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Environmental Earth Sciences, 78(24):716. Experimental and numerical investigations of the seismic response of a rock-soil mixture deposit slope. SUN Z L, KONG L W, GUO A G, et al., 2019.
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Hydrogeology and Engineering Geology, 38(5):87-91.(in Chinese with English abstract) Numerical analysis of the failure mechanism of the Donghekou rockslide in the Wenchuan earthquake region with FLAC.
FLAC3D FAST LAGRA SERIES
Science in China Series E (Technological Sciences), 46(S1):28-40. General regularity of dynamic responses of slopes under dynamic input. Two patterns of dynamic responses of single-free-surface slopes and their threshold height. Progress of Geo-Disaster Mitigation Technology in Asia. Dynamic analysis of earthquake amplification effect of slopes in different topographic and geological conditions by using ABAQUS//WANG F W, MIYAJIMA M, LI T L, et al. MITANI Y, WANG F W, OKEKE A C, et al., 2013. Topographic site effects and the location of earthquake induced landslides. Chengdu: Chengdu University of Technology. Study on complex slopes response law under earthquake action. Research of dynamic response patterns of high steep rock slope under earthquake effects. Hydrogeology and Engineering Geology, 45(2):77-83.(in Chinese with English abstract) Test research on the influence of seismic wave frequency on the dynamic response of a layered rock slope. LIU H D, NIU L F, YUAN F Q, et al., 2018. Study on dynamic response of landslide supported by pressure-type anchor under earthquake. FLAC (fast Lagrange analysis of continua) slope user's guide (version 5.0). Bulletin of the Seismological Society of America, 92(8):3180-3189. Anomalous concentrations of seismically triggered rock falls in Pacoima canyon:are they caused by highly susceptible slopes or local amplification of seismic shaking?. Seismic site amplification induced by topographic irregularity:results of a numerical analysis on 2D synthetic models. (in Chinese with English abstract)ĭI FIORE V.2010. China Earthquake Engineering Journal, 42(2):529-535. Dynamic response of loess slopes based on the shake table test. Site effects modelling applied to the slope affected by the suusamyr earthquake (Kyrgyzstan.1992). (in Chinese with English abstract)īOURDEAU C, HAVENITH H B.2008. Advances in research on the geohazard effect of active faults on the southeastern margin of the Tibetan plateau. Bulletin of the Seismological Society of America, 87(3):701-709.īAI Y J, NI H Y, GE H.2019. Topographic effects on the seismic response of steep slopes. Bulletin of the Seismological Society of America, 87(3):692-700.ĪSHFORD S A, SITAR N, LYSMER J, et al., 1997. Analysis of topographic amplification of inclined shear waves in a steep coastal Bluff. Therefore,it is necessary to strengthen the risk analysis and prediction of mountains under the condition of near-field strong earthquakes.ĪSHFORD S A, SITAR N.1997. Finally,it is predicted that the damage of the Yigong Landslide remnant will obviously increase when considering both horizontal and vertical seismic waves. Stability analysis shows that the Yigong Landslide remnant keeps stable with a safety factor of 1.27 in static condition however,the results under the earthquake show the occurrence of instability and failure.
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The calculated results are basically identical with the frequency analysis. Under the action of seismic waves,the predominant frequencies of the top and both sides of the mountain appear different degrees of amplification,and that in the mountain interior along the height upward shows the change of first increasing then decreasing,and then increasing again. The predominant frequencies of the mountain top mainly concentrate below 1 Hz,while that of both sides of the mountain top vary from 2~6 Hz. Results show that the overall predominant frequency of the Yigong Mountain is at a low value. Based on the results,the amplification effect of the Yigong Mountain under seismic waves is discussed and the stability of the Yigong Landslide remnant under the condition of near-field strong earthquakes is predicted. Taking the Yigong Landslide as an example,this article analyzes the frequency response characteristics of the Yigong Mountain by using the FLAC 3D finite difference method. The Yarlung Zangbo River Grand Canyon area in Tibet is a highly prone area for earthquake-triggered landslides,where several landslides have occurred before.