Funding for this research was provided by:
State Key Laboratory of Water Resource Protection and Utilization in Coal Mining (SHJT-16-30.16)
National Key R & D Program of China (2016YFC0501103)
Article History
Received: 11 May 2019
Revised: 10 July 2019
Accepted: 25 July 2019
First Online: 3 August 2019