基于加权信息量的镇江高新区滑坡地质灾害易发性评价
Susceptibility evaluation of landslide in the high-tech region of Zhenjiang based on weighted information
崔雨 1崔志鹏 2杨春杰 1金华丽 1谭燕 1方龙建1
作者信息
- 1. 江苏省地质矿产局第三地质大队,江苏镇江 212001
- 2. 江苏省地质矿产局第一地质大队,江苏南京 210041;自然资源部城市地下空间探测评价工程技术创新中心全要素测试实验室,江苏南京 210041
- 折叠
摘要
合理选取地质灾害影响因子并对因子进行优化分级是准确评价地质灾害易发性的关键.结合研究区实际情况,选取7个指标因子构建滑坡影响因子指标体系,并以各因子条件下滑坡灾害比例和信息量曲线的突变点为依据,对连续型评价指标因子进行优化分级.在此基础上,基于ArcGIS平台,运用层次分析法加权的信息量模型对镇江高新区滑坡灾害的易发性进行评价.根据易发区划分指标将研究区划分为高、中、低滑坡地质灾害易发区,划分结果与已有滑坡灾害分布有较好的对应关系,评价结果具有较高的准确性.该评价方法可为低山丘陵地区滑坡地质灾害的评价与防治规划提供参考.
Abstract
The key to the accurate evaluation of geological hazard susceptibility is to select the influencing factors and factor classifi-cation reasonably.According to the actual situation of the study area,seven index factors have been selected to build the landslide in-fluence factor index system.The continuous index factors of evaluation have been optimized and graded with the landslide disaster pro-portion and the abrupt point of information curve under each factor condition.Based on the grading and the ArcGIS platform,the infor-mation model weighted by analytic hierarchy process was used to evaluate susceptibility of landslide in the high-tech region of Zhen-jiang.The study area was divided into high,medium and low risk area,which corresponded well with the distribution of existing land-slides.This evaluation method can provide reference for the evaluation and control planning of landslide geological hazards in low moun-tain and hilly areas.
关键词
影响因子/因子分级/加权信息量模型/ArcGIS/滑坡易发性评价/镇江Key words
influence factor/factor grading/weighted information value model/ArcGIS/susceptibility evaluation of landslide/Zhenjiang引用本文复制引用
基金项目
江苏省地质矿产科研项目(2019KY03)
出版年
2024
NETL
NSTL
万方数据