Non-coal mine ground pressure monitoring device

Abstract

The utility model relates to the technical field of mine safety monitoring, and discloses a non-coal mine ground pressure monitoring device which comprises a roadway inner drill hole formed in a mine body, a ground pressure monitoring device body arranged in the roadway inner drill hole and a data collection module in communication connection with the ground pressure monitoring device body. The ground pressure monitoring device body comprises a stress displacement meter fixed in a drill hole in a roadway, the stress displacement meter comprises a sensor arranged at the end close to surrounding rock, and the tail end of the stress displacement meter makes contact with the surface of the surrounding rock. The hole is formed in the ore body close to the surrounding rock, the ground pressure monitoring device body is fixed in the hole, one end of the sensor makes contact with the surrounding rock, workers do not need to work at a monitoring point, and the stress displacement change of the surrounding rock can be automatically monitored in any underground area.

Description

Technical Field

[0001] The utility model relates to the technical field of mine safety monitoring, in particular to a ground pressure monitoring device for non-coal mines. Background Art

[0002] Non-coal mines refer to mines and tailings ponds that mine metal ores, radioactive ores, and petrochemical raw materials, building materials, auxiliary raw materials, refractory materials and other non-metallic minerals (except coal). Coal mines and non-coal mines need to monitor ground pressure during mining. Coal mine monitoring uses the KJ996 mining ground pressure monitoring system, which includes multiple components such as computers, printers, UPS power supplies, mining intrinsically safe monitoring master stations and wireless transmission substations; while non-coal mine monitoring uses a variety of means such as comprehensive sensor technology, electronic technology, information technology and communication technology to achieve automatic ground pressure monitoring and early warning.

[0003] The current non-coal mine ground pressure monitoring devices are basically taken to different places manually for monitoring when needed. However, there are inconvenient operations in areas with higher altitudes, which will affect the measurement accuracy of the device and have high working environment and work requirements for the measurement workers. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a ground pressure monitoring device for non-coal mines. A hole is opened on the ore body close to the surrounding rock, and the main body of the ground pressure monitoring device is fixed in the hole so that one end of the sensor is in contact with the surrounding rock. There is no need for manual work at the monitoring point, and the stress and displacement changes of the surrounding rock can be automatically monitored in any area underground.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a ground pressure monitoring device for non-coal mines, including a tunnel borehole opened in the ore body, a ground pressure monitoring device body arranged inside the tunnel borehole, and a data collection module communicatively connected to the ground pressure monitoring device body; the ground pressure monitoring device body includes a stress displacement meter fixed inside the tunnel borehole, the stress displacement meter includes a sensor arranged at one end thereof close to the surrounding rock, and the end of the stress displacement meter is in contact with the surface of the surrounding rock.

[0006] Furthermore, the boreholes in the tunnel are located at the edge of the ore body close to the surrounding rock.

[0007] Furthermore, a metal box is disposed outside the stress displacement meter to wrap it, and the outer side of the metal box is fixed to the inner wall of the borehole in the tunnel through an anchoring agent.

[0008] Furthermore, the stress displacement meter adopts a linear displacement sensor.

[0009] Furthermore, the data collection module includes a transmission module and a receiving terminal.

[0010] Furthermore, the transmission module includes a transmission network cable, the ground pressure monitoring device body is electrically connected to the conversion box through the transmission network cable, and the conversion box is electrically connected to the base station through the transmission network cable; the receiving terminal includes a host server connected to the base station through the transmission network cable.

[0011] The beneficial effects of the utility model are:

[0012] 1. By drilling a hole in the ore body close to the surrounding rock, fixing the main body of the ground pressure monitoring device in the hole, making one end of the stress displacement meter contact the surrounding rock, and connecting the monitoring device to the external terminal through a transmission network cable, there is no need for manual work at the monitoring point, and the surrounding rock stress displacement changes can be automatically monitored in any area underground;

[0013] 2. The ground pressure is monitored by compressing or extending the ends of the arranged stress displacement meters. The change value of stress or displacement can be obtained more directly through the host server in the ground dispatching room. If it exceeds a certain range, the alarm device will be activated, so that the mine can respond more quickly and make emergency plans in time;

[0014] 3. Fixing the ground pressure monitoring device in one place can monitor ground pressure changes in real time, which can further improve the accuracy of data detection. In addition, the device is easy to install and can save manpower and material resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the main structure of the underground ground pressure monitoring device of the utility model;

[0017] Figure 3 It is an enlarged schematic diagram of the mechanism of the measuring part of the utility model.

[0018] In the figure: 1. Sensor; 2. Stress displacement meter; 3. Transmission network cable; 4. Anchoring agent; 5. Drilling hole in the tunnel; 6. Conversion box; 7. Base station; 8. Host server; 9. Ground pressure monitoring device body. DETAILED DESCRIPTION

[0019] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments.

[0020] Example:

[0021] like Figure 1-Figure 3As shown, a ground pressure monitoring device for non-coal mines includes a tunnel borehole 5 opened in the ore body, a ground pressure monitoring device body 9 arranged inside the tunnel borehole 5, and a data collection module connected to the ground pressure monitoring device body 9 for communication; the ground pressure monitoring device body 9 includes a stress displacement meter 2 fixed inside the tunnel borehole 5, the stress displacement meter 2 includes a sensor 1 arranged at one end thereof close to the surrounding rock, and the end of the stress displacement meter 2 is in contact with the surface of the surrounding rock; the sensor 1 converts the mechanical signal of measuring the deformation of the surrounding rock into an electrical signal and transmits it to the data collection module.

[0022] By drilling a hole in the ore body close to the surrounding rock, fixing the main body of the ground pressure monitoring device in the hole, making one end of the stress displacement meter contact the surrounding rock, and connecting the monitoring device to the external terminal through a transmission network cable, there is no need for manual work at the monitoring point, and the stress and displacement changes of the surrounding rock can be automatically monitored in any area underground.

[0023] The borehole 5 in the tunnel is located at the edge of the ore body close to the surrounding rock, that is, the borehole 5 in the tunnel passes through the ore body.

[0024] The main body 9 of the ground pressure monitoring device also includes a metal box arranged outside the stress displacement meter 2 to wrap it, and the outer side of the metal box is fixed to the inner wall of the borehole 5 in the tunnel through an anchoring agent 4.

[0025] The stress displacement meter 2 adopts a linear displacement sensor, and the sensor 1 is located at the head of the stress displacement meter 2. The stress displacement meter 2 also includes a stress rod, and the end of the stress rod is in contact with the surface of the surrounding rock; the sensor 1 is connected to the stress rod and is responsible for sensing the degree of expansion and contraction of the stress rod; the sensor 1 is used to sense whether the surrounding rock of the tunnel is displaced and deformed; and the information is transmitted to the base station 7 through the transmission network cable 3.

[0026] The data collection module includes a transmission module and a receiving terminal.

[0027] The transmission module includes a transmission network cable 3, and the ground pressure monitoring device body 9 is electrically connected to the conversion box 6 through the transmission network cable 3, and the conversion box 6 is electrically connected to the base station 7 through the transmission network cable 3; the transmission network cable 3 transmits stress and displacement data to the base station 7; the conversion box 6 is equipped with a power supply and a chip, which is fixed in the conversion box 6 by screws; the receiving terminal includes a host server 8 located in the ground dispatching room, which is connected to the base station 7 through the transmission network cable 3; the data enters the base station 7 after being processed by the conversion box 6, and then enters the switch, and finally enters the mine dispatching room, and the host server 8 collects the data for preliminary processing and storage.

[0028] Working process: insert the stress displacement meter 2 into the drill hole 5 in the tunnel reserved in advance in the mine, let the stress displacement meter touch the bottom and let the stress rod contact the surrounding rock to sense the stress displacement change of the surrounding rock, put the anchor 4 into the hole, so that it adheres to the wall of the drill hole 5 in the tunnel and the metal box outside the stress displacement meter 2 to ensure its stability in the hole. When the surrounding rock of the ore body is displaced and deformed, the degree of deformation is transmitted to the transmission network cable 3 through the sensor 1, and transmitted to the chip in the conversion box 6 through the transmission network cable 3. The chip in the conversion box 6 gathers the data to the base station 7 through the network cable. The base station 7 aggregates the data in all the conversion boxes 6 in the mine, and transmits it to the host server 8 in the ground dispatching room through the transmission network cable 3, and records the value of the stress displacement change in digital form. The data is sorted by a dedicated person. Once it is found that the displacement stress change value exceeds a certain range, an early warning can be made in time, and corresponding measures can be taken, which provides great convenience for the management and maintenance of underground tunnels in non-coal mines.

[0029] The above description is only used to illustrate the technical solution of the utility model rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the utility model by ordinary technicians in this field should be included in the scope of the claims of the utility model as long as they do not depart from the spirit and scope of the technical solution of the utility model.

Claims

1. A ground pressure monitoring device for non-coal mines, characterized by: The invention comprises a tunnel borehole (5) opened in a mine body, a ground pressure monitoring device body (9) arranged inside the tunnel borehole (5), and a data collection module connected to the ground pressure monitoring device body (9) in communication; the ground pressure monitoring device body (9) comprises a stress displacement meter (2) fixed inside the tunnel borehole (5), the stress displacement meter (2) comprises a sensor (1) arranged at one end thereof close to the surrounding rock, and the end of the stress displacement meter (2) is in contact with the surface of the surrounding rock.

2. The ground pressure monitoring device for non-coal mines according to claim 1 is characterized in that: The borehole (5) in the tunnel is located at the edge of the ore body close to the surrounding rock.

3. The ground pressure monitoring device for non-coal mines according to claim 1 is characterized in that: A metal box is disposed outside the stress displacement meter (2) to wrap the stress displacement meter. The outer side of the metal box is fixed to the inner wall of the borehole (5) in the tunnel via an anchoring agent (4).

4. The ground pressure monitoring device for non-coal mines according to claim 1 is characterized in that: The stress displacement meter (2) adopts a linear displacement sensor.

5. The ground pressure monitoring device for non-coal mines according to claim 1 is characterized in that: The data collection module includes a transmission module and a receiving terminal.

6. The ground pressure monitoring device for non-coal mines according to claim 5, characterized in that: The transmission module comprises a transmission network cable (3); the ground pressure monitoring device body (9) is electrically connected to a conversion box (6) via the transmission network cable (3); and the conversion box (6) is electrically connected to a base station (7) via the transmission network cable (3); and the receiving terminal comprises a host server (8) connected to the base station (7) via the transmission network cable (3).

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