Surrounding rock stability control method adapted for coal mining area main roadway

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12221887
APP PUB NO 20230063143A1
SERIAL NO

17605771

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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The present disclosure relates to a technical field of coal mining, in particular to a surrounding rock stability control method adapted for a coal mining area main roadway. The method comprises the following steps: reinforcing support on a roof and two sides of the mining area main roadway on a basis of an original support form; digging a safety roadway along a stop line of a present working face required by coal mine design, and supporting the safety roadway, wherein a protective coal pillar is formed between the safety roadway and the mining area main roadway; performing slitting blasting on the roof in the safety roadway, wherein blast holes are arranged on a roadway corner line on one side of the present working face to form a pre-splitting slit; and performing stoping at a next working face after completing coal mining at the present working face when stoping at the present working face advances to the safety roadway. By cutting the roof and relieving pressure at the stop mining line of the working face, an influence of mining disturbance on stability of the mining area main roadway in the stoping process of the working face is reduced, and by reinforcing support, a yielding deformation capacity of the mining area main roadway is improved, and the stability of the surrounding rock of the mining area main roadway is further improved.

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Patent Owner(s)

  • CHINA UNIVERSITY OF MINING AND TECHNOLOGY, BEIJING

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Jiang, Jian Beijing, CN 84 533
Wang, Jiong Beijing, CN 28 111
Yu, Guangyuan Beijing, CN 5 5

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