Analysis of dam failure flood impact based on Mike for a reservoir dam
This paper conducts an analysis and calculation of a dam failure flood for the Wuqiangxi Reservoir dam.Based on the actual engineering conditions,the causes of dam failure are analyzed.The Mike software series is employed to construct a one-dimensional and two-dimensional coupled hydrodynamic model,which simulates the process and impact range of the dam failure flood.The results indicate that the maximum peak flow of the dam failure is 97 231.7 m3/s.When the flood reaches Changde City,the peak flow is less than the 100-year flood control standard of 31 600 m3/s,with minimal impact on the urban area.The maximum total inundation area downstream is approximately 183.2 km2,with Taoyuan County having the largest inundation area of 89.94 km2.The area with the maximum inundation depth is the town of Wuqiangxi,reaching about 20.02 m.This analysis can provide technical support for the safety management of the Wuqiangxi Reservoir dam and the evacuation planning for downstream towns.
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