摘要
充分利用现代化的GIS技术,将多源化的地质灾害空间信息输入GIS的图形库和属性库,利用矢量叠加分析功能和空间属性数据的分析功能,实现地质灾害危险度的数学模型运算。通过对渝北区已有资料的收集整理,以自然地理单元作为地质灾害危险度评价的基本单元,采用综合指数模型和信息量模型两种方法进行渝北区地质灾害危险度研究,并进行对比分析,其危险度预测评价结果有利于地灾决策部门对区域地质灾害危险情况的宏观了解,为其制定灾害管理决策,进行预警规划分区提供依据,为防灾减灾服务。
On the basis of modern GIS technology, to input Spatial Information of geological disasters that comes from different sources into the graphic library and attribute database, by using the analysis functions of vector superposition and spatial attribute data, an operation with mathematic model is done to achieve the hazard degree of the geological disasters. Collecting and compilating the existing data of Yubei District, considering physical geography unit as the basic cell of geological Hazard degree assessment, this paper studied the geological hazard degree of Yubei Distrie hy using two models： comprehensive index model and information model, and analysed the results. These results are useful for the decision department to understand the regional geological disasters in a macroscopical way, and also can support making decisions of disaster management, early warming regionalization and serving disaster prevention and reduction.
出处
《地下空间与工程学报》
CSCD
2008年第6期1169-1176,共8页
Chinese Journal of Underground Space and Engineering
关键词
渝北区
地质灾害
危险度
Yubei District
geological disaster
geological hazard degree
