Flood Damage Loss Assessment Based On GIS

In our country, land area is expansion, nature condition is complex, and flood disaster is frequently happen, flood disaster is one of the important restricted reasons to the social economic sustained development in our country. The loss assessment of flood disaster may be used to provide the decision-making base for flood prevention, fighting drought, rushing to deal with emergency, curing disaster. And it also used to check the data of disaster statue, scientifically supervise cure disaster, and evaluate the benefit provided by the behavior of flood prevention and decrease disaster, flood control engineering, and none-engineering measure. The study target of this paper is to more explore the technology and method of flood and water logging disaster loss assessment based on GIS technique, and make it progress toward the practicability.Through analysising the mechanism and attribute character of flood damage, the postulate of flood disaster loss assessment is expressed based on GIS technique. Through the study of spatial distributing technology of social economic data, the paper generalized establishing spatial distributing technology database method of Heihe Jinpen reservoir dam break flood damage loss estimation as an example. The flood damage loss rate calculation model was established through study on the conception. And the flood damage loss rate in inundated influence areas was determined through analysis related data. The flood damage loss assessment model based on spatial information grid is established on the GIS platform, and the dam break flood damage loss was preassessment.The result shows that the technique and method of flood damage loss assessment model established is applicable and reliable, and it can be used in the application of flood control and command, emergency, curing disaster, checking the data of disaster statue, flood control engineering benefit assessment, and flood disaster insurance compensate.