基于GIS与AHP法的岩溶塌陷易损性评价及其在城市建设规划中的意义

Evaluation of vulnerability of karst collapse and significance in the urban construction planning based on GIS-analytic hierarchy process

文章以桂林规划中心城区为例,利用地质环境要素通过层次分析法(AHP)对岩溶塌陷易损性进行评价,并通过MapGIS软件实现可视化。选取了人口密度、城市规划用地用途及道路用途3个影响岩溶塌陷易损性的地质环境因素,建立了岩溶塌陷易损性评价指标体系和评价方法,并对研究区进行了评价,依据预测分区指标计算,研究区岩溶塌陷易损分区结果为高易损区的面积约174.27 km^2;中易损区的面积约41.10 km^2;低易损区的面积约243.45 km^2;非易损区面积约421.18 km^2。

This paper takes the central urban area of guilin planning as an example to evaluate the vulnerability of karst collapse through the analytic hierarchy process(AHP)with geological environment elements,and realize visualization through MapGIS software.Selected the population density,urban planning,land use and road use three factors influencing the vulnerability of karst collapse geological environment,set up the karst collapse vulnerability evaluation index system and evaluation method,and the study area is evaluated,based on partitioning index calculation,the karst collapse in the study area vulnerability zoning results for region the vulnerable area of about 174.27 km^2;The area of vulnerable area is about 41.10 km^2;The area of low vulnerable area is about 243.45 km^2;The area of non-vulnerable area is about 421.18 km^2.