1. College of Civil Engineering and Architecture, Guilin University of Technology, Guilin, China
2. Guangxi Key Laboratory of Geomechanics and Geotechnical Engineering, Guilin, China
3. Collaborative Innovation Center for Exploration of Hidden Nonferrous Metal Deposits and Development of New Materials in Guangxi, Guilin, China
4. Liuzhou OVM Machinery Co. Ltd, Liuzhou, China