1. School of Emergency Management and Safety Engineering, China University of Mining and Technology Beijing, Beijing, China
2. School of Energy and Mining Engineering, China University of Mining and Technology Beijing, Beijing, China
3. Xuzhou Group Xinjiang Tianshan Mining Co, Aksu City, China
4. Jining Jinqiao Coal Mine, Shandong, China
5. Inner Mongolia Huangtaolegai Coal Co., Ltd, Ordos, China