基于GIS的修水县地质灾害危险性评估研究

Research on Risk Assessment of Geological Disasters in Xiushui County Based on GIS

滑坡灾害作为一种与人们生命紧密相连的常见自然灾害,对其进行危险性评价研究极为重要。以江西省九江市修水县作为研究区域,以修水县243个滑坡地质灾害点作为研究对象,根据对修水县滑坡灾害的发育特征和关联因素的分析,选取了九大评价因子,利用信息量模型和AHP对修水县进行滑坡地质灾害危险性分区。其按危险程度分为极低、低、中等、高和极高5个危险区,分别占总面积的4.25%、14.97%、32.14%、35.17%和13.58%。综合研究区滑坡概况对各危险区进行分析,为研究区的地质灾害预防提供建议。

Landslide disaster is a common natural disaster closely related to people's lives,so it is very important to evaluate its risk.In this paper,Xiushui county,Jiujiang city,Jiangxi province is taken as the research area,243 landslide geological disaster points in Xiushui county are taken as the research object,according to the analysis of the development characteristics and related factors of landslide disaster in Xiushui county,nine evaluation factors are selected,and the risk zoning of landslide geological disaster in Xiushui county is carried out by using information model and AHP.According to the degree of risk,it can be divided into five risk areas:extremely low,low,medium,high and extremely high,accounting for 4.25%,14.97%,32.14%,35.17%and 13.58%of the total area respectively.Based on the general situation of landslide in the study area,the risk areas are analyzed to provide suggestions for the prevention of geological disasters in the study area.