Study on pressure-relief effect and protection scope of long-distance lower protective seam mining based on similar physical simulation and PFC3D

K Keliang Zhan Z Zhaohui Liu D Dejun Wei W Wei Yao (State Key Laboratory of Membrane Biology and Beijing Key Laboratory of Cardiometabolic Molecular Medicine, Institute of Molecular Medicine, College of Future Technology and Peking-Tsinghua Center for Life Sciences and International Data Group/McGovern Institute for Brain Research, Peking University) W Wei Zhou R Rongchang Zhu Y Yongmeng Yuan Y Yuzhong Yang D Dongliang Zhang (School of Materials and Chemistry) B Bing Li