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Construction of the Vulnerability Evaluation Model of Rainfall Type Geological Disasters Based on ArcGIS
Author(s): 
Pages: 17-22
Year: Issue:  11
Journal: Water Conservancy Science and Technology and Economy

Keyword:  ArcGIS降雨预报地质灾害易发性评价灾害预警;
Abstract: 基于ArcGIS数据和降雨预报数据,设计一种降雨型地质灾害易发性评价模型.采用层次分析法将ArcGIS数据和降雨预报数据进行分解,利用归一化算法将数据向地理网格进行投影,最终获得2个指数下的7个因子,利用加权累加法,最终获得地质灾害易发性评价结果并给出4个等级的数据预警.最终经过对历史数据的对比实证计算,证实该数据具有较优的特异性和命中率表现.通过对降雨型地质灾害易发性评价体系进行深化研究,对相关的权重系数、斜率调整系数、截距调整系数等进行不断优化,可以使该评价结果更贴近实际发生值,为地质灾害的预防提供更有指导性和前瞻性的数据支持.
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