School of Geological Engineering and Surveying;
Chang'an University;
Key Laboratory of Western China Mineral Resources and Geological Engineering;
Xi'an 710054;
China;
Institute of Crustal Dynamics;
China Earthquake Administration;
Beijing 100085;
China;
China Electronic Research Institute of Engineering Investigations and Design;
Xi'an 710055;
China;
Tangjiagou; two-branch; rock; avalanche; Lushan; earthquake; Deformation; and; movement; process; Discrete; element; modeling;