Rock burst control method for roadway driving work surface of coal mine high-stress area

Abstract

The invention discloses a rock burst control method for a roadway driving work surface of a coal mine high-stress area. The rock burst control method includes the following steps that A, drilling detection is carried out on the roadway driving work surface of the high-stress area, and a rock burst control area is determined; B, drilling pressure relief is carried out in the rock burst control area, the drilling positions are distributed along a roadway, and two sets of drilled holes are formed in each drilling position; C, detonators are arranged in the second drilled hole and the third drilled hole, curing grout is injected in the fourth drilled hole, odd or even number marking is carried out in the drilling positions in the roadway according to the position sequence, and two times of explosion are adopted for pressure relief; D, after explosion, the tops of steel pipes are inserted into the fifth drilled hole, the sixth drilled hole and the seventh drilled hole, and reinforcement ribs are connected between the steel pipes located in each second drilled hole set; and E, along with driving of the roadway, the steps from A to D are executed circularly. The rock burst control method for the roadway driving work surface of the coal mine high-stress area can overcome the defects in the prior art and improves the control effect on rock burst.

Description

technical field [0001] The invention relates to the technical field of coal mine safety, in particular to a method for preventing and controlling rock burst in roadway excavation working faces in high-stress areas of coal mines. Background technique [0002] With the increase of mining depth and expansion of the scope, the geological structure conditions become more and more complicated, the ground stress and energy of coal and rock mass are greater, and the rock burst becomes more and more serious. However, roadway excavation is often accompanied by structure, coal and rock structure anomalies, gas anomalies, etc. in front of the roadway excavation. Therefore, the prevention and control of head-on rockburst in deep mine structure complex coal seam roadway excavation is currently a technical problem that needs to be solved. The danger caused by the destructive rock burst that occurs in the head of the roadway is increasing. At present, the prevention and control of this type...

AI Technical Summary

Problems solved by technology

However, this method only relieves and releases the rockburst near the working face, and there is still a hidden danger of rockburst during long-term use.