Prevention method of rock burst in roadway of mining coal mine

Abstract

The invention provides a rock burst control method for a coal mining tunnel. The control method comprises the following steps: firstly, arranging detection devices in an upper tunneling tunnel and a lower tunneling tunnel, and carrying out analysis and judgment to find the key control area of a rock burst; tunneling a first guiding pressure relieving lane towards the center of the key control area along the upper tunneling tunnel; tunneling a second guiding pressure relieving lane along the lower tunneling tunnel, drilling explosion pressure relieving holes in the first and second guiding pressure relieving lanes towards top plate surrounding rock and bottom plate surrounding rock, mounting explosive into the holes, sealing the holes with yellow mud, and exploding the key control area for pressure relief and danger relief; conducting analysis and examination on the pressure relieving effect, and repeating the steps till the analysis and examination result meets the standard. The control method has the advantages that as the two guiding pressure relieving lanes are arranged in the center of the key control area, and deep hole pressure relieving explosion is carried out in the guiding pressure relieving lanes, centralized stress is transferred to a deep part, energy of the surrounding rock can be relieved sufficiently in advance, hazard of the rock burst can be reduced, rock burst is avoided, and the safe production of a mine is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of coal mining, and in particular relates to a method for preventing and controlling rock burst. Background technique [0002] Rock burst is one of the major disasters faced by coal mines in the world. In many countries and regions including my country, rock burst has occurred in coal mining, causing huge losses of personnel and equipment. With the increase of mining depth, the expansion of mining scope, and the complexity of mining boundary conditions, the prevention and control of rock burst is becoming more and more serious, which has become a recognized world-class problem. [0003] The prevention and control of mine rockburst danger includes two aspects: regional defense and local danger relief. Through mining protective layers, rationally arranging the mining range, pressure relief blasting, water injection and pressure relief and other danger relief measures, the energy of rockburst is released in adv...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to propose a new effective method for changing energy release and stress transfer, fully releasing rock burst, and reducing the impact The risk of ground pressure and the cost of anti-scouring to ensure safe production in coal mines

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