基于斜坡单元的山区城镇地质灾害风险快速评价研究——以江口镇为例
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摘要
本文以江口镇为研究实例,以县城高清DEM为底图,对研究区所有具有潜在隐患的可能成灾的、同时具有威胁对象的斜坡进行了划分圈定并编号。基于《半定性半定量斜坡风险评估表》,采用工程地质类比法,对圈定的每一个斜坡进行实地逐坡调查,获取斜坡的危险性得分和易损性评分。采用自然间断法将危险性和易损性划分为高、中、低三个等级,然后再以评估出的危险性等级和易损性等级分别为行向量和列向量,建立风险评估矩阵。通过风险矩阵,获得每一个斜坡的风险等级,最后将各斜坡的风险等级在地理信息图上和VR全景摄影图上展示,形成风险评价产品。
Taking Jiangkou Town as a case study and based on the high definition DEM of county town,all the slopes in the study area with potential danger and threatened object are delineated and numbered.Based on the"semi-qualitative and semi-quantitative slope risk assessment table"and using the engineering geological analogy method,the survey was conducted on each delineated slope to obtain the risk scores and vulnerability scores.The risk and vulnerability are divided into high,medium and low levels with the method of natural discontinuity,and then a risk assessment matrix is established by putting the assessed risk level and the vulnerability level as row vector and column vector respectively.Through the risk matrix,the risk level of each slope is obtained.At last,the risk grade of each slope is shown on the geographic information graph and VR panoramic photography to form a risk assessment of product.
Taking Jiangkou Town as a case study and based on the high definition DEM of county town,all the slopes in the study area with potential danger and threatened object are delineated and numbered.Based on the"semi-qualitative and semi-quantitative slope risk assessment table"and using the engineering geological analogy method,the survey was conducted on each delineated slope to obtain the risk scores and vulnerability scores.The risk and vulnerability are divided into high,medium and low levels with the method of natural discontinuity,and then a risk assessment matrix is established by putting the assessed risk level and the vulnerability level as row vector and column vector respectively.Through the risk matrix,the risk level of each slope is obtained.At last,the risk grade of each slope is shown on the geographic information graph and VR panoramic photography to form a risk assessment of product.
引文
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[14]朱良峰,殷坤龙,张梁,等.GIS支持下的地质灾害风险分析[J].长江科学院院报,2002,(5):42-45.
[15]殷坤龙,陈丽霞,张桂荣.区域滑坡灾害预测预警与风险评价[J].地学前缘,2007,14(6):85-97.
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[17]齐信,唐川,陈州丰,等.地质灾害风险评价研究[J].自然灾害学报,2012,21(5):33-40.
[18]唐亚明,程秀娟,薛强,等.基于层次分析法的黄土滑塌风险评价指标权重分析[J].中国地质灾害与防治学报,2012,23(4):40-46.
[19]李春燕,孟晖,张若琳,等.中国县域单元地质灾害风险评估[J].水文地质工程地质,2017,44(2):160-166.
[20]陈伟.西南山区城镇建设地质灾害风险管理控制方法研究[D].四川成都:成都理工大学,2011.
[2]陈成名.西南山区城镇地质灾害易损性评价理论与实践——以汶川县为例[D].四川成都:成都理工大学,2010.
[3]王磊.山区城镇地质灾害危险性评价方法研究——以重庆武隆县羊角场镇为例[D].北京:中国地质科学院,2015.
[4]向喜琼,黄润秋.基于GIS的人工神经网络模型在地质灾害危险性区划中的应用[J].中国地质灾害与防治学报,2000,11(3):26-30.
[5]张超,陈艳,张宇飞,等.基于多元线性回归模型的云南昭通地质灾害易发性评价[J].水文地质工程地质,2016,43(3):159-163.
[6]吴树仁,石菊松,张春山,等.滑坡风险评估理论与技术[M].北京:科学出版社,2012.
[7]吴树仁,石菊松,张春山,等.地质灾害风险评估技术指南初论[J].地质通报,2009,28(8):995-1005.
[8]张茂省,唐亚明.地质灾害风险调查的方法与实践[J].地质通报,2008,27(8):1205-1216.
[9]Fell R,Corominas J,Bonnard C,et al.Guidelines for landslide susceptibility,hazard and risk zoning for land use planning[J].Engineering Geology,2008,102(3/4):85-98.
[10]Leroi E,Bonnard C,Fell R,et al.Risk assessment and management[M].Weinheim:wiley-vchverlaggmbh&Co.kgaa,2005:693-694.
[11]Murgese D,Fontan D,Pirulli M,et al.Debris-Flow Risk Assessment and Land Management at Municipal Scale[M].Landslide Science and Practice.Springer Berlin Heidelberg,2013:391-397.
[12]Van Westen C J.Geo-Information tools for Landslide Risk Assessment:An overview of recent developments[C]//Landslides,Evaluation&Stabilization.Proceedings 9th International Symposium on Landslides,2004:39-56.
[13]B.Temesgen,M.U.Mohammed.Natural hazard assessment Using GIS and remote sensing Met-hods,with particular reference to the landslides in the Wondogene Area,Ethiopia[J].Physics and Chemistry of the Earth,Part C:Solar,Terrstrial&Planetary Science,2015,26(9):665-675.
[14]朱良峰,殷坤龙,张梁,等.GIS支持下的地质灾害风险分析[J].长江科学院院报,2002,(5):42-45.
[15]殷坤龙,陈丽霞,张桂荣.区域滑坡灾害预测预警与风险评价[J].地学前缘,2007,14(6):85-97.
[16]高华喜,殷坤龙.基于GIS的滑坡灾害风险空间预测[J].自然灾害学报,2011,20(1):31-36.
[17]齐信,唐川,陈州丰,等.地质灾害风险评价研究[J].自然灾害学报,2012,21(5):33-40.
[18]唐亚明,程秀娟,薛强,等.基于层次分析法的黄土滑塌风险评价指标权重分析[J].中国地质灾害与防治学报,2012,23(4):40-46.
[19]李春燕,孟晖,张若琳,等.中国县域单元地质灾害风险评估[J].水文地质工程地质,2017,44(2):160-166.
[20]陈伟.西南山区城镇建设地质灾害风险管理控制方法研究[D].四川成都:成都理工大学,2011.