基于GIS叠加分析的洪水避险转移分析

安徽省地理位置特殊,洪涝灾害频发,有50%的耕地、60%的人口及70%的国民生产总值处在江河洪水威胁之下。本文利用GIS叠加分析,以同马大堤防洪保护区洪水淹没信息为基础,综合避险转移分析相关影响因素,如人口的分布、安置区的条件、撤离时的道理情况等进行分析,从而确定需要转移的人员、制定转移的路线以及规划安置的场所,为防洪决策提供依据,保障人民生命财产安全。

The geographical position of Anhui Province is special,and the flood disaster is Frequent,50%of the cultivated land,60%of the population and 70%of the GNP are under the threat of river floods.This paper uses GIS overlay analysis,based on the flood information of Tongma levee flood protection area,Comprehensive analysis of risk aversion transfer related factors,such as the distribution of population,resettlement area conditions,the reason for evacuation,so as to determine the need for transfer of personnel,formulate the transfer route and planning the place for resettlement,provide basis for flood control decision-making and guarantee people's life and property safety.