Liming Qiu
State Key Laboratory of the Ministry of Education of China for High-efficient Mining and Safety of Metal Mines, University of Science and Technology Beijing, Beijing 100083, P. R. China; Pingdingshan Tianan Coal Mining Co., Ltd., Pingdingshan 467099, P. R. China;
China

Yi Zhu
State Key Laboratory of the Ministry of Education of China for High-efficient Mining and Safety of Metal Mines, University of Science and Technology Beijing, Beijing 100083, P. R. China;
China

Qiang Liu
State Key Laboratory of the Ministry of Education of China for High-efficient Mining and Safety of Metal Mines, University of Science and Technology Beijing, Beijing 100083, P. R. China;
China

Minggong Guo
Pingdingshan Tianan Coal Mining Co., Ltd., Pingdingshan 467099, P. R. China;
China

Dazhao Song
State Key Laboratory of the Ministry of Education of China for High-efficient Mining and Safety of Metal Mines, University of Science and Technology Beijing, Beijing 100083, P. R. China;
China

Anhu Wang
Technical Support Centre for Prevention and Control of Disastrous Accidents in Metal Smelting, University of Science and Technology Beijing, Beijing 100083, P. R. China;
China