1. Ph.D. Student, College of Engineering, China Univ. of Geosciences-Wuhan, No. 388 Lumo Rd., Wuhan, Hubei Province 430074, China.
2. Professor and Director, College of Engineering, China Univ. of Geosciences-Wuhan, No. 388 Lumo Rd., Wuhan, Hubei Province 430074, China (corresponding author).