1. Ph.D. Candidate, College of Water Conservancy and Hydropower Engineering, Hohai Univ., Nanjing, Jiangsu 210098, PR China.
2. Professor, College of Water Conservancy and Hydropower Engineering, Hohai Univ., Nanjing, Jiangsu 210098, PR China (corresponding author).
3. Engineer, Water Conservancy Bureau of Jiangsu Province, Nanjing, Jiangsu 210029, PR China.
4. Associate Professor, College of Water Conservancy and Hydropower Engineering, Hohai Univ., Nanjing, Jiangsu 210098, PR China.