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Research and application of mine pressure control technology for double free island working face in extremely close distance coal seam
Yang Genghui1, Cheng Zhibin2, Wang Fan3, Li Jianguang1, Zhang Hanwen1
1. Lingshi Huayuan Coal Industry Co., Ltd., Lingshi 031300, China; 2. Henan Polytechnic Industrial Technology Research Institute Co., Ltd., Jiaozuo, 454003, China; 3. Henan Chuangrui Energy Technology Co., Ltd., Jiaozuo 454000, China


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