论文部分内容阅读
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 evaluation of geohazard vulnerability is affected by many factors, and there is uncertainty, ambiguity and complexity. Using AHP (Analytical Hierarchy Process) and GIS (Geographical Information System) spatial analysis and statistics, the complicated and influential factors can be qualitatively and quantitatively analyzed in a logical way, which can make the analysis and evaluation of geohazard proneness accord with the maximum Objective reality. Based on the geo-environmental conditions in the area, nine major factors influencing the geohazard development, including geotechnical type, geological structure and frequency of geological disasters, are selected. Based on the AHP and GIS platforms, the weight of each factor is determined, The establishment of the Lichuan County geological disaster proneness analysis and evaluation model. Through systematic and hierarchical superposition analysis and statistics combined qualitatively and quantitatively, the evaluation results are more scientific and reasonable and practical, indicating that the method is of high practicability and effectiveness.