1. Faculty of Engineering Technology, Universiti Tun Hussein Onn Malaysia, Parit Raja 86400, Johor, Malaysia
2. Information Engineering, Fujian Forestry Vocational and Technical College, Nanping 353000, China
3. State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China
4. School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China