Funding for this research was provided by:
National Natural Science Foundation of China (51504257, 51674266)
State Key Research Development Program of China (2016YFC0600704)
Fund of Yue Qi Outstanding scholars (2018A16)
Open Fund of the State Key Laboratory of Coal Mine Disaster Dynamics and Control at Chongqing University (2011DA105287- FW201604)
Article History
Received: 10 April 2019
Revised: 21 September 2019
Accepted: 10 January 2020
First Online: 31 January 2020
Compliance with ethical standards
:
: The authors declare no conflict of interest.