【摘 要】
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This research is devoted to Tangjiashan Lake,a quake landslide-dammed lake,situated in Sichuan Province,China,which was formed by a landslide triggered by the W
【机 构】
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Lomonosov Moscow State University, Faculty of Geography, 119991 Moscow, Russia;Institute of Mountain
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This research is devoted to Tangjiashan Lake,a quake landslide-dammed lake,situated in Sichuan Province,China,which was formed by a landslide triggered by the Wenchuan Earthquake on 12 May 2008.A STREAM_2D two-dimensional hydrodynamic model of Russia was applied to simulate the process of two flood scenarios:1,lake dam outbreak,and 2,dam overtopping.An artificial dam outbreak was made after the earthquake to lower the water level of the lake in 2008,which led to a great flood with a maximum water discharge of more than 6400 m3/s.The negative impact of the flood was reduced by a timely evacuation of the population.Flood hazards still remain in the event of new landslides into the lake and lake dam overtopping (Scenario 2),in which case a maximum water discharge at the dam crest would reach 5000 m3/s,placing the population of Shabacun and Shilingzi villages in the zone of flood impact.
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