基于ArcGIS的广东省汕尾市地质灾害风险评价  

Risk assessment of geological disasters based on ArcGISin Shanwei City, Guangdong Province

作　　者：李煜楠 甄俊伟 屈向阳 卢星谕 LI Yunan;ZHEN Junwei;QU Xiangyang;LU Xingyu(Seventh Geological Brigade of Guangdong Geological Bureau,Huizhou 516008,Guangdong,China)

机构地区：[1]广东省地质局第七地质大队,广东惠州516008

出　　处：《世界地质》2024年第4期586-599,共14页World Geology

基　　金：中央财政地质灾害防治专项(441501-2022-00826)。

摘　　要：为了给汕尾市防灾减灾管理及国土空间规划提供科学依据,笔者基于ArcGIS平台,采用信息量法进行汕尾市地质灾害风险评价和区划,并在此基础上提出风险管控建议。结果表明,汕尾市地质灾害类型包括崩塌、滑坡、泥石流,规模以小型为主。时间上,地质灾害主要发生在4至10月,空间上,地质灾害主要分布于陆河县。地质灾害高风险区、中风险区、低风险区面积占比分别为6.59%、29.81%、63.60%,其中高风险区面积289.81 km 2,主要分布于北部低山地区、西南局部丘陵地区、中东部低山地区。提出地质灾害风险管控建议:加强地质灾害隐患识别,完善地质灾害风险评价工作,全力做好重点时段的地质灾害防范工作。To provide a scientific basis for disaster prevention,reduction management and land spatial planning in Shanwei,the authors conducted a geological disaster risk assessment and zoning using the information value method based on the ArcGIS platform,and proposed risk management and control recommendations based on the results.The results indicate that the types of geological disasters in Shanwei include collapses,landslides,and debris flows,primarily on a small scale.In terms of timing,geological disasters mainly occur from April to October,and spatially,they are predominantly distributed in Luhe County.The areas of high-risk,medium-risk,and low-risk zones account for 6.59%,29.81%,and 63.60%,respectively,with the high-risk zone covering an area of 289.81 km 2,primarily located in the northern low mountain area,southwestern hilly areas,and central-eastern low mountain areas.The recommendations for geological disaster risk management and control include strengthening the identification of geological disaster risks,improving geological disaster risk assessment work,and fully implementing preventive measures during critical periods for geological disasters.

关 键 词：地质灾害 ARCGIS 易发性 危险性 风险评价 汕尾市 

分 类 号：P694[天文地球—地质学] P237