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Drilling-torque coal layer rock burst predicting device and predicting method thereof

A technology of rock burst and coal seam, applied in the field of coal mine prediction devices, to achieve the effects of avoiding disasters, ensuring safety, and simple structure

Inactive Publication Date: 2012-10-03
LIAONING TECHNICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently there is no device that can accurately predict coal seam rockburst

Method used

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  • Drilling-torque coal layer rock burst predicting device and predicting method thereof
  • Drilling-torque coal layer rock burst predicting device and predicting method thereof

Examples

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Embodiment Construction

[0010] Examples, see attached figure 1 , 2 The cuttings torque prediction coal seam rockburst device is a torque thrust sensor 3 fixedly installed in the output end of the coal electric drill 1, and a collector ring 8 is arranged on the left end periphery of the torque thrust sensor 3, and the collector ring 8 is connected to the coal seam. A stopper 2 is installed between the output ends of the electric drill 1 and is fixedly connected together. The stopper 2 is used to fix the stator of the slip ring 8 . Dress closing sleeve 9 on torque thrust sensor 3 outer walls, in sealing sleeve 9, on the outer wall of torque thrust sensor 3, form 45 0 Three resistance rosettes 4 are installed in the included angle, and the closing sleeve 9 plays the role of protecting the resistance rosette 4. The resistance rosette 4 is connected to the conductor 8-1 of the collector ring 8 rotor, and the conductor 8-1 passes through the closure sleeve 9 The wire hole 9-1 on. The output of the slip ...

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Abstract

The invention belongs to a predicting device for coal mine and in particular relates to a drilling-torque coal layer rock burst predicting device and a predicting method thereof. The device comprises an electric coal drill (1), a twist drill stem (6) and a drill bit (7), wherein a torque / thrust sensor (3) is connected into the output end of the electric coal drill (1); a collecting ring (8) is arranged on the periphery of the left end of the torque / thrust sensor (3); a closed sleeve (9) is arranged at the periphery of the torque / thrust sensor (3) and on the right side of the collecting ring (8); a resistive rosette (4) is bonded and fixed to the outer wall of the torque / thrust sensor (3) within the closed sleeve (9); the output of the collecting ring (8) is connected to a data acquirer (10); and the output of the data acquirer (10) is connected to a data recorder (11). When the drill stem of the electric coal drill rotates, a strain signal is transmitted to the data acquirer and amplified by the data acquirer; and then the amplified strain signal is transmitted to the data recorder. The device is simple in structure, convenient to mount, and simple and convenient for operation.

Description

technical field [0001] The invention belongs to a prediction device for coal mines, in particular to a drilling cuttings torque prediction device for coal seam rock burst and a prediction method thereof. Background technique [0002] my country's coal mines are one of the countries with the most severe rock bursts in the world. With the gradual development of mining, the frequency of rock bursts is increasing, and the hazards are also increasing. Rock bursts may cause gas outbursts and gas explosions and other secondary disasters, causing casualties and economic losses, seriously restricting the safe production of coal mines. The problem of accurate prediction of rock burst has become an urgent research topic to be solved in the development of deep resources in my country. The occurrence of rock burst is that the stress in the coal rock exceeds its ultimate strength. The strain energy is released to form a rock burst disaster. Due to the high ground stress on the coal seam, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L3/14G01L1/22G01V9/00
Inventor 李国臻潘一山徐连满李忠华于文鑫唐巨鹏
Owner LIAONING TECHNICAL UNIVERSITY
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