TY - JOUR
T1 - DDA validation of the mobility of earthquake-induced landslides
AU - Zhang, Yingbin
AU - Wang, Jinmei
AU - Xu, Qiang
AU - Chen, Guangqi
AU - X Zhao, John
AU - Zheng, Lu
AU - Han, Zheng
AU - Yu, Pengcheng
N1 - Funding Information:
This study has received financial support from the National Natural Science Foundation of China (Grant no. 51408511 ), the National Basic Research Program of China (973 Program) (Grant no. 2013CB036204 ) and the opening fund of State Key Laboratory of Geohazard Prevention and Geoenvironment Protection (Chengdu University of Technology) (Grant no. SKLGP2014K015 ). The financial support from these organizations is gratefully acknowledged. The authors also thank the editor and two anonymous reviewers for their helpful and insightful comments and language editing, which have greatly improved the quality of the paper.
PY - 2015/9/1
Y1 - 2015/9/1
N2 - This paper studies the run-out of earthquake-induced landslides. There are more than 20 mechanical models to explain long run-out of rapid landslides including some earthquake-induced landslides. However, notably few of them considered the effect of seismic loading on the run-out of landslides. In a previous study, we have proposed a model, which is called the multiplex acceleration model (MAM), to interpret the long run-out mechanism, and a shaking-table test has been performed to verify the MAM. Because the previous MAM is a conceptual model and only a single stone has been examined under sine waves by the shaking-table test, the MAM needs to be extended and further verified.In this paper, the MAM was extended by introducing the movement change that was induced by the so-called trampoline effect of earthquake loading, and the latest practical numerical simulation program, discontinuous deformation analysis (DDA), was used to verify the mobility of earthquake-induced landslides. After a conceptual landslide model was used to verify the effect of seismic loading on the mobility, the Donghekou landslide, which was a typical long run-out landslide that was induced by the 2008 Wenchuan earthquake, was analyzed. The results show that: the seismic loading could be one of the factors that could eventually help increase the run-out of landslides.
AB - This paper studies the run-out of earthquake-induced landslides. There are more than 20 mechanical models to explain long run-out of rapid landslides including some earthquake-induced landslides. However, notably few of them considered the effect of seismic loading on the run-out of landslides. In a previous study, we have proposed a model, which is called the multiplex acceleration model (MAM), to interpret the long run-out mechanism, and a shaking-table test has been performed to verify the MAM. Because the previous MAM is a conceptual model and only a single stone has been examined under sine waves by the shaking-table test, the MAM needs to be extended and further verified.In this paper, the MAM was extended by introducing the movement change that was induced by the so-called trampoline effect of earthquake loading, and the latest practical numerical simulation program, discontinuous deformation analysis (DDA), was used to verify the mobility of earthquake-induced landslides. After a conceptual landslide model was used to verify the effect of seismic loading on the mobility, the Donghekou landslide, which was a typical long run-out landslide that was induced by the 2008 Wenchuan earthquake, was analyzed. The results show that: the seismic loading could be one of the factors that could eventually help increase the run-out of landslides.
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U2 - 10.1016/j.enggeo.2014.08.024
DO - 10.1016/j.enggeo.2014.08.024
M3 - Article
AN - SCOPUS:84939192707
SN - 0013-7952
VL - 194
SP - 38
EP - 51
JO - Engineering Geology
JF - Engineering Geology
ER -