LIU Xiaoyu, YU Shibo, WANG Zhixiu, CAO Cong. Key control technology of no coal pillar mining method in thick layer and hard roof[J]. CHINA MINING MAGAZINE, 2023, 32(S1): 295-302. DOI: 10.12075/j.issn.1004-4051.20230231
    Citation: LIU Xiaoyu, YU Shibo, WANG Zhixiu, CAO Cong. Key control technology of no coal pillar mining method in thick layer and hard roof[J]. CHINA MINING MAGAZINE, 2023, 32(S1): 295-302. DOI: 10.12075/j.issn.1004-4051.20230231

    Key control technology of no coal pillar mining method in thick layer and hard roof

    • Compared with the general conditions of the roof, the problems caused by the self-forming roadway mining without coal pillars in the thick layer and hard roof are very prominent.This paper systematically summarizes the key control technologies for coal-pillarless mining on thick-bed hard roofs, including the adoption of graded comprehensive pre-splitting blasting technology system, high constant resistance and large deformation anchor cable support technology, and gangue and anti-scour support technology system, which improves the no coal pillar mining technology system.The technical framework of self-forming roadway mining without coal pillars further promotes the technological innovation of the coal mining industry.
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