[1
]School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China
[2
]MOE Key Laboratory of High-speed Railway Engineering, Southwest Jiaotong University,
Chengdu 610031, China
[3
]National Engineering Laboratory for Technology of Geological Disaster Prevention in
Land Transportation, Southwest Jiaotong University, Chengdu, Sichuan 610031, China
[4
]China University of Geoscience (Beijing), School of Water Resources and Environment,
Beijing 100083, China