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Geotechnical Impact of 2008 Wenchuan Earthquake
This paper reviews the geotechnical impact of the 2008 Wenchuan Earthquake gleaned from references obtained through internet and other sources. It briefly describes the seismo-tectonic and geological setting of the seismic source region, and discusses various geotechnical aspects of the event. Strong ground motions and fault displacements in a setting of steep mountainous terrains trigger many failures of natural slopes and man-made structures. Coseismic hazards include landslides, debris flows and formation of landslide dams. These ground failures not only increase earthquake damage and hamper rescue and recovery effort, but also generate a secondary flood hazard due to potential breach of landslide dams. The epicentral region has also many high water-storage embankment dams, which seem to fare quite well. Finally, the event has set the stage for latent geological hazard caused by earthquake-weakened slopes and/or metastable landslide/debris-flow deposits. This hazard would materialize either in an aftershock or heavy storm/snow-melt event.
Geotechnical Impact of 2008 Wenchuan Earthquake
This paper reviews the geotechnical impact of the 2008 Wenchuan Earthquake gleaned from references obtained through internet and other sources. It briefly describes the seismo-tectonic and geological setting of the seismic source region, and discusses various geotechnical aspects of the event. Strong ground motions and fault displacements in a setting of steep mountainous terrains trigger many failures of natural slopes and man-made structures. Coseismic hazards include landslides, debris flows and formation of landslide dams. These ground failures not only increase earthquake damage and hamper rescue and recovery effort, but also generate a secondary flood hazard due to potential breach of landslide dams. The epicentral region has also many high water-storage embankment dams, which seem to fare quite well. Finally, the event has set the stage for latent geological hazard caused by earthquake-weakened slopes and/or metastable landslide/debris-flow deposits. This hazard would materialize either in an aftershock or heavy storm/snow-melt event.
Geotechnical Impact of 2008 Wenchuan Earthquake
Lo, Robert C. (author)
Second International Conference on Geotechnical and Earthquake Engineering ; 2013 ; Chengdu, China
IACGE 2013 ; 694-703
2013-10-09
Conference paper
Electronic Resource
English
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