Funding for this research was provided by:
the National Key Research & Development Program of China (2017YFC0804208)
National Natural Science Foundation of China (51774122)
National Natural Science Foundation of China (51774048)
National Natural Science Foundation of China (51504122)
Scientific Research Foundation of State Key of Coal Mine Disaster Dynamic and control ((2011DA105287-FW201605))
Article History
Received: 15 September 2018
Revised: 24 November 2018
Accepted: 14 January 2019
First Online: 8 February 2019