Method for optimizing outburst-prevention technical measures for coal and gas outburst mine

A technical measure, a gas outburst technology, applied in the field of optimization of coal and gas outburst prevention technical measures in mines, can solve problems such as unscientific evaluation results, reduce gas control costs, shorten drilling construction time, and reduce drilling The effect of the amount of work
CN105569724AInactive Publication Date: 2016-05-11HUNAN UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUNAN UNIV OF SCI & TECH
Publication Date
2016-05-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for optimizing outburst-prevention technical measures for a coal and gas outburst mine. The method comprises the following specific steps: 1), various outburst-prevention technical measures are made according to the on-site condition of a coal mine; 2), a value of a cluster evaluation index under each outburst-prevention technical measure is determined; and a cluster evaluation index matrix is established; 3), the outburst-prevention technical measures made in the step 1) are divided into multiple grades, and white functions of each cluster evaluation index in different grades in the technical schemes are determined; 4), the weight coefficient of each cluster evaluation index is determined; 5), index fixed weight cluster coefficients are solved, and a fixed weight cluster coefficient matrix is established; 6), the largest coefficient in the fixed weight cluster coefficient matrix is found, and the corresponding outburst-prevention technical measure is the optimal technical scheme. With the adoption of the method, the optimal outburst-prevention technical measure for the coal mine can be acquired, the gas treatment cost is reduced, the drilling workload is reduced, drilling construction time is shortened, and a basis is laid for increase of gas suction capacity on a coal seam and comprehensive treatment of gas in the mine.
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Description

technical field

[0001] The invention belongs to the field of mine gas prevention and control, in particular to an optimization method of coal and gas outburst mine outburst prevention technical measures. technical background

[0002] Mine gas is the general term for harmful gases in coal mines, generally methane (CH 4 ), which mainly exist in coal seams and surrounding rocks, and are flammable, explosive, suffocating and toxic. During the mining of coal resources, there are four types of gas accidents: gas explosion, coal and gas outburst, gas burning and gas suffocation.

[0003] For coal and gas outburst mines, in order to reduce the coal seam gas pressure and gas content to meet the coal seam gas pressure < 0.74MPa and gas content < 8m 3 / t requirements, mines often adopt protective layer mining and gas drainage methods to relieve pressure and eliminate outbursts in mining coal seams in advance, and only when the effect inspection and regional verification meet th...

Claims

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