ABSTRACT
Mountain flood disaster analysis and evaluation is an important content and key technology of the mountain flood disaster prevention capacity improvement project, including flood control capacity of small watersheds in massif areas, early warning indicators of important villages, classification of crisis zone and drawing of crisis zone map. Taking the mountain flood disaster prevention capacity improvement project of Yuyao in 2020 as an example, through the calculation of design flood and rainstorm, the crisis zone is classified by using flood grade, the early warning threshold of important villages is analyzed and calculated, and the map of danger zones is drawn. It provides detailed and comprehensive basic technical support for mountain flood disaster early warning, plan preparation, transfer and resettlement, group survey and group prevention, mountain flood gully flood control, etc. It shows that the mountain flood disaster prevention ability of Yuyao has been improved and the defense system is relatively complete.
