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Method for predicting danger of rock burst in underground mining of coal mine

A technology for ground pressure shock and underground mining, applied in measuring devices, force/torque/power measuring instruments, instruments, etc., can solve the problems of lack of accurate determination of local surrounding rock impact risk, poor adaptability to harsh underground environments, and high equipment costs , to achieve the effect of eliminating casualties and property losses, low cost and strong pertinence

Pending Publication Date: 2018-11-23
CHINA UNIV OF MINING & TECH (BEIJING)
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AI Technical Summary

Problems solved by technology

Existing prediction methods are for the overall macroscopic prediction, lack of accurate determination of the impact risk of local surrounding rocks; moreover, the equipment used in it is expensive, difficult to maintain, and poorly adaptable to the harsh underground environment

Method used

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  • Method for predicting danger of rock burst in underground mining of coal mine
  • Method for predicting danger of rock burst in underground mining of coal mine

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Embodiment Construction

[0019] The specific embodiments of the present invention will be described in further detail below in conjunction with the drawings and embodiments. The following examples are used to illustrate the present invention, but not to limit the scope of the present invention.

[0020] Such as figure 1 As shown, the method for predicting the risk of rock burst in underground coal mining in this embodiment is as follows.

[0021] The first step: pilot drilling;

[0022] Pilot drilling is carried out in front of the working face of the roadway and the coal and rock masses on the two sides. The specific layout and drilling depth of the drilling should be conducted through comprehensive analysis and field tests on the mining method, mining conditions, and lithology of the roadway surrounding rock. determine;

[0023] The approximate position of the pilot drilling in this embodiment is as follows figure 2 As shown, the specific drilling layout and drilling depth should be determined according...

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Abstract

The invention provides a method for predicting the danger of rock burst in the underground mining of a coal mine, and relates to the technical field of coal mining. The method comprises the steps: pilot drilling, morphological analysis of a plastic zone, and rock burst prediction and grading. According to the invention, the pilot drilling is performed in front of a driving face of a tunnel or in coal and rock masses of two walls, and the form of different plastic zones of the pilot drilling are analyzed to determine the corresponding rock burst level of a corresponding tunnel surrounding rock,thereby achieving the accurate and timely discovery of the rock burst danger, facilitating the taking of the preventive measures, preventing accidents, and guaranteeing the life and property securityand the normal production of the coal mine.

Description

Technical field [0001] The invention relates to the technical field of coal mining, in particular to a method for predicting the risk of rock burst in underground coal mining. Background technique [0002] The coal industry is one of the main sources of energy in my country and one of the important pillars of my country’s economy. With the increase in the depth and intensity of coal mining resources, and the complexity of coalfield geological conditions, the problem of rock bursts in my country’s mines is particularly prominent As a result, dynamic disasters such as rock bursts in mines are increasing, seriously threatening the safety of coal mining. [0003] Rock burst, also known as rock burst, refers to the dynamic phenomenon of sudden violent destruction due to the instantaneous release of elastic deformation energy of the rock mass around the mine roadway or working face. It is often accompanied by coal and rock mass throwing, loud noises, and air waves. phenomenon. It is ver...

Claims

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Application Information

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IPC IPC(8): G01L5/00
CPCG01L5/0052
Inventor 赵志强高旭胡嘉英杨宵
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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