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Study on the influence law and mechanism of cutting permeability enhancement on extraction radius in high gas and hard coal seam
Guo Zeming 1, Zhang Jiale 2
1. Bofang Coal Mine, Shanxi Lanhua Technology Entrepreneurship Co., Ltd., Jincheng 048026, China; 2. Jincheng Mei 'an Mining Technology Service Co., Ltd., Jincheng 048026, China


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