基于GIS的广西陆川县地质灾害危险性评价

Geological Hazard Risk Assessment in Luchuan,Guangxi Province Based on GIS

以广西陆川县为研究对象,结合历史地质灾害数据和地形地貌、地质构造、气候水文和人类工程活动等资料,选取了断层构造、坡度、灾害点密度、工程地质岩组、降水量、人类工程活动和水系这7个评价指标,构建了陆川县地质灾害危险性评价指标体系,将层次分析法(AHP)与综合指数评价模型相结合,最后基于地理信息系统(GIS)的空间叠加分析功能得到研究区地质灾害危险性评价结果.评价结果可为今后陆川县地质灾害的预防、土地利用规划的编制和生态环境的保护等提供科学参考.

Luchuan county is taken as the research object, the types, quantity and distribution of historical geological hazards and geological structure, landform, stratum lithology, climate, hydrology and human engineering activities data in the research area are collected, on the basis of field geological hazard survey. Then the weights of evaluation factors are applied in analytical hierarchy process （AHP） method and geo-logical hazards risk assessment model is established. According to spatial analysis function of GIS system, geological hazards risk assessment result of the research area is finally achieved. This result will provide scientific reference for geological hazard prevention, land use planning and ecological environment protection in Luchuan county in the future.