城市地质2026，Vol.21Issue(3)：347-354,8.DOI:10.3969/j.issn.2097-3764.2026.03.008
基于信息量模型的地质灾害风险评价研究
Geological hazard risk assessment using the information value model:a case study of Pingqiao District,Xinyang City,Henan Province
摘要
Abstract
This study conducted a geological hazard risk assessment for Pingqiao District,Xinyang City,Henan Province,utilizing ArcGIS spatial analysis and the information value model.Nine evaluation factors—including slope gradient,elevation,and engineering geological rock groups—were integrated to map geological hazard susceptibility.Hazard assessment was performed by incorporating rainfall data,while vulnerability was evaluated using indicators such as population density,building density,and road density.Risk zoning was subsequently derived through matrix overlay analysis.The results show that the study area is predominantly characterized by low risk,covering 96.99%of the total area.Medium-risk zones account for 3.01%of the area and are mainly distributed in landslide-and collapse-prone sections along Zhenleishan Shihe South Road-Haotang,as well as in the ground collapse risk zone in Gaoyan Village,Xingji Town.Based on the evaluation results,risk management recommendations are proposed:medium-risk areas should focus on monitoring,early warning,and localized engineering measures,whereas low-risk areas should emphasize public monitoring and preventive awareness.This study provides a scientific basis for disaster prevention and mitigation in the region.关键词
地质灾害/信息量模型/风险评价/平桥区Key words
geological hazards/information value model/risk assessment/Pingqiao District引用本文复制引用
李晶,张振静,曹阳,戴学成,周敏,廉丽荣..基于信息量模型的地质灾害风险评价研究[J].城市地质,2026,21(3):347-354,8.基金项目
河南省自然资源厅"河南省信阳市平桥区1∶5万地质灾害风险调查(普查)评价项目(豫地灾项目[2021]42号)"资助 （普查）
