1. Ph.D. Candidate, College of Water Conservancy and Hydropower Engineering, Hohai Univ., Nanjing 210098, China.
2. Professor, College of Mechanics and Materials, Hohai Univ., Nanjing 210098, China (corresponding author).
3. Professor, College of Water Resources and Architectural Engineering, Northwest A&F Univ., Yangling 712100, China.
4. Lecturer, Faculty of Electric Power Engineering, Kunming Univ. of Science and Technology, Kunming 650093, China.