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基于GIS的京藏高速公路京张段沿线地质灾害危险性评价 被引量:4

Risk Assessment of Geological Hazards Along Jing-Zhang Section of Jing-Zang Expressway Based on GIS
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摘要 在京藏高速公路(G6)京张段沿线地质环境条件调查的基础上,选取了地质灾害点密度、工程岩组、年均降雨量、斜坡坡度、斜坡高差、断裂、地震动峰值加速度、公路、河流、植被类型等10个地质灾害危险性评价因子,利用层次分析法确定评价因子权重,采用专家经验法对评价因子进行分级赋值。通过ArcGIS平台得到地质灾害危险性区划图。依据危险性评价结果将京藏高速公路京张段地质灾害危险程度进行了分段,共分为9段。其评价成果为京藏高速公路京张段地质灾害防治与安全运营提供科学依据。 On the basis of the survey of the geological environment conditions along the Jing - Zhang section of Jing-Zang Expressway(G6), ten evaluating factors on the geological hazards, hazards point density, engineering rock groups, average annual rainfall, gradient of slope, slope altitude difference, fault, seismic ground motion peak acceleration, highway, river, vegetation types, are selected. The weight of the factors is ascertained by the analytic hierarchy process. Expert experience method is used to classify and assign a value for each factor. Geological hazard zoning map is obtained through ArcGIS platform. The road is divided into 9 sec- tions based on the geological hazards degree of the Jing-Zhang section of the Jing-Zang Expressway. The evaluation results provide scientific basis for geological hazard prevention and safe operation of Jing-Zhang section of Beijing-Tibet expressway.
作者 李焕彬 张春山 申俊峰 孟华君 张向营 LI Huan-bin;ZHANG Chun-shan;SHEN Jun-feng;MENG Hua-jun;ZHANG Xiang-ying(College of Earth Science and Resources,China University of Geosciences,Beijing 100083,China;Institute of Geomechanics,Chinese Academy of Geological Sciences,Beijing 100081,China)
出处 《西部探矿工程》 CAS 2018年第10期4-8,共5页 West-China Exploration Engineering
基金 京津冀协同发展区活动构造与区域地壳稳定性调查(DD20160267)项目 中国地质科学院基本科研业务费专项经费(YYWF201523)共同资助
关键词 京藏高速公路京张段 地质灾害 危险性评价 层次分析法 GIS Jing - Zhang section of Jing-Zang Expressway geological hazards risk assessment analytical hierarchy process GIS
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