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A coal mine rockburst well up and down advanced pre-control method

A technology of ground pressure and coal mines, applied in mining equipment, earthwork drilling, mining equipment, etc., to achieve the effect of strong operability, convenient establishment and large control range

Active Publication Date: 2021-07-16
TAIYUAN UNIV OF TECH
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Problems solved by technology

[0004] In order to solve the problem of prediction and pre-control of rock burst in underground coal seam mining, the present invention provides a method for advanced pre-control of rock burst wells in coal mines

Method used

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  • A coal mine rockburst well up and down advanced pre-control method

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Embodiment Construction

[0019] A coal mine rock burst well up and down advanced pre-control method includes the following steps.

[0020] S100~Before the mining of the coal seam, drill holes in the coal seam and its roof and floor to measure the impact tendency of the coal and rock mass, and divide the impact tendency into four grades: no impact, weak impact, impact and strong impact according to the measurement results .

[0021] S200~If the measurement result is no impact, no control is required; if the measurement result is weak impact or above, determine the impact strength and control technology according to the following steps.

[0022] S300~Drill vertical holes from the surface of the working face down to the coal seam, take the cores of each coal rock layer and measure their mechanical properties, and measure the compressive strength, tensile strength, compressive strength, bulk density, thickness, modulus of elasticity and Poisson's ratio.

[0023] S400~Establish a numerical simulation mod...

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Abstract

The invention belongs to the advanced pre-control technology of rock burst in coal mine mining, in particular to a method for advanced pre-control of rock burst wells in coal mines. It solves the problem of rockburst prediction and pre-control in coal seam mining. By measuring the mine’s impact tendency and impact energy release intensity before coal seam mining, the technical means of ground fracturing control and the technical parameters of underground pre-cracking control are reasonably selected to complete the analysis of rock formations. The weakening of advanced fracturing can realize the prevention and control of rock burst from the source. The integrated application of the above-ground and underground stope fracturing technologies of the present invention realizes mutual complementation and mutual support, and realizes the comprehensive management of the upper and lower wells in a real sense. The effective prevention of rock burst has wide application prospects.

Description

technical field [0001] The invention belongs to the advanced pre-control technology of rock burst in coal mine mining, in particular to a method for advanced pre-control of rock burst wells in coal mines. Background technique [0002] Scholars at home and abroad have done a lot of research on the mechanism of rock burst. They believe that rock burst can be divided into structural type, gravity type and intermediate type. Release caused. In the actual production process, the occurrence of impact disasters is mostly gravity-based, especially for hard-roof mining areas in my country. Due to the high strength and thickness of the roof, the roof is not easy to break during the mining process, resulting in energy accumulation that easily induces rock burst. However, at present, the control of rock burst at home and abroad has been unable to achieve breakthroughs. The control of such disasters is mostly limited to passive defense in the underground range, and cannot be treated fro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/26E21F17/18
CPCE21B43/26E21F17/18
Inventor 于斌高瑞邰阳夏彬伟
Owner TAIYUAN UNIV OF TECH
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