Three-dimensional modeling of the impact behavior of debris flows in areas affected by earthquakes

The 2008 Wenchuan earthquake triggered many landslides and caused high volumes of loose solid material to collect in gully drainage areas; over time, this eroded became the source for multiple debris flows. On August 13, 2010, a heavy rainstorm struck areas that were impacted by earthquake. resulting flows more than 2000 deaths destroyed numerous buildings, bridges, traffic facilities. To mitigate and/or prevent negative consequences such disasters future, it is important have reliable effective methods predicting impact behavior these In study, we investigated post-earthquake using three-dimensional model based on particle flow code PFC3D. We verified our simulating granular test laboratory. quantified process force material; comparing data data, found PFC3D was capable accurately dynamic then used estimate propagation processes forces exerted check dams two large occurred area. results agreed with collected during field surveys, can reproduce had recently experienced significant seismic activity.