1. Ph.D. Candidate, Engineering Research Centre of Diagnosis Technology of Hydro-Construction, Chongqing Jiaotong Univ., Chongqing 400074, China.
2. Associate Professor, Engineering Research Centre of Diagnosis Technology of Hydro-Construction, Chongqing Jiaotong Univ., Chongqing 400074, China (corresponding author).
3. Associate Professor, Chongqing Univ. of Science and Technology, Chongqing 401331, China.