Influence of Pillars in Drifting Chamber on Roof Stability During Sublevel Open Stoping with Backfill
1.Shahe Zhongguan Iron Mine Co., Ltd., Hebei Iron and Steel Group, Xingtai 054100, Hebei, China
2.Hebei Technology Innovation Center for Intelligent and Efficient Low-Carbon Mining of Complex Iron Ore, Xingtai 054100, Hebei, China
3.College of Mining Engineering, North China University of Science and Technology, Tangshan 063210, Hebei, China
4.Collaborative Innovation Center of Green Development and Ecological Restoration of Mineral Resources, North China University of Science and Technology, Tangshan 063210, Hebei, China
5.Hebei Laboratory of Mining Development and Safety Engineering, North China University of Science and Technology, Tangshan 063210, Hebei, China
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