[1]孙 强,张泰丽,伍剑波,等.基于GIS与层次分析法的龙溪流域滑坡风险评价[J].华东地质,2018,39(03):227-233.[doi:10.16788/j.hddz.32-1865/P.2018.03.009]
 SUN Qiang,ZHANG Tai-li,WU Jian-bo,et al.Landslide risk assessment of the Longxi river basin based on GIS and AHP[J].East China Geology,2018,39(03):227-233.[doi:10.16788/j.hddz.32-1865/P.2018.03.009]
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基于GIS与层次分析法的龙溪流域滑坡风险评价()
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《华东地质》[ISSN:2096-1871/CN:32-1865/P]

卷:
39
期数:
2018年03期
页码:
227-233
栏目:
环境地质
出版日期:
2018-09-15

文章信息/Info

Title:
Landslide risk assessment of the Longxi river basin based on GIS and AHP
文章编号:
2096-1871(2018)03-227-07
作者:
孙 强张泰丽伍剑波王赫生
(中国地质调查局南京地质调查中心,南京 210016)
Author(s):
SUN QiangZHANG Tai-liWU Jian-boWANG He-sheng
(Nanjing Center,China Geological Survey,Nanjing 210016,China)
关键词:
层次分析法 风险评价 滑坡 龙溪流域 浙江
Keywords:
analytic hierarchy process(AHP) risk assessment landslide Longxi river basin Zhejiang Province
分类号:
P694
DOI:
10.16788/j.hddz.32-1865/P.2018.03.009
文献标志码:
A
摘要:
以浙江龙溪流域为例,基于GIS与层次分析法进行滑坡危险性和风险性评价。根据滑坡调查数据,选择坡度、坡向、地层岩性、地质构造、人类工程活动、降雨及灾害点分布密度7个评价因子,计算各评价单元滑坡危险性评价指数。通过分析滑坡危险性评价结果、人口及财产易损性等,对龙溪流域进行滑坡风险性评价。结果表明:龙溪流域极高危险区主要位于大峃镇樟坑、乌岩一带; 易损人口、财产密度与地貌具有相关性,地形平坦的区域,人口和物质财富集中,易损人口和财产密度相对较高; 滑坡极高风险区和高风险区主要分布在珊门村、店基坑、白门台及洞背村一带。滑坡风险评价结果与易损人口、财产密度分布差异较大,局部与危险性评价相似,通过结合自然属性和人文属性的滑坡风险评价更契合地方防灾减灾的管理需求。实地调研表明,本次滑坡风险评价结果基本符合龙溪流域滑坡造成的危害实际情况,可为龙溪流域城镇建设和人口分布再调整提供参考。
Abstract:
This paper reports landslide hazard and risk assessment of the Longxi river basin in Zhejiang Province based on GIS and AHP methods. Seven evaluation factors, including slope, aspect, lithology, structure, rainfall, human engineering activities and density of landslides, were extracted from the survey data to calculate landslide hazard assessment index of each evaluation unit. Landslide risk assessment of the Longxi river basin was undertaken using landslide hazard assessment results, population and property vulnerability. The results show that the high hazard zones of landslides are mainly located in Zhangkeng village and Wuyuan village of Daxue Town, and the densities of vulnerable population and property are related to local topography. In flat areas, where population and material wealth are relatively concentrated, occurrences of vulnerable population and property are also high. High risk zones and extremely high risk zones are mainly distributed in Shanmen village, Dianjikeng village, Baimentai village and Dongbei village. The assessment results of landslide risks vary greatly with the densities of vulnerable population and property but similar to zoning of landslide hazards, suggesting that landslide risk assessment is more suitable for the management needs of disaster prevention and mitigation through the combination of the characteristics of natural and human attributes. The field survey has proved that the assessment results of landslides risks accord basically with the actual situation of landslide disaster in the Longxi river basin, and can provide reference for construction and planning of the city and readjusting of population distribution in this area.

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备注/Memo

备注/Memo:
*收稿日期:2017-07-10 修订日期:2017-09-10 责任编辑:谭桂丽
基金项目:中国地质调查局“浙江飞云江流域地质灾害调查(编号:DD20160282)”项目资助。
第一作者简介:孙强,1983年生,男,工程师,主要从事环境地质调查、地质灾害勘察及防治工作。
更新日期/Last Update: 2018-09-26