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Application of two sealing and one grouting sealing technique in fracture development zone of yangdong mine
Liu Kuangsheng, Huang Wenzheng, Wang Kaiwang
 1.Yangdong Mine of Jizhong Energy Fengfeng Group Corporation Ltd., Handan 056201, China; 2. Jizhong Energy Fengfeng Group Corporation Ltd, Handan 056201, China; 3. CCTEG Shenyang Research Institute, Fushun 113122, China


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