基于 AHP 及 GIS 平台的黎川县地质灾害易发性评价

摘要

地质灾害易发性评价受到多种因素的影响，存在着不确定性、模糊性及复杂性。采用 AHP(层次分析法)，结合 GIS(地理信息系统)的空间分析统计，以合乎逻辑的方式将复杂的影响因素定性、定量化，可使地质灾害易发性分析和评价结果最大限度的符合客观实际情况。黎川县地质灾害易发性评价以区内地质环境条件为基础，筛选出影响地质灾害发育的岩土类型、地质构造、地质灾害频率等9大因子，基于 AHP 及 GIS 平台，确定各因子权重，建立了黎川县地质灾害易发性分析评价模型。通过定性和定量相结合的系统化、层次化的叠加分析统计，评价结果较为科学合理、切合实际，表明该方法具有较高的实用性和有效性。%The assessment of geological hazard is affected by many factors,such as uncer-tainty,fuzziness and complexity.By using AHP (analytic hierarchy process),combined with GIS (Geographic Information System)spatial statistical analysis,to conform to the logical manner the complex effect of qualitative factors and quantitative,geological disaster prone analysis and evaluation of the results of maximum conforms to the objective reality. Lichuan County geological disaster prone evaluation on geological environment conditions based screened 9 factor of influence the development of geological hazards in the type of rock and soil,geological structure,geological disaster frequency,based on AHP and GIS plat-form to determine the weight of each factor,the establishment of the Lichuan County geo-logical disaster susceptibility analysis and evaluation model.Through qualitative analysis and quantitative analysis,the results of the evaluation are more scientific and reasonable,practi-cal,and show that this method is practical and effective.