Funding for this research was provided by:
the Natural Science Foundation China (41572264, 41877225)
the Fundamental Research Funds for the Central Universities, CHD (300102268717)
the Key Laboratory of Mine Geological Hazards Mechanism and Control (KF2017-16, KF2017-17)
Article History
Received: 3 June 2019
Accepted: 17 November 2019
First Online: 11 December 2019