基于ArcGIS的洪灾淹没范围及避难撤离方案研究  

Research on Inundation Area of Flood Disaster and Evacuation Plan Based on ArcGIS

作　　者：杨茜[1] 贾艾晨[1] 

机构地区：[1]大连理工大学建设工程学部水利工程学院,辽宁大连116024

出　　处：《水电能源科学》2011年第1期34-36,50,共4页Water Resources and Power

摘　　要：针对洪灾淹没范围分析及逃生路线计算问题,以辽河河段赵家滩险工为例,应用数字高程模型(DEM)生成网格,通过给定洪水总量,在假定淹没水面为平面的情况下,利用ArcGIS VBA计算得到洪水淹没范围和水深。在此基础上划分避难单元、布置安置点。根据Dijkstra算法结合路权函数计算并选取最短路径,为该河段在面临洪灾时避难撤离提出了总体方案。Taking the critical levee section of Zhaojiatan in Liaohe river for an example,the DEM model is applied to solve the problem of flood disaster inundation area and escape routes.ArcGIS VBA is applied to calculate flood inundation area and depth.Assuming that inundation surface is plane,the flood submergence range and water depth are calculated with the grids generated by DEM under the given flood volume.And then,evacuation units are divided,and the shelters are arranged.Finally,the shortest path are obtained with the calculation results of Dijkstra algorithm and road right function.Thus,it provides a whole plan for evacuation when facing the flood disaster.

关 键 词：洪灾避难 淹没水深 淹没范围 最短路径 撤离方案 

分 类 号：TV122.4[水利工程—水文学及水资源]