1. School of Transportation Engineering, Jiangsu Vocational Institute of Architectural Technology, Xuzhou, Jiangsu 221100, China
2. Xuzhou Metro Group Co., Ltd, Xuzhou, Jiangsu 221000, China
3. Yunlong Lake Laboratory of Deep Underground Science and Engineering, Xuzhou, Jiangsu 221008, China
4. State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China