CN112902913A - Goaf settlement monitoring system and method - Google Patents
Goaf settlement monitoring system and method Download PDFInfo
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- CN112902913A CN112902913A CN202110042708.3A CN202110042708A CN112902913A CN 112902913 A CN112902913 A CN 112902913A CN 202110042708 A CN202110042708 A CN 202110042708A CN 112902913 A CN112902913 A CN 112902913A
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Abstract
The application provides a goaf settlement monitoring system and a goaf settlement monitoring method. This collecting space area settlement monitoring system includes: the NPR cable is obliquely embedded in the mining subsidence area, one end of the NPR cable is fixed on the anchor pier head, and the other end of the NPR cable is embedded in the mining subsidence area; wherein, the anchor pier head is positioned on the ground outside the goaf, the included angle between the NPR cable and the ground is an acute angle, and the mining subsidence area is positioned above the goaf; the settlement sensor is fixedly arranged at a monitoring point preset in the mining subsidence area and used for measuring the coordinate of the monitoring point in real time; the axial force sensor is fixedly arranged on the NPR cable and can monitor the axial force of the NPR cable in real time; and the processing unit is used for monitoring the sedimentation of the goaf in real time according to the coordinate data of the monitoring point sent by the sedimentation sensor and the axial force data of the NPR cable sent by the axial force sensor, so that the quantitative judgment on the sedimentation of the goaf is realized, and the processing unit is favorable for guiding engineering technicians to reasonably determine the coping strategy of the sedimentation of the goaf.
Description
Technical Field
The application relates to the technical field of resource exploitation, in particular to a goaf settlement monitoring system and a goaf settlement monitoring method.
Background
The goaf is a 'hole' generated below a landmark due to artificial excavation or natural address movement, the safety production of a mine faces a great safety problem due to the goaf, and personnel and mechanical equipment can fall into the goaf and be damaged.
Since the 20 th century, a large number of goafs are left in some mines and the peripheries of the mines in mining industry in China, at present, underground goafs become an important problem which restricts development of mines and urbanization development of the upper parts of the goafs, collapse accidents easily occur along with mining of the mines to deep parts, and due to the influence of the goafs, a plurality of buildings cannot be built, so that inconvenience is brought to production and living of people. Therefore, how to quantitatively judge the distribution characteristics of the underground goaf is always a difficult problem which besets engineering technicians to reasonably determine goaf countermeasures.
Therefore, there is a need to provide an improved solution to the above-mentioned deficiencies of the prior art.
Disclosure of Invention
The present application is directed to a goaf settlement monitoring system and method, so as to solve or alleviate the above problems in the prior art.
In order to achieve the above purpose, the present application provides the following technical solutions:
the application provides a collecting space area settlement monitoring system includes: the NPR cable is obliquely embedded in the mining subsidence area, one end of the NPR cable is fixed on the anchor pier head, and the other end of the NPR cable is embedded in the mining subsidence area; the anchor pier head is positioned on the ground outside the goaf, the included angle between the NPR cable and the ground is an acute angle, and the mining subsidence area is positioned above the goaf; the settlement sensor is fixedly arranged at a monitoring point preset in the mining subsidence area and used for measuring the coordinate of the monitoring point in real time; the axial force sensor is fixedly arranged on the NPR cable and can monitor the axial force of the NPR cable in real time; and the processing unit is used for monitoring the sedimentation of the goaf in real time according to the coordinate data of the monitoring point sent by the sedimentation sensor and the axial force data of the NPR cable sent by the axial force sensor.
Optionally, in any embodiment of the present application, a plurality of layered settlement targets are laid on the NPR cable, and the layered settlement targets are linearly arranged along the length direction of the NPR cable, wherein the layered settlement targets can transmit the coordinate data at the burying points thereof to the processing unit in real time.
Optionally, in any embodiment of the present application, a coordinate monitoring unit is disposed in each of the layered settlement mark and the settlement sensor, and the coordinate monitoring unit in the layered settlement mark can send coordinate data of a place where the layered settlement mark is buried to the processing unit in real time; and a coordinate monitoring unit in the settlement sensor can send coordinate data at the monitoring point to the processing unit in real time.
Optionally, in any embodiment of the present application, the goaf settlement monitoring system further includes: and the coordinate analysis unit is used for receiving and analyzing the coordinate data sent by the coordinate monitoring unit in the layered settlement mark to determine the displacement change at the buried point of the layered settlement mark, and receiving and analyzing the coordinate data sent by the coordinate monitoring unit in the settlement sensor to determine the displacement change at the monitoring point.
Optionally, in any embodiment of the present application, the processing unit establishes a relationship between force and displacement of the mining subsidence area according to the displacement change at the layered settlement mark burying point and the displacement change at the monitoring point determined by the coordinate analysis unit, and the axial force data of the NPR cable sent by the axial force sensor.
Optionally, in any embodiment of the present application, the coordinate monitoring unit is a BDS positioning module, and the coordinate analyzing unit is a BDS receiving module.
Optionally, in any embodiment of the present application, the axial force sensor is located at an end of the NPR cable proximate to the anchorages head.
Optionally, in any embodiment of the present application, the goaf settlement monitoring system further includes: and the alarm unit is electrically connected with the processing unit, responds to the change of the coordinate data of the monitoring point sent by the settlement sensor and/or the axial force data of the NPR cable sent by the axial force sensor, and receives an alarm instruction sent by the processing unit to alarm.
Optionally, in any embodiment of the present application, the goaf settlement monitoring system further includes: and the display unit is electrically connected with the processing unit and is used for displaying the coordinate data of the monitoring point, which is sent by the settlement sensor, and the axial force data of the NPR cable, which is sent by the axial force sensor, received by the processing unit in real time.
The embodiment of the application further provides a goaf settlement monitoring method, which includes: s101, fixedly mounting an axial force sensor on an NPR cable, and embedding the NPR cable in a mining subsidence area, wherein one end of the NPR cable is fixed on an anchor pier head, the other end of the NPR cable is embedded in the mining subsidence area, the anchor pier head is positioned on the ground outside the goaf, an included angle between the NPR cable and the ground is an acute angle, and the mining subsidence area is positioned above the goaf; the axial force sensor can monitor the axial force change of the NPR cable in real time; s102, fixedly mounting a settlement sensor at a monitoring point preset in the mining settlement area, wherein the settlement sensor is used for measuring the coordinate of the monitoring point in real time; and S103, monitoring the sedimentation of the goaf in real time according to the coordinate data of the monitoring point sent by the sedimentation sensor and the axial force data of the NPR cable sent by the axial force sensor.
Compared with the closest prior art, the technical scheme of the embodiment of the application has the following beneficial effects:
according to the technical scheme, a settlement sensor is fixedly installed at a preset monitoring point of a mining subsidence area, and coordinates at the monitoring point are measured in real time; the NPR cable is obliquely embedded in a mining subsidence area, one end of the NPR cable is fixed on an anchor pier head on the outer ground of the goaf, the other end of the NPR cable is embedded in the mining subsidence area, and an axial force sensor is arranged on the NPR cable so as to monitor the axial force change on the NPR cable in real time; and the settlement of the goaf is quantitatively judged by utilizing the coordinate data monitored by the settlement sensor and the axial force data monitored by the axial force sensor, so that guidance of engineering technicians for reasonably determining a coping strategy of the goaf settlement is facilitated.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application. Wherein:
fig. 1 is a schematic view of a scenario of a goaf subsidence monitoring system provided in accordance with some embodiments of the present application;
figure 2 is a schematic structural diagram of a goaf settlement monitoring system provided in accordance with some embodiments of the present application;
fig. 3 is a schematic flow diagram of a goaf subsidence monitoring method provided in accordance with some embodiments of the present application.
Description of reference numerals:
101-NPR cable; 102-a sedimentation sensor; 103-a processing unit; 111-axial force sensor.
Detailed Description
The present application will be described in detail below with reference to the embodiments with reference to the attached drawings. The various examples are provided by way of explanation of the application and are not limiting of the application. In fact, it will be apparent to those skilled in the art that modifications and variations can be made in the present application without departing from the scope or spirit of the application. For instance, features illustrated or described as part of one embodiment, can be used with another embodiment to yield a still further embodiment. It is therefore intended that the present application cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.
In the description of the present application, the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present application but do not require that the present application must be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. The terms "connected," "connected," and "disposed" as used herein are intended to be broadly construed, and may include, for example, fixed and removable connections; can be directly connected or indirectly connected through intermediate components; the connection may be a wired electrical connection, a wireless electrical connection, or a wireless communication signal connection, and a person skilled in the art can understand the specific meaning of the above terms according to specific situations.
Fig. 1 is a schematic view of a scenario of a goaf subsidence monitoring system provided in accordance with some embodiments of the present application; as shown in fig. 1, an anchor pier head is arranged on the ground outside a goaf, an NPR cable 101 provided with an axial force sensor 111 is obliquely embedded in a mining subsidence area, one end of the NPR cable is fixed on the anchor pier head, the other end of the NPR cable is embedded in the mining subsidence area, when the goaf is subsided, the mining subsidence area is subsided along with the NPR cable 101, and the axial force sensor 111 monitors the axial force change of the NPR cable 101 in real time; the settlement sensor 102 is installed at a monitoring point preset in the mining settlement area, the coordinates at the monitoring point are measured in real time by the settlement sensor 102, and whether the mining settlement area is settled or not can be determined by whether the coordinates at the monitoring point are changed or not; the axial force sensor 111 and the settlement sensor 102 respectively send the monitored axial force data and coordinate data to the processing unit 103, and the processing unit 103 processes the settlement of the goaf/mining subsidence area according to the axial force data and the coordinate data, so that quantitative evaluation of the goaf/mining subsidence area is realized, and engineering technicians are guided to reasonably determine a coping strategy of the goaf settlement. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
Figure 2 is a schematic structural diagram of a goaf settlement monitoring system provided in accordance with some embodiments of the present application; as shown in fig. 2, the goaf settlement monitoring system includes: the NPR cable 101 is obliquely embedded in the mining subsidence area, one end of the NPR cable is fixed on the anchor pier head, and the other end of the NPR cable is embedded in the mining subsidence area; the anchor pier head is positioned on the ground outside the goaf, the included angle between the NPR cable 101 and the ground is an acute angle, and the mining subsidence area is positioned above the goaf; the settlement sensor 102 is fixedly installed at a monitoring point preset in the mining subsidence area and used for measuring the coordinate of the monitoring point in real time; an axial force sensor 111 fixedly mounted on the NPR cable 101 and capable of monitoring the axial force of the NPR cable 101 in real time; and the processing unit 103 is configured to monitor the goaf settlement in real time according to the coordinate data of the monitoring point sent by the settlement sensor 102 and the axial force data of the NPR cable 101 sent by the axial force sensor 111. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
In the embodiment of the application, an anchor pier head is arranged on the ground outside the goaf and is used as a punctuation for measuring the settlement reference of the mining subsidence area, and whether the mining subsidence area is settled or not can be determined through the coordinate change monitored by the settlement sensor 102; one end of the NPR cable 101 is fixed on the anchor pier head, the other end of the NPR cable 101 is buried in the mining subsidence area, the axial force sensor 111 arranged on the NPR cable 101 monitors the stress of the NPR cable 101 in real time, and whether the goaf/mining subsidence area subsides can be determined through the axial force change of the NPR cable 101 monitored by the axial force sensor 111. Whether the goaf/mining subsidence area subsides or not is checked from a displacement angle and a stress angle by using the settlement sensor 102 and the axial force sensor 111, so that the monitoring precision of the goaf/mining subsidence area is effectively improved. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
In the embodiment of the application, the coordinate data of the monitoring point and the axial force data of the NPR cable 101 are processed by the processing unit 103 to form the relationship between the displacement and the force when the goaf/mining subsidence area subsides, so that the subsidence of the goaf/mining subsidence area is quantitatively judged, and engineering technicians are effectively guided to reasonably determine the coping strategy of the goaf subsidence. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
In the embodiment of the present application, when the settlement sensor 102 and the axial force sensor 111 respectively send the coordinate data and the axial force data to the processing unit 103, the coordinate data and the axial force data may be respectively sent to the processing unit 103 through a wireless communication manner. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
In some optional embodiments, a plurality of layered settlement targets are arranged on the NPR cable 101, and are linearly arranged along the length direction of the NPR cable 101, wherein the layered settlement targets can transmit the coordinate data at the burying points thereof to the processing unit 103 in real time. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
In the embodiment of the application, the coordinates of different depths of the mining subsidence area are monitored in real time by arranging a plurality of layered subsidence marks on the NPR cable 101 in a linear manner, so that the subsidence monitoring of the mining subsidence area at different depths is realized. Furthermore, the processing unit 103 can more accurately establish the relationship between displacement and force when the goaf/mining subsidence area subsides according to the coordinate data of the layered settlement targets arranged on the NPR cable 101 and the axial force data on the NPR cable 101, so that the settlement monitoring or early warning of the goaf/mining subsidence area is more accurate. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
In a specific example, coordinate monitoring units are arranged in the layered settlement mark and the settlement sensor 102, and the coordinate monitoring units in the layered settlement mark can send coordinate data of a position where the layered settlement mark is buried to the processing unit 103 in real time; the coordinate monitoring unit in the sedimentation sensor 102 can send the coordinate data at the monitoring point to the processing unit 103 in real time. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
In this embodiment of the application, the coordinate monitoring unit may adopt a positioning module deployed with a BeiDou Navigation Satellite System (BDS for short) to realize coordinate monitoring of the mining subsidence area and send coordinate data to the processing unit 103. Of course, a Positioning module with a Global Positioning System (GPS) deployed, or a Positioning module with a GLONASS satellite NAVIGATION System (GLONASS SATELLITE SYSTEM) deployed, or a Positioning module with a Galileo satellite Positioning System (Galileo) deployed may also be adopted. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
In some optional embodiments, the goaf subsidence monitoring system further comprises: and the coordinate analysis unit is used for receiving and analyzing the coordinate data sent by the coordinate monitoring unit in the analysis settlement mark to determine the displacement change at the embedding point of the layered settlement mark, and receiving and analyzing the coordinate data sent by the coordinate monitoring unit in the settlement sensor 102 to determine the displacement change at the monitoring point. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
In the embodiment of the application, the coordinate analysis unit is arranged to process the coordinate data sent by the coordinate monitoring unit (such as online processing, offline processing or noise removal, format conversion and the like) to obtain the displacement change of the corresponding position (layered subsidence mark burying position and monitoring point) of the mining subsidence area, so that whether the goaf/mining subsidence area subsides or not is judged through displacement. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
In this embodiment of the application, the coordinate analysis unit may be an analysis processing module corresponding to a positioning System deployed by the coordinate monitoring unit, for example, a positioning module deployed by the coordinate monitoring unit in a BeiDou Navigation Satellite System (BDS for short), and then the coordinate analysis unit is a BDS receiving module capable of receiving and analyzing data sent by the BDS positioning module. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
In a specific example, the processing unit 103 establishes the relationship between the force and the displacement of the mining subsidence area according to the displacement change at the burial point of the subsidence mark and the displacement change at the monitoring point determined by the coordinate analysis unit and the axial force data of the NPR cable 101 sent by the axial force sensor 111. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
In the embodiment of the present application, the coordinate analysis unit sends the displacement data obtained by analysis to the processing unit 103, so that analysis processing from coordinate data to displacement data in the processing unit 103 is avoided, and the calculation amount of the processing unit 103 is reduced. The axial force sensor 111 sends the monitored axial force data to the processing unit 103, the processing unit 103 establishes a relation between force and displacement of the mining subsidence area according to the displacement data and the axial force data, and quantitatively judges the subsidence of the goaf/mining subsidence area, thereby effectively guiding engineering technicians to reasonably determine a coping strategy of the subsidence of the goaf/mining subsidence area. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
In the embodiment of the application, when the relationship between the force and the displacement of the mining subsidence area is established, the relationship between the force and the displacement is established mainly through the displacement at the layered subsidence mark and the axial force of the NPR cable 101, and the relationship between the established force and the displacement is verified by utilizing the displacement data at the monitoring point, so that the accuracy of the relationship between the established force and the displacement is tested, and the accuracy of quantitative judgment on the goaf/mining subsidence area is improved. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
In some alternative embodiments, the axial force sensor 111 is located at an end of the NPR cable 101 near the anchor head. Therefore, the axial force data of the NPR cable 101 can be effectively monitored, and meanwhile, the installation and maintenance of the axial force sensor 111 on the NPR cable 101 are facilitated. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
In some optional embodiments, the goaf subsidence monitoring system further comprises: and the alarm unit is electrically connected with the processing unit 103, and in response to the change of the coordinate data of the monitoring point sent by the settlement sensor 102 and/or the change of the axial force data of the NPR cable 101 sent by the axial force sensor 111, the alarm unit receives an alarm instruction sent by the processing unit 103 to alarm. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
In the embodiment of the application, the bottom surface of the anchor pier head is used as a punctuation for measuring the settlement reference of the mining subsidence area, and the processing unit 103 judges whether the goaf/mining subsidence area sinks or not according to whether the coordinate of the monitoring point changes or not; meanwhile, whether or not the gob/mining subsidence area is subsided is judged according to whether or not the axial force of the NPR cable 101 is changed. Therefore, when the processing unit 103 analyzes that the coordinate at the monitoring point changes and/or the axial force of the NPR cable 101 changes, an alarm instruction is sent to the alarm unit to warn the goaf/mining subsidence area settlement and guide the engineering technician to adopt a coping strategy for the goaf/mining subsidence area settlement in time. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
In some optional embodiments, the goaf subsidence monitoring system further comprises: and a display unit electrically connected to the processing unit 103, and configured to display, in real time, the coordinate data at the monitoring point sent by the settlement sensor 102 and the axial force data of the NPR cable 101 sent by the axial force sensor 111, which are received by the processing unit 103. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
In the embodiment of the application, the coordinate data of the monitoring point and the axial force data of the NPR cable 101 are displayed in real time and visually through the display unit, so that engineering technicians can mutually verify the judgment of the processing unit 103 (whether the goaf/mining subsidence area subsides or not) according to engineering technical experience. Meanwhile, the settlement (amount) of the mining area/mining subsidence area is calculated and quantified according to the coordinate variation or the axial force variation. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
In this embodiment, the display unit may further display a relationship curve between the force and the displacement of the goaf/mining subsidence area, which is obtained by analyzing by the processing unit 103, in real time, and determine the speed of the goaf/mining subsidence area settling through the curvature change of the curve. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
Figure 3 is a schematic flow diagram of a goaf settlement monitoring method provided in accordance with some embodiments of the present application; as shown in fig. 3, the goaf settlement monitoring method includes:
s301, fixedly mounting an axial force sensor on an NPR cable, and embedding the NPR cable in a mining subsidence area, wherein one end of the NPR cable is fixed on an anchor pier head, the other end of the NPR cable is embedded in the mining subsidence area, the anchor pier head is positioned on the ground outside the goaf, an included angle between the NPR cable and the ground is an acute angle, and the mining subsidence area is positioned above the goaf; the axial force sensor can monitor the axial force change of the NPR cable in real time;
step S302, fixedly installing a settlement sensor at a monitoring point preset in the mining settlement area, wherein the settlement sensor is used for measuring the coordinate of the monitoring point in real time;
and S303, monitoring the sedimentation of the goaf in real time according to the coordinate data of the monitoring point sent by the sedimentation sensor and the axial force data of the NPR cable sent by the axial force sensor.
The goaf settlement monitoring method provided by the embodiment of the application can achieve the beneficial effects of the goaf settlement monitoring system of any one of the embodiments, and is not repeated here.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A goaf settlement monitoring system, comprising:
the NPR cable is obliquely embedded in the mining subsidence area, one end of the NPR cable is fixed on the anchor pier head, and the other end of the NPR cable is embedded in the mining subsidence area; the anchor pier head is positioned on the ground outside the goaf, the included angle between the NPR cable and the ground is an acute angle, and the mining subsidence area is positioned above the goaf;
the settlement sensor is fixedly arranged at a monitoring point preset in the mining subsidence area and used for measuring the coordinate of the monitoring point in real time;
the axial force sensor is fixedly arranged on the NPR cable and can monitor the axial force of the NPR cable in real time;
and the processing unit is used for monitoring the sedimentation of the goaf in real time according to the coordinate data of the monitoring point sent by the sedimentation sensor and the axial force data of the NPR cable sent by the axial force sensor.
2. The goaf settlement monitoring system of claim 1, wherein a plurality of layered settlement markers are deployed on the NPR cable, the plurality of layered settlement markers being linearly arranged along a length of the NPR cable, wherein the layered settlement markers are capable of transmitting coordinate data at their burial points to the processing unit in real time.
3. The goaf sedimentation monitoring system according to claim 2, wherein coordinate monitoring units are provided in the layered sedimentation marker and the sedimentation sensor, and the coordinate monitoring units in the layered sedimentation marker can send coordinate data of a place where the layered sedimentation marker is buried to the processing unit in real time; and a coordinate monitoring unit in the settlement sensor can send coordinate data at the monitoring point to the processing unit in real time.
4. The goaf settlement monitoring system of claim 3 further comprising: and the coordinate analysis unit is used for receiving and analyzing the coordinate data sent by the coordinate monitoring unit in the layered settlement mark to determine the displacement change at the buried point of the layered settlement mark, and receiving and analyzing the coordinate data sent by the coordinate monitoring unit in the settlement sensor to determine the displacement change at the monitoring point.
5. The goaf settlement monitoring system of claim 4, wherein the processing unit establishes a force-to-displacement relationship for the mining subsidence zone based on the determined displacement change at the layered subsidence marker burying point and the displacement change at the monitoring point, and the axial force data of the NPR cable sent by the axial force sensor.
6. The goaf settlement monitoring system of claim 4, wherein the coordinate monitoring unit is a BDS positioning module and the coordinate analysis unit is a BDS receiving module.
7. The goaf settlement monitoring system of any one of claims 1-6, wherein the axial force sensor is located on the NPR cable at an end proximate the anchor pier head.
8. A goaf settlement monitoring system in accordance with any one of claims 1-6 further comprising: and the alarm unit is electrically connected with the processing unit, responds to the change of the coordinate data of the monitoring point sent by the settlement sensor and/or the axial force data of the NPR cable sent by the axial force sensor, and receives an alarm instruction sent by the processing unit to alarm.
9. A goaf settlement monitoring system in accordance with any one of claims 1-6 further comprising: and the display unit is electrically connected with the processing unit and is used for displaying the coordinate data of the monitoring point, which is sent by the settlement sensor, and the axial force data of the NPR cable, which is sent by the axial force sensor, received by the processing unit in real time.
10. A goaf settlement monitoring method is characterized by comprising the following steps:
s101, fixedly mounting an axial force sensor on an NPR cable, and embedding the NPR cable in a mining subsidence area, wherein one end of the NPR cable is fixed on an anchor pier head, the other end of the NPR cable is embedded in the mining subsidence area, the anchor pier head is positioned on the ground outside the goaf, an included angle between the NPR cable and the ground is an acute angle, and the mining subsidence area is positioned above the goaf; the axial force sensor can monitor the axial force change of the NPR cable in real time;
s102, fixedly mounting a settlement sensor at a monitoring point preset in the mining settlement area, wherein the settlement sensor is used for measuring the coordinate of the monitoring point in real time;
and S103, monitoring the sedimentation of the goaf in real time according to the coordinate data of the monitoring point sent by the sedimentation sensor and the axial force data of the NPR cable sent by the axial force sensor.
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