1. Institute of Geomechanics, Chinese Academy of Geological Sciences; Beijing 100081 China
2. Key Laboratory of Neotectonic Movement and Geohazard; Ministry of Land and Resourses; Beijing 100081 China
3. China Railway Eryuan Engineering Group CO. LTD; Sichuan 610031 China
4. The Institute of Crustal Dynamics, China Earthquake Administration; Beijing 100085 China