甘肃省宕昌县地质灾害易发性评价  

Susceptibility Assessment of Geological Hazards in Dangchang County,Gansu Province

作　　者：李超然 袁广祥 LI Chaoran;YUAN Guangxiang(College of Geosciences and Engineering,North China University of Water Resources and Electric Power,Zhengzhou 450046,China)

机构地区：[1]华北水利水电大学地球科学与工程学院,郑州450046

出　　处：《地质灾害与环境保护》2025年第1期21-25,共5页Journal of Geological Hazards and Environment Preservation

基　　金：第二次青藏高原综合科学考察研究资助项目(2019QZKK0904);河南省重点研发专项(No.221111321500)。

摘　　要：甘肃省宕昌县位于青藏高原东缘,内外动力地质作用强烈,地质灾害发育。本研究旨在对宕昌县地质灾害的易发性进行全面评价。基于甘肃省地质灾害数据库,采用层次分析法和GIS空间分析统计方法,选取地形地貌、地质条件、植被和降雨作为评价因子,对宕昌县地质灾害易发性进行了评价。结果表明宕昌县地质灾害高易发区主要分布在岷县干流南河镇-何家堡乡-城关镇段、甘江头-官亭-临江铺-两河口段岷江和角弓河狮子乡-新寨镇段。研究结果将为防灾减灾管理、国土空间规划和用途管制等提供基础依据。Dangchang County in Gansu Province,located at the eastern margin of the Qinghai-Tibet Plateau,experiences intense endogenic and exogenic geological processes,resulting in frequent geological hazards.This study aims to conduct a comprehensive susceptibility assessment of geological hazards in Dangchang County.Based on the Gansu Provincial Geological Hazard Database and employing the Analytic Hierarchy Process(AHP)combined with GIS spatial analysis and statistical methods,evaluation factors including topography,geological conditions,vegetation,and rainfall are selected for the assessment.Results indicate that high-susceptibility zones are predominantly distributed along the southern Hezhen-Hejiabao Township-Chengguan Town section of the Min River mainstream;the Ganjiangtou-Guanting-Linjiangpu-Lianghekou section of the Minjiang River,and the Shizi Township-Xinzhai Town section of the Jiaogong River.The findings provide a critical scientific support for disaster prevention and mitigation management,territorial spatial planning,and land-use regulation.

关 键 词：甘肃宕昌 地质灾害 易发性评价 层次分析法 

分 类 号：P694[天文地球—地质学] P56