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Dynamic Evaluation of Flood Disaster Loss and System Implementation on Jingjiang Flood Diversion District Based on GIS

Author: XieTian
Tutor: ZhangYongChuan；ZhouJianZhong
School: Huazhong University of Science and Technology
Course: System Analysis and Integration
Keywords: GIS Submerging analysis Dynamic flood disaster loss evaluation Hydrodynamics Jingjiang flood diversion district
CLC: TV87
Type: Master's thesis
Year: 2011
Downloads: 86
Quote: 2
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Abstract


The flood disaster loss assessment plays an important role in flood control planning, flood risk management, flood insurance, flood control and disaster mitigation assessment and formulation of related laws and regulations. In this field, experts from home and abroad have done lots of researches and exploration. This work is supported by a grant from the National Basic Research Program of China (Project No. 2007CB714107). This research is applied to Flood disaster loss evaluation on Jingjiang flood diversion district and demonstrate theoretical as well as practical values.Firstly, this paper did researches on spatial distribution method to solve the problem that Social-economic data is unevenly distributed in each administrative unit, which leads to inaccurate input data of the disaster loss evaluation model. Then the dynamic submerging analysis model which is based on GIS spatial analyst functions and two dimensional flood evolution results is provided. Based on this model, combined with the flood disaster loss calculation model, a flood disaster loss dynamic evaluation model has been proposed. This model has a loosely coupled design pattern based on data exchange and it is divided into three slave modules: submerging analysis module, Flood disaster Loss evaluation module and Spatial attribute data comprehensive management module. Different from static flood disaster loss evaluation nowadays, the model developed by this paper can directly display the situation of submerge and evaluate the disaster loss caused by flood in each time units. Therefore, in every moment of the flood evolution, the submerged area, water depth, flow velocity and flood disaster loss values can be saved and displayed in the format of grid, which provide useful information to decision-maker.The system has been applied on Jingjiang Flood diversion district, Zhanghe Reservoir and the experiment area of Foshan. The demonstration system is implemented on Jingjiang Flood diversion district. This model combined with GIS analysis methods and mathematical ways offers an accurate and efficient method of flood disaster loss evaluation.

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