公路泥石流灾害危险性分区研究  

The Study on the Risk Regionalization of Highway Debris Flow Disasters

作　　者：赵欢[1] 田伟平[1] 李家春[1] 齐洪亮[1] 尹超[1] 

机构地区：[1]长安大学特殊地区公路工程教育部重点实验室,陕西西安710064

出　　处：《灾害学》2016年第2期24-29,共6页Journal of Catastrophology

基　　金：西部交通建设科技项目(200631800007);中交股份科技研发项目(2011-ZJKJ-04);中央高校基本科研业务费资助项目(自然科学类)(310821161014)

摘　　要：为公路泥石流灾害的防治与管理提供宏观层面的参考,针对中国公路泥石流灾害进行了危险性分区研究。从地形地貌、水源条件、物源条件及植被条件4方面分析了致灾因素,结合致灾因素影响程度,选取了相应评价指标并分级与评分;采用致灾因素叠加法建立了灾害危险性评价模型;利用Arc GIS10.0软件计算绘制了各评价指标分级图件、《中国公路泥石流灾害危险度图》,并以危险度为分区指标,编制了《中国公路泥石流灾害危险性分区图》,将全国划分为极严重危险、严重危险、中等危险、低危险4个等级区,危险性分区结果与公路泥石流灾害实际分布特征相符合。In order to provide macro-level reference for prevention and management of highway debris flow disasters,risk regionalization of highway debris flow disasters was studied. The causal factors of disasters are analyzed from topography condition,water condition,material sources and vegetation condition. In line with disaster effects,the assessment indicator system is selected and each indicator is rated and scored. Risk assessment model of highway debris flow disaster is established adopting the causal factors superposition principle. Each assessment indicator classification map and Risk Figure of Highway Debris Flow Disasters in China are calculated and plotted by GIS,and in view of risk degree,Risk Regionalization Figure of Highway Debris Flow Disasters in China is drew. The highway debris flow disasters in China is rated into four risk levels including extremely high risk area,high risk area,medium risk area and low risk area. The result of risk regionalization was in line with the distribution feature of highway debris flow disasters in China.

关 键 词：公路工程 泥石流灾害 致灾因素 危险性评价 GIS 危险性分区 

分 类 号：X43[环境科学与工程—灾害防治] U416.02[交通运输工程—道路与铁道工程]