摘要
结合层次分析法,选取地层岩性、地质构造、降雨、地形坡度、NDVI(归一化植被指数)、人类工程活动6项评价指标,构建五峰县地质灾害易发性评价指标体系,进行地质灾害易发性评价和分区。结果表明:地质灾害中高易发区约占31.40%,主要分布于河流流域及附近的斜坡地带、道路和断裂构造带两侧、工程活动密集区;低易发区约占68.60%,主要分布在山间谷地、植被覆盖率高、工程活动较少的区域;评价结果可为五峰县地质灾害区划和预防提供参考。
Combined with the hierarchical analysis method,six evaluation indexes,namely,stratigraphic lithology,geological structure,rainfall,topographic slope,NDVI(Normalized Vegetation Index),and human engineering activities,were selected to construct an evaluation index system for the geologic hazard susceptibility in Wufeng County and carry out geological hazard susceptibility evaluation and zoning.The results show that about 31.40%of the geologic hazards are in the medium and high susceptibility zones,which are mainly distributed in the river basins and nearby slopes,on both sides of the roads and rupture tectonic zones,and in the areas with intensive engineering activities.The proportion of low susceptibility areas is about 68.60%,mainly distributed in mountain valleys,areas with high vegetation cover and less engineering activities.The evaluation results can provide a reference for geologic disaster zoning and prevention in Wufeng County.
作者
杨吉红
李剑
颜良宇
王玉杰
YANG Jihong;LI Jian;YAN Liangyu;WANG Yujie(Hubei Jiaotou Wutian Expressway Co,Ltd,Tianmen 431701,Hubei,China;Hubei Provincial Transportation Planning and Design Institute Co.,Ltd.,Wuhan 430051,China;School of Engineering,China University of Geosciences(Wuhan),Wuhan 430074,China)
出处
《路基工程》
2024年第5期39-43,共5页
Subgrade Engineering
基金
湖北省交通运输厅科技项目(2011-700-3-31)。
关键词
地质灾害
层次分析法
自然间断法
易发性评价
灾害预防
geological hazards
hierarchical analysis method
natural discontinuity method
vulnerability assessment
disaster prevention
作者简介
杨吉红(1975-),男,湖南益阳人。高级工程师。主要从事道路工程设计咨询方面的研究与管理工作。E-mail:332859467@qq.com。
