1. College of Civil Engineering, Hefei University of Technology, Hefei, China
2. Division of Mathematical Sciences, School of Physical and Mathematical Sciences, Nanyang Technological University, Jurong West, Singapore
3. School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, China
4. School of Earth and Environment, Anhui University of Science and Technology, Huainan, China
5. Institute of Acoustics Chinese Academy of Sciences, Beijing, China