1. College of Geosciences and Engineering, North China University of Water Resources and Electric Power, Zhengzhou, Henan, China
2. Center for Rock Instability and Seismicity Research, School of Resource and Civil Engineering, Northeastern University, Shenyang, China
3. School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou, Jiangsu, China
4. Alhada Mining Co., Ltd, Shandong Gold Group Co., Ltd, Xilingol League, Nei Mongol, China