite shell walls of the first sensor housing, and the pipeline 4 connects the corresponding two liquid ports of two adjacent point pressure sensors in series.

[0029] The first measuring chamber 7 of the point pressure sensor is located on the upper side of the first pressure-sensitive component 9, and the lower side of the first pressure-sensitive component is provided with a water accumulation action chamber 8. The first pressure-sensitive component 9 is a diaphragm structure that can be elastically deformed in the up and down directions. The first sensor housing is provided with a first measuring channel 21 for introducing the accumulated water at the measuring point into the water accumulation action chamber. The sedimentation monitoring system also includes a water accumulation monitoring sensor arranged at each measuring point. The water accumulation monitoring sensor includes a second sensor housing, and the second sensor housing has a second measuring chamber 13 connected to the external atmosphere through an air pipe 12. The lower end of the second measuring chamber has a second pressure-sensitive component 14 arranged at the same height as the first pressure-sensitive component. The second pressure-sensitive component is a diaphragm that can be elastically deformed in the up and down directions, and the lower end of the second pressure-sensitive component 14 is used to contact with the accumulated water.

[0030] That is to say, the water accumulation monitoring sensor and point pressure sensor in the utility model are both diaphragm pressure sensors, which characterize the pressure on the corresponding surface of the diaphragm by converting the elastic deformation amplitude of the diaphragm in the up and down directions into an electrical signal, and then calculate the liquid pressure at the diaphragm according to the bearing area of ​​the diaphragm. The diaphragm pressure sensor belongs to the prior art, and its structure will not be described in detail here. The water accumulation monitoring sensor in the utility model is a single-sided pressure-type diaphragm pressure sensor. When there is water accumulation, the pressure of the accumulated water acts on the second pressure-sensitive component from bottom to top, thereby measuring the corresponding depth of the accumulated water; the point pressure sensor is a double-sided pressure-type diaphragm pressure sensor. When the pressure on the upper side of the first pressure-sensitive component is large, the first pressure-sensitive component elastically deforms downward, and when the pressure on the lower side of the first pressure-sensitive component is large, the second pressure-sensitive component elastically deforms upward.

[0031] In this embodiment, the first sensor housing 6 and the second sensor housing are integrally formed, that is, the water accumulation monitoring sensor and the corresponding point pressure sensor are integrated together, and the underground space, such as an underground warehouse, an underground waterway, etc., has an installation interface 5 for installing the point pressure sensor, and the lower end of the first pressure sensitive component is not higher than the height of the installation interface 5, which can ensure sensitive measurement of water accumulation. In other embodiments of the utility model, the water accumulation monitoring sensor and the corresponding point pressure sensor can also be separately set.

[0032] The first measuring channel 21 is provided with a filter screen 15 and a channel valve 16 . The first sensor housing 6 is provided with a second measuring channel 22 on the opposite side of the first measuring channel. The second measuring channel 22 is communicated with the lower side of the second pressure sensitive component 14 .

[0033] The channel wall of the first measuring channel is also provided with a calibration hole 17 for detachably inserting with a standard pressure gauge connector. The calibration hole is vertically arranged and provided with a calibration hole end cover. The calibration hole is located between the channel valve and the first pressure sensitive component. Before the point pressure sensor is used, no liquid is introduced into the first measuring cavity 7. The channel valve 16 is closed, the calibration hole end cover is opened, the standard pressure gauge connector 18 is inserted into the calibration hole, and the water pump pumps pressure liquid into the first measuring channel 8 through the water pipe 20. The point pressure sensor is calibrated through the standard pressure gauge 19. After the calibration is completed, the standard pressure gauge connector is removed, the calibration hole end cover is closed, and each point pressure sensor 3 can be installed at the corresponding measuring point respectively. The water tank 1 is connected in series with the first measuring cavity of each point pressure sensor through the pipeline 4, and the first measuring cavity of each point pressure sensor is filled with liquid.

[0034] The standard pressure sensor 2 is fixed at a position where collapse and deformation will not occur. There is a height difference between the standard pressure sensor and the point pressure sensor. Therefore, there is a reading difference, that is, a pressure difference, between the point pressure sensor and the standard pressure sensor. The height difference between the point pressure sensor and the standard pressure sensor can be calculated through the pressure difference.

[0035] The settlement monitoring system in the utility model can realize the following monitoring modes: 1. When there is no settlement but only water accumulation, the point pressure sensor can be used to determine that there is no settlement, and the water accumulation pressure will act on the second pressure-sensitive component of the water accumulation monitoring sensor. The depth of the water accumulation can be determined by the pressure reading of the water accumulation pressure sensor. 2. When there is no water accumulation but only settlement, the water accumulation pressure sensor reading remains unchanged, so it can be determined that there is no water accumulation, and the point pressure sensor can be used to measure the settlement value of the corresponding measuring point. 3. When both settlement and water accumulation occur underground, the point pressure sensor and the water accumulation pressure sensor reading remain unchanged. The values ​​of the sensors change at the same time. The reading of the accumulated water pressure sensor can determine the depth of the accumulated water. At the same time, the reading of the accumulated water pressure sensor also represents the pressure value of the accumulated water on the second pressure-sensitive component. This value is the same as the pressure value of the accumulated water on the first pressure-sensitive component. Taking this pressure value into consideration, the accurate settlement value of the corresponding measuring point can be determined by the reading of the point pressure sensor. For example, if the reading of the point pressure sensor is P1, the reading of the accumulated water pressure sensor is P2, and the reading of the standard pressure sensor is P3, then the pressure difference between the point pressure sensor and the standard pressure sensor due to the height difference is P1+P2-P3.

[0036] Implementation of underground space monitoring devices Figures 1 to 4 As shown, the specific structure of the underground space monitoring device is the same as the underground space monitoring device described in the above-mentioned settlement monitoring system embodiments, and will not be described in detail here.

[0037] In the above description of this specification, unless otherwise clearly specified and limited, the terms "fixed", "installed", "connected" or "connected" should be understood in a broad sense. For example, with regard to the term "connection", it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. Therefore, unless otherwise clearly defined in this specification, those skilled in the art can understand the specific meanings of the above terms in this utility model according to the specific circumstances.

[0038] According to the above description of this specification, those skilled in the art may also understand that the terms used below, such as "up", "down", "front", "back", "left", "right", "length", "width", "thickness", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", "center", "longitudinal", "lateral", "clockwise" or "counterclockwise", etc., which indicate the orientation or position relationship, are based on the orientation or position relationship shown in the drawings of this specification, and are only for the purpose of facilitating the explanation of the scheme of the utility model and simplifying the description, rather than explicitly or implicitly indicating that the device or element involved must have the specific orientation, be constructed and operate in a specific orientation. Therefore, the above-mentioned orientation or position relationship terms cannot be understood or interpreted as limitations on the scheme of the utility model.

[0039] In addition, the terms "first" or "second" used in this specification to refer to numbers or ordinals are only used for descriptive purposes and cannot be understood as explicitly or implicitly indicating relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this specification, the meaning of "plurality" is at least two, such as two, three or more, etc., unless otherwise clearly and specifically defined.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A settlement monitoring system, comprising an underground space monitoring device, the underground space monitoring device comprising a plurality of point pressure sensors respectively used to be set at corresponding measuring points when in use, the point pressure sensor comprising a first sensor housing, a first measuring cavity for containing liquid being arranged in the first sensor housing, a first pressure sensitive component being arranged on the first measuring cavity, the underground space monitoring device further comprising a standard pressure sensor having a height higher than the point pressure sensor, the measuring cavity of the standard pressure sensor being connected to the first measuring cavity of each point pressure sensor through a pipeline, characterized in that: The first measuring chamber of the point pressure sensor is located on the upper side of the first pressure-sensitive component, and the lower side of the first pressure-sensitive component is provided with a water accumulation action chamber. The first pressure-sensitive component is a diaphragm structure that can elastically deform in the up and down directions. The first sensor housing is provided with a first measuring channel for introducing water accumulation at the measuring point into the water accumulation action chamber. The settlement monitoring system also includes a water accumulation monitoring sensor arranged at each measuring point. The water accumulation monitoring sensor includes a second sensor housing. The second sensor housing has a second measuring chamber connected to the external atmosphere through an air pipe. The lower end of the second measuring chamber has a second pressure-sensitive component arranged at the same height as the first pressure-sensitive component. The lower end of the second pressure-sensitive component is used to contact the accumulated water.

2. The settlement monitoring system according to claim 1, characterized in that: The first sensor housing is provided with a first liquid port and a second liquid port connected to the first measuring cavity, and the pipeline connects the corresponding two liquid ports of two adjacent point pressure sensors in series.

3. The settlement monitoring system according to claim 1, characterized in that: The monitoring point has a mounting interface for mounting a point pressure sensor, and the lower end of the first pressure sensitive component is not higher than the height of the mounting interface.

4. The settlement monitoring system according to any one of claims 1 to 3, characterized in that: The first measuring channel is provided with a filter screen and a channel valve.

5. The settlement monitoring system according to claim 4, characterized in that: A calibration hole for detachable insertion with a standard pressure gauge joint is also arranged on the channel wall of the first measuring channel. A calibration hole end cover is arranged on the calibration hole. The calibration hole is located between the channel valve and the first pressure sensitive component.

6. An underground space monitoring device, comprising a plurality of point pressure sensors respectively arranged at corresponding measuring points when in use, the point pressure sensors comprising a first sensor housing, a first measuring cavity for containing liquid being arranged in the first sensor housing, a first pressure sensitive component being arranged on the first measuring cavity, the underground space monitoring device further comprising a standard pressure sensor having a height higher than the point pressure sensor, the measuring cavity of the standard pressure sensor being connected to the first measuring cavity of each point pressure sensor through a pipeline, characterized in that: The first measuring chamber of the point pressure sensor is located on the upper side of the first pressure sensitive component. The lower side of the first pressure sensitive component has a water accumulation chamber. The first pressure sensitive component is a diaphragm structure that can elastically deform in the up and down directions. The first sensor housing is provided with a first measuring channel for introducing water accumulation at the measuring point into the water accumulation chamber.

7. The underground space monitoring device according to claim 6, characterized in that: The first sensor housing is provided with a first liquid port and a second liquid port connected to the first measuring cavity, and the pipeline connects the corresponding two liquid ports of two adjacent point pressure sensors in series.

8. The underground space monitoring device according to claim 6, characterized in that: The monitoring point has a mounting interface for mounting a point pressure sensor, and the lower end of the first pressure sensitive component is not higher than the height of the mounting interface.

9. The underground space monitoring device according to any one of claims 6 to 8, characterized in that: The first measuring channel is provided with a filter screen and a channel valve.

10. The underground space monitoring device according to claim 9, characterized in that: A calibration hole for detachable insertion with a standard pressure gauge joint is also arranged on the channel wall of the first measuring channel. A calibration hole end cover is arranged on the calibration hole. The calibration hole is located between the channel valve and the first pressure sensitive component.

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