Rock burst control method for coal mining tunnel

A technology for ground pressure shock and coal mine roadway, which is applied in mining devices, surface mining, mining equipment, etc., can solve problems such as insufficient energy release, achieve the effect of small blasting workload, ensure safe production, and reduce risks

Inactive Publication Date: 2016-02-24
XIAN UNIV OF SCI & TECH
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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 rele

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  • Rock burst control method for coal mining tunnel

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Embodiment Construction

[0025] In order to enable those skilled in the art to better understand that the technical solutions of the present invention can be implemented, the present invention will be further described below in conjunction with the accompanying drawings and specific examples, but the given examples are not intended to limit the present invention.

[0026] The present invention provides a method for prevention and control of rock burst in coal mine roadway, which comprises the following implementation steps: determining the key prevention and control area 4 for rock burst; setting a first guiding pressure relief roadway 5 and a second guiding Pressure relief lane 6; blasting pressure relief holes are respectively set in the first guiding pressure relief lane 5 and the second guiding pressure relief lane 6 along the surrounding rock of the roof and the surrounding rock of the floor to perform blasting and pressure relief and detect the pressure relief effect, specifically, The top view o...

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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...

Claims

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Application Information

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IPC IPC(8): E21C41/16E21F17/18F42D3/00
CPCE21C41/16E21F17/18F42D3/00
Inventor 宋勇军
Owner XIAN UNIV OF SCI & TECH
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