Sensor mounting device for mine micro-seismic monitoring

Abstract

The utility model belongs to the technical field of micro-seismic monitoring, and particularly discloses a sensor mounting device for mine micro-seismic monitoring, which comprises a shell, the shell is fixedly mounted on the inner wall of a mine drill hole, a cover plate is arranged at one end of the shell close to the hole opening of the drill hole, and two sliding rails are fixedly mounted on the inner wall of the shell in parallel. A sliding plate is slidably arranged on the sliding rail, a threaded rod is fixedly installed in the middle of the side, close to an orifice, of the sliding plate, a micro-seismic monitoring sensor is installed on the sliding plate through the threaded rod, an open hole is formed in the middle of the cover plate, a mounting rod is arranged in the open hole of the cover plate, and one end of the mounting rod penetrates through the cover plate through the open hole; the other end of the mounting rod is fixedly mounted on the micro-seismic monitoring sensor; the device is simple in structure and low in cost, does not need to use anchoring agents, and is suitable for installation of the micro-seismic monitoring system needing to recycle the sensor.

Description

Technical Field

[0001] The utility model belongs to the technical field of microseismic monitoring, and in particular relates to a sensor installation device for microseismic monitoring in mines. Background Art

[0002] With the continuous advancement of underground mining in my country, the disturbance of rock mass caused by mining activities will cause damage to the rock mass, affecting the safety of mining production. Microseismic monitoring has become an important way to predict rock disasters. The basic principle of microseismic monitoring technology is to monitor the impact, effect and underground status of production activities by observing and analyzing tiny earthquake events generated in production activities.

[0003] At present, the general procedure for installing microseismic monitoring sensors in underground mines is to drill sensor installation holes at designated locations in advance, then send the sensor to the bottom of the hole through the installation tool, and couple the sensor to the rock at the bottom of the hole with anchor resin or seal it with grouting. In order to receive the elastic waves generated by microfractures in the rock mass, the tight coupling of the sensor and the rock is correct for the monitoring results and can minimize the interference of external signals. However, the disadvantage of this installation method is that after the anchor resin is fixed and deformed, it is difficult to recover the sensor, which increases the cost of microseismic monitoring. In addition, this method is difficult to operate, has low work efficiency, and is not convenient for recovering microseismic monitoring sensors. Utility Model Content

[0004] The purpose of the utility model is to solve the deficiencies of the prior art and to propose a sensor installation device for microseismic monitoring in mines, which can reduce the difficulty of installing microseismic monitoring sensors, improve installation efficiency, and reduce the cost of microseismic monitoring.

[0005] In order to meet the above purpose, the technical solution adopted by the utility model is:

[0006] A sensor installation device for microseismic monitoring in mines, comprising a shell, wherein the shell is fixedly installed on the inner wall of a mine borehole, a cover plate is provided at one end of the shell near the borehole opening, two slide rails are fixedly installed in parallel on the inner wall of the shell, a slide plate is slidably provided on the slide rails, a threaded rod is fixedly installed in the middle of one side of the slide plate near the hole opening, a microseismic monitoring sensor is installed on the slide plate via the threaded rod, an opening is provided in the middle of the cover plate, a mounting rod is provided in the opening of the cover plate, one end of the mounting rod passes through the cover plate through the opening, and the other end of the mounting rod is fixedly installed on the microseismic monitoring sensor.

[0007] Preferably, the shell is made of a circular steel pipe with a wall thickness of 3 to 5 mm, and its outer diameter matches the aperture of the mine monitoring hole.

[0008] Preferably, the slide rail consists of two steel rails with a direction of 180°.

[0009] Preferably, the mounting rod is provided with a multi-section connecting mechanism and an opening is provided in the middle.

[0010] Preferably, the microseismic monitoring sensor is provided with a signal cable, and the signal cable passes through the hole of the mounting rod and is connected to the microseismic monitoring sensor.

[0011] Preferably, a compression spring is provided on the mounting rod, one end of the compression spring is fixedly connected to the mounting rod, and the other end of the compression spring is pressed on the cover plate.

[0012] Preferably, the cover plate is provided with four openings around it, and the cover plate is fixed to the inner wall of the mine borehole by drilling screws in the openings.

[0013] The beneficial effects of the utility model are:

[0014] The device of the utility model has a simple structure, low cost, and does not require the use of anchoring agents, and is suitable for the installation of microseismic monitoring systems that require the recovery of sensors. The position of the sensor can be adjusted according to the monitoring needs, making the installation and removal of the microseismic monitoring sensor convenient and quick, reducing the installation workload, improving the installation success rate of the microseismic monitoring sensor and the sensor recovery rate, reducing the loss rate of the microseismic monitoring sensor, and thus reducing the cost of microseismic monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] Among them: 1-housing; 2-slide rail; 3-microseismic monitoring sensor; 4-slide plate; 5-threaded rod; 6-cover plate; 7-compression spring; 8-mounting rod; 9-signal cable. DETAILED DESCRIPTION

[0017] The technical solution of the utility model is described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0018] like Figure 1 As shown, a sensor installation device for microseismic monitoring in mines comprises a shell, wherein the shell 1 is fixedly mounted on the inner wall of a mine borehole, a cover plate 6 is provided at one end of the shell 1 close to the borehole opening, two slide rails 2 are fixedly and parallelly mounted on the inner wall of the shell 1, a slide plate 4 is slidably arranged on the slide rail 2, a threaded rod 5 is fixedly mounted in the middle of the slide plate 4 close to the hole opening, a microseismic monitoring sensor 3 is mounted on the slide plate 4 via the threaded rod 5, an opening is provided in the middle of the cover plate 6, a mounting rod 8 is provided in the opening of the cover plate 6, one end of the mounting rod 8 passes through the cover plate 6 through the opening, and the other end of the mounting rod 8 is fixedly mounted on the microseismic monitoring sensor 3.

[0019] The shell 1 is made of a circular steel pipe with a wall thickness of 3 to 5 mm, and its outer diameter matches the aperture of the mine monitoring hole.

[0020] The slide rail 2 is composed of two steel rails with a direction of 180°.

[0021] The mounting rod 8 is provided with a multi-section connection mechanism and an opening is provided in the middle.

[0022] A signal cable 9 is provided on the microseismic monitoring sensor 3 , and the signal cable 9 passes through the hole of the mounting rod 8 and is connected to the microseismic monitoring sensor 3 .

[0023] A compression spring 7 is provided on the mounting rod 8 , one end of the compression spring 7 is fixedly connected to the mounting rod 8 , and the other end of the compression spring 7 is pressed on the cover plate 6 .

[0024] Four openings are arranged around the cover plate 6, and the cover plate 6 is fixed to the inner wall of the mine borehole by drilling screws in the openings.

[0025] According to the needs of the project, a hole is drilled at a suitable location, and the specific construction method is the existing technology. Before the housing 1 is fixedly installed on the inner wall of the drill hole, two slide rails 2 with a direction of 180° are fixedly installed on the inner wall of the housing 1, and their function is to enable the slide plate 4 to move freely on the slide rail 2, thereby changing the position monitored by the sensor 3. The function of the housing 1 is to protect the sensor 3 from being damaged under the stress of the rock mass.

[0026] One end of the sensor 3 is connected to a signal cable 9, which is led out through the hole of the mounting rod 8. A threaded rod 5 is fixedly mounted on one end of the slide 4, and a cavity is provided at the other end of the microseismic monitoring sensor 3. The two are connected by threads, and the slide 4 can control the position of the sensor 3 by moving on the slide rail 2.

[0027] During installation, first determine the length of the mounting rod 8, pass the signal cable 9 through the mounting rod 8, then install the sensor 3 on the slide plate 4, push the mounting rod 8 so that the slide plate 4 enters the slide rail 2 on the inner wall of the housing 1 to the specified position. Then pass the cover plate 6 through the mounting rod 8, tighten the screws around the cover plate 6, and squeeze the compression spring 7 to complete the installation.

[0028] When adjusting the position of the sensor 3, unscrew the screws on the cover plate 6, remove the cover plate 6, move the sensor 3 on the slide rail 2 through the mounting rod 8, adjust the length of the mounting rod 8, and then reinstall the cover plate 6. When recovering the sensor 3, unscrew the screws on the cover plate 6, remove the cover plate 6, rotate the mounting rod 8 to remove the sensor 3 from the threaded rod 5 of the slide plate 4, and then the sensor 3 can be taken out.

Claims

1. A sensor installation device for microseismic monitoring in mines, comprising a housing, characterized in that: The shell (1) is fixedly mounted on the inner wall of a mine borehole. A cover plate (6) is provided at one end of the shell (1) close to the borehole opening. Two slide rails (2) are fixedly mounted in parallel on the inner wall of the shell (1). A slide plate (4) is slidably mounted on the slide rail (2). A threaded rod (5) is fixedly mounted in the middle of the slide plate (4) close to the borehole opening. A microseismic monitoring sensor (3) is mounted on the slide plate (4) via the threaded rod (5). An opening is provided in the middle of the cover plate (6). A mounting rod (8) is provided in the opening of the cover plate (6). One end of the mounting rod (8) passes through the cover plate (6) through the opening. The other end of the mounting rod (8) is fixedly mounted on the microseismic monitoring sensor (3). The mounting rod (8) is provided with a multi-section connection mechanism and an opening is provided in the middle.

2. A sensor installation device for mine microseismic monitoring according to claim 1, characterized in that: The shell (1) is made of a circular steel pipe with a wall thickness of 3 to 5 mm, and its outer diameter matches the aperture of the mine monitoring hole.

3. A sensor installation device for microseismic monitoring in mines according to claim 1, characterized in that: The slide rail (2) consists of two steel rails with a direction of 180 degrees.

4. A sensor installation device for mine microseismic monitoring according to claim 1, characterized in that: The microseismic monitoring sensor (3) is provided with a signal cable (9), and the signal cable (9) passes through the hole of the mounting rod (8) and is connected to the microseismic monitoring sensor (3).

5. A sensor installation device for mine microseismic monitoring according to claim 1, characterized in that: A compression spring (7) is provided on the mounting rod (8), one end of the compression spring (7) is fixedly connected to the mounting rod (8), and the other end of the compression spring (7) is pressed onto the cover plate (6).

6. A sensor installation device for mine microseismic monitoring according to claim 1, characterized in that: The cover plate (6) is provided with four openings around its periphery, and the cover plate (6) is fixed to the inner wall of the mine borehole by drilling screws in the openings.

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