1. Shaanxi Provincial Key Laboratory of Geological Support for Coal Green Exploitation, Xi’an University of Science and Technology , Xi’an 710054 , China
2. College of Geology and Environment, Xi’an University of Science and Technology , Xi’an 710054 , China
3. Institute of Ecological Environment Restoration in Mine Areas of West China, Xi’an University of Science and Technology , Xi’an 710054 , China