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Advanced three-dimensional treatment technology for mining deep lower coal group under multiple stress environment
Zeng Jianyong1,2, Wang Jinzhao1,2, Huang Chao1,2, Chai Yingying1,2
 1. Hebei Coal Research Institute Co., Ltd., Xingtai 054000, China; 2. Key Laboratory of Mine Water Disaster Detection and Prevention and Control, Xingtai 054000, China


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