基于斜坡单元的广东省乡镇(街道)地质灾害风险调查评价——以乐昌市两江镇为例
Geological hazard risk investigation and evaluation of townships(streets)in Guangdong Province based on slope unit:taking Liangjiang Town of Lechang City as an example
邬铁1
作者信息
- 1. 广东省有色地质环境中心,广东 广州 510030
- 折叠
摘要
本文以广东省乐昌市两江镇为研究区,在调查孕灾地质环境条件和识别地质灾害隐患或风险的基础上,以斜坡单元为基本评价单元,应用综合指数法选取 9 类评价因子对工作区进行了地质灾害易发性评价,叠加降雨形成了各斜坡单元地质灾害危险性结果,采用矩阵分析法将地质灾害的危险性和易损性评价结果叠加运算完成了风险性评价.根据地质灾害风险评价结果:两江镇有 7个高风险斜坡、60 个中风险斜坡、261 个低风险斜坡.本次风险评价成果为两江镇国土空间规划和地质灾害应急管理提供有效依据.
Abstract
Taking Liangjiang Town,Lechang City,Guangdong Province,as the research area,on the basis of investigating the disaster-inducing geological environment conditions and identifying the hidden harzard or risk of geological disaster,the slope unit is selected as the basic evaluation unit,and 9 types of evaluation factors are selected by applying the comprehensive index method to evaluate the geological disaster susceptibility of the research area.The geological disaster risk results of each slope unit are formed by superposing rainfall.The risk evaluation is completed by superimposing the evaluation results of risk and vulnerability of geological disaster by using the matrix analysis method.According to the geological hazard risk assessment results,there are 7 high-risk slopes,60 medium-risk slopes and 261 low-risk slopes in Liangjiang Town.The results of this risk assessment provide an effective basis for the territorial planning and emergency management of geological disasters in Liangjiang Town.
关键词
地质灾害/风险评价/斜坡单元/两江镇Key words
geological disaster/risk assessment/slope unit/Liangjiang Town引用本文复制引用
出版年
2024
NETL
NSTL
万方数据