Journal
ENVIRONMENTAL EARTH SCIENCES
Volume 65, Issue 4, Pages 1049-1054Publisher
SPRINGER
DOI: 10.1007/s12665-011-0953-8
Keywords
Rock slopes; Numerical modeling; Particle flow code; Failure behavior
Funding
- National Science Foundation of China [41002114]
- West Light Foundation of the CAS [09R2200200]
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In the village of Donghekou (in Qingchuan County, Sichuan Province, China), a major landslide was triggered by the Wenchuan earthquake in 2008 with more than 10 x 10(6) m(3) of rock displaced. The kinematic behavior of this landslide is simulated using a 2D discrete element model. The numerical model used in this work is composed of discs bonded together. The initial boundary conditions are applied along the ball-wall contacts by using an initial velocity estimated from the strong motion data. The constraints are mainly issued from the final geometry of the landslide including its capacity to dam the river. The modeling thus indicates that a low friction coefficient (about 0.1) is required to account for the actual landslide characteristics. The runout behaviors are analyzed and some useful conclusions are drawn.
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