川藏铁路然乌—通麦段冰水泥石流危险性评价

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• 英文论文题名：Hazard Assessment of Gaciofluvial Debris Flows along Ranwu-Tongmai Segmentof Sichuan-Tibet Railway
• 论文作者：张广泽 ; 蒋良文 ; 陈兴长 ; 游勇 ; 柳金峰
• 英文论文作者：Zhang Guangze ; Jiang Liangwen ; Chen Xingchang ; You Yong ; Liu Jinfeng ; China Railway Eryuan Engineering Group CO.LTD ; School of Environment and Resources ; Southwest Univ.of Sci.and Technol ; Inst ; of Mountain Hazards and Environment ; Chinese Academy of Sci
• 年：2016
• 作者机构：中铁二院工程集团有限责任公司;西南科技大学环境与资源学院;中国科学院成都山地灾害与环境研究所;
• 论文关键词：冰川 ; 冰湖 ; 泥石流 ; 危险性评价 ; 熵权法 ; 帕隆藏布
• 英文论文关键词：glaciers ; glacier lakes ; debris flows ; hazard assessment ; the entropy weight method ; Polongzangbu basin
• 会议召开时间：2016-10-14
• 会议录名称：“川藏铁路建设的挑战与对策”2016学术交流会论文集
• 语种：中文
• 分类号：P642.23;U212.22
• 学会代码：ZGTD
• 会议名称：“川藏铁路建设的挑战与对策”2016学术交流会
• 会议地点：中国四川成都
• 主办单位：中国铁道学会、中国铁道学会工程分会、中国中铁股份有限公司、中铁二院工程集团有限责任公司
• 学会名称：中国铁道学会
• 页数：10
• 文件大小：2152k
• 原文格式：O
• 会议级别：全国

摘要

通过对川藏铁路然乌—通麦段泥石流形成环境背景与泥石流分布的关系分析,确定了冰水泥石流危险性评价的流域特征和冰川冰湖特征两大类指标。根据各类指标对泥石流作用方式不同,分别采用不同方法对其进行量化;采用熵权法确定各指标的权重,并基于"多因子叠加法"构建冰水泥石流危险性评价模型。评价结果显示,高度危险的冰水泥石流沟13条,中度危险的41条,低度危险的37条。其中,24‰走线方案穿越低度危险泥石流沟17条,中度危险22条,高度危险9条;30‰方案穿越低度危险泥石流沟20条,中度危险27条,高度危险5条。建议拟建铁路尽量绕避高度危险的冰水泥石流沟。
Two kinds of assessment indexes of gaciofluvial debris flows,namely features of debris flow catchments and glacial lakes,were determined based on analysis of the relationship between formation backgrounds and distribution of debris flows.The two kinds of indexes were quantified using different methods,respectively,because they had different influences on the formation of gaciofluvial debris flows.Then the weight of each index was determined by the entropy weight method.And then the debris flow hazard assessment model was constructed based on multiple factors superposition method using the weights and the gaciofluvial debris flow hazards were assessed.Assessment results show that there are 13 high-risk debris flows,41 mediumrisk debris flows and 37 low-risk debris flows in the study area.The 24‰-line will go through 9 high-risk debris flows,22 medium-risk debris flows and 17 low-risk debris flows.The 30‰-line will go through S high-risk debris flows,27 medium-risk debris flows and 20low-risk debris flows.It was suggested that the proposed railway should avoid high-risk gaciofluvial debris flows.

引文

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