Wiring method for preventing wire breakage of micro-seismic monitoring system

Abstract

The invention provides a wiring method for preventing a wire of a micro-seismic monitoring system from being broken, which comprises the following steps: placing the wire in a protective tube with a slot in the side wall, connecting each protective tube, and burying the protective tubes in a deep groove of a roadway bottom plate, wherein the length of the protective tube is 1-2m, the width of the slot is 1-2.5 cm, and the depth of the deep groove is 20-50cm. By adopting the wiring method, the wire is placed in the protection pipe, and the protection pipe is buried in the deep trench, so that breakage of the wire of the micro-seismic monitoring system can be effectively avoided, the service life of the wire is greatly prolonged, the reliability of the monitoring system is ensured, and the stability of a coal seam roof and the accuracy of water inrush monitoring of a bottom plate are improved; and a more reliable technical support is provided for safe stoping of coal mining work.

Description

Technical Field

[0001] The invention relates to the technical field of microseismic monitoring systems, and in particular to a wiring method for preventing wire breakage of a microseismic monitoring system. Background Art

[0002] As coal mining develops deeper, coal mine dynamic disasters are becoming more and more apparent. The microseismic online monitoring system can monitor dynamic disasters such as coal and gas outbursts, coal mine water inrush, roof collapse, and rock burst in real time. When monitoring roof collapse and floor water inrush, the sensor must be retained in the goaf to accurately monitor the rock fracture of the roof and floor in the goaf, reduce the monitoring blind area, and improve the accuracy of monitoring. However, the current wiring method of the microseismic monitoring system is to pre-bury the sensor in the borehole or connect it to the support anchor rod through a conversion joint before the coal mining face is mined. The wires are all hung on the side of the coal roadway of the coal mining face, and then led out to the outside of the coal mining face to connect with the substation. The wires are often damaged by various operations in the roadway, causing the sensor to fail to work properly. In addition, the collapse of the roof behind the goaf caused almost all the wires in the goaf to be broken, making it impossible to accurately monitor the roof and floor conditions within the goaf. Summary of the invention

[0003] The technical problem to be solved by the present invention is how to avoid the breakage of the wire of the microseismic monitoring system.

[0004] The present invention solves the above technical problems through the following technical means:

[0005] The present invention provides a wiring method for preventing the wire of a microseismic monitoring system from breaking. The wire is placed in a protection tube with a groove in the side wall, the length of the protection tube is 1-2m, the width of the groove is 1-2.5cm, each protection tube is connected, and the protection tube is buried in a deep groove on the bottom plate of the tunnel, the depth of the deep groove is 20-50cm.

[0006] Beneficial effect: By adopting the wiring method of the present invention, placing the wires in a protective tube, and burying the protective tube in a deep trench, the wires of the microseismic monitoring system can be effectively prevented from breaking, the service life of the wires can be greatly extended, the reliability of the monitoring system can be ensured, the stability of the coal seam roof and the accuracy of the bottom plate water inrush monitoring can be improved, and more reliable technical support can be provided for the safe recovery of coal mining work.

[0007] Preferably, the end-to-end connection mode of the protection tube is threaded connection or socket connection.

[0008] Beneficial effects: The side wall of the protection tube is grooved to place the wire in the protection tube to protect the wire; the length of the protection tube is limited, and by connecting the protection tube to adapt to the length of the wire, the wire of the entire microseismic monitoring system is protected, thereby improving the accuracy of monitoring.

[0009] Preferably, one end of the protection tube is provided with an external thread, and the other end is provided with an internal thread.

[0010] Preferably, the thread length is 25-35 mm.

[0011] Preferably, a reducer is provided at one end of the protection tube.

[0012] Preferably, the length of the reducer is 25-35 mm.

[0013] Preferably, the protection tube is made of plastic or metal.

[0014] Preferably, the protective tube is a PVC tube or a steel tube.

[0015] The advantages of the present invention are:

[0016] The present invention places the conductor in a protective tube and buries it in a deep groove of the tunnel floor for common protection, which can prevent the conductor from being damaged by various operations in the tunnel and rocks falling from the roof of the goaf, effectively improve the stability of the monitoring system, and better ensure the safety of the coal mine. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the structure of the protection tube in the embodiment;

[0018] Figure 2 Schematic diagram of the structure of the protective tube in the embodiment. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described in combination with the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Unless otherwise specified, the test materials and reagents used in the following examples can be obtained from commercial sources.

[0021] If no specific techniques or conditions are specified in the examples, they can be carried out according to the techniques or conditions described in the literature in the art or according to the product instructions.

[0022] Example 1

[0023] This embodiment provides a wiring method for preventing wire breakage in a microseismic monitoring system, which is specifically as follows:

[0024] First, drill holes in the rock stratum of the coal seam bottom plate according to the sensor installation design point, bury the sensor in the rock stratum of the coal seam bottom plate, and fix the sensor by grouting in the drilled hole; dig a 20 cm deep trench near the outer wall position on the tunnel bottom plate, and the length of the deep trench is equal to the distance between the sensor and the collection substation outside the working face; place the wires in the protective tube 10 with grooves on the side wall, each protective tube 10 is connected by threads, and then buried in a 20 cm deep trench. All sensors are connected to the collection substation according to this wiring method.

[0025] like Figure 1 As shown, the protection tube 10 is 2m long, with an outer diameter of 36mm, an inner diameter of 30mm, and a wall thickness of 3mm. A groove 11 is opened along the entire protection tube 10, and the width of the groove 11 is 2cm. Standard internal threads 12 and external threads 13 are respectively provided at both ends of the protection tube 10. The thread length is 30mm. The internal threads 12 and the external threads 13 are matched. The internal threads 12 of one protection tube 10 are connected to the external threads 13 of another protection tube 10, and finally each protection tube 10 is connected. The length of the connection is exactly the same as the length of the deep groove, which plays a role in protecting the wire.

[0026] The material of the protection tube 10 is plastic or metal. The plastic protection tube 10 is preferably a PVC tube, while the metal protection tube 10 is preferably a steel tube.

[0027] In this embodiment, multiple protection tubes 10 are connected by threads. The connection distance is exactly the distance between the sensor and the collection substation outside the working face. The protection tube 10 is buried in a 20 cm deep trench on the tunnel floor. This can effectively prevent the microseismic monitoring system wires from being damaged or broken due to various operations in the tunnel, enable the sensor to work normally, ensure the reliability of the monitoring system, improve the stability of the coal seam roof and the accuracy of floor water inrush monitoring, effectively improve the stability of the monitoring system, and better ensure the safety of coal mines.

[0028] Example 2

[0029] This embodiment provides a wiring method for preventing wire breakage in a microseismic monitoring system, which is specifically as follows:

[0030] First, drill holes in the rock stratum of the coal seam bottom plate according to the sensor installation design point, bury the sensor in the rock stratum of the coal seam bottom plate, and fix the sensor by grouting in the drill hole; dig a 40 cm deep trench near the outer side of the tunnel bottom plate, and the length of the deep trench is equal to the distance between the sensor and the collection substation outside the working face; place the wire in the protective tube 10 with grooves in the side wall, connect each protective tube 10 by socket connection, and then bury it in a 40 cm deep trench. All sensors are connected to the collection substation according to this wiring method.

[0031] like Figure 1The protective tube 10 is 1.5m long, with an outer diameter of 36mm, an inner diameter of 30mm, and a wall thickness of 3mm. A groove 11 is opened along the entire tube of the protective tube 10, and the width of the groove 11 is 1.5cm. A reducer 12 is provided at one end of the protective tube 10. The length of the reducer 12 is 35cm. The diameter of the reducer 12 is slightly larger than the outer diameter of the other end of the protective tube 10. The other end of the protective tube 10 can be inserted into the reducer 12, and each protective tube 10 can be connected by socket connection. The length of the connection is exactly the same as the length of the deep groove, which plays a role in protecting the wire.

[0032] The material of the protection tube 10 is plastic or metal, and the protection tube 10 is preferably a PVC tube.

[0033] In this embodiment, multiple protection pipes 10 are connected by socket connection. The connection distance is exactly the distance between the sensor and the collection substation outside the working face. The protection pipe 10 is buried in a 20 cm deep groove on the tunnel floor. This can effectively prevent the microseismic monitoring system wires from being damaged or broken due to various operations in the tunnel, enable the sensor to work normally, ensure the reliability of the monitoring system, improve the stability of the coal seam roof and the accuracy of floor water inrush monitoring, effectively improve the stability of the monitoring system, and better ensure the safety of coal mines.

[0034] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. 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 embodiments of the present invention.

Claims

1. A wiring method for preventing wire breakage in a microseismic monitoring system, characterized in that: The conductor is placed in a protective tube with a groove in the side wall, the length of the protective tube is 1-2m, the width of the groove is 1-2.5cm, each protective tube is connected, and the protective tube is buried in a deep groove on the bottom plate of the tunnel, the depth of the deep groove is 20-50cm.

2. The wiring method for preventing wire breakage in a microseismic monitoring system according to claim 1, characterized in that: The protection pipe is connected in a threaded connection or a socket connection.

3. The wiring method for preventing wire breakage in a microseismic monitoring system according to claim 2, characterized in that: One end of the protection tube is provided with an external thread, and the other end is provided with an internal thread.

4. The wiring method for preventing wire breakage in a microseismic monitoring system according to claim 3, characterized in that: The thread length is 25-35 mm.

5. The wiring method for preventing wire breakage in a microseismic monitoring system according to claim 2, characterized in that: A reducer is provided at one end of the protection tube.

6. The wiring method for preventing wire breakage in a microseismic monitoring system according to claim 5, characterized in that: The length of the reducer is 25-35 mm.

7. The wiring method for preventing wire breakage in a microseismic monitoring system according to claim 1, characterized in that: The material of the protection tube is plastic or metal.

8. The wiring method for preventing wire breakage in a microseismic monitoring system according to claim 7, characterized in that: The protection tube is a PVC tube or a steel tube.

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