Source separation prevention and control method of coal mine shock ground pressure based on confirmation of load source dynamic and static areas

Abstract

The invention disclose a source separation prevention and control method of coal mine shock ground pressure based on confirmation of load source dynamic and static areas. Prevention and control are carried out in a shock initiation stage, and the prevention and control method comprises the following steps that (1) in the shock initiation stage, a stress limit equilibrium area of a coal body in mining space is determined, and according to the determined equilibrium area, a stress field of mining surrounding rock is divided into a static load area of the mining surrounding rock and a dynamic load area of the mining surrounding rock by using the border of the stress limit equilibrium area as a dividing line; (2) a rock mechanics method is adopted to monitor the static load area of the miningsurrounding rock, and a physical geography method is adopted to monitor the dynamic load area of the mining surrounding rock; and (3) prevention and control of the shock ground pressure are carried out by a coupling structure control method for a static load source existing in the static load area of the mining surrounding rock, and prevention of the shock ground pressure is carried out by a one-by-one source elimination method for a potential external load source in the dynamic load area of the mining surrounding rock. The problems of repeated arrangement, severe waste, jumbled monitoring data, untargeted prevention and control measures and poor overall prevention effect of shock ground pressure prevention measures are effectively solved.

Description

technical field [0001] The invention relates to a method for preventing rock burst, in particular to a separate-source prevention and control method for rock burst in coal mines based on the confirmation of dynamic and static areas of load sources. Background technique [0002] In recent years, with the continuous increase of coal mining depth, the intensity, frequency and area of ​​rock bursts have been increasing. However, for a long time, domestic and foreign research on the occurrence mechanism, monitoring methods, and prevention methods of rock burst have been out of touch with each other. The occurrence mechanism cannot be used to guide monitoring and prevention, and monitoring cannot be used to feed back the research on the occurrence mechanism. superior. For now, many mines are still unable to take active and effective prevention and control measures based on the theoretical research results of the mechanism of occurrence and the inductive analysis of long-term moni...

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a coal mine rock burst prevention and control method based on the confirmation of dynamic and static areas of the load source, which is used to solve the problems that current mines rely on experience, cannot prevent rock bursts in combination with the occurrence mechanism, and have serious waste of repeated monitoring and poor effects.