高寒山区铁路沟谷灾害链危险性评估与风险调控

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• 英文论文题名：Risk Evaluation and Control of Valley Hazards Chain for Railway in Alpine Region
• 论文作者：魏永幸 ; 姚令侃 ; 邱燕玲
• 英文论文作者：Wei Yongxing ; Yao Lingkan ; Qiu Yanling ; China Railway Eryuan Engineering Group Co.LTD ; School of Civil Engineering ; Southwest Jiaotong University
• 年：2016
• 作者机构：中铁二院工程集团有限责任公司;西南交通大学土木工程学院;
• 论文关键词：冰湖溃决 ; 溃决洪水 ; 冰川泥石流 ; 堵江 ; 危险性评估
• 英文论文关键词：glacial lake outburst ; outburst flood ; glacial debris flow ; blocking river ; risk evaluation
• 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：P694;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：14
• 文件大小：2236k
• 原文格式：O
• 会议级别：全国

摘要

冰湖溃决、冰川泥石流堵河是帕隆藏布流域高寒山区的沟谷灾害链,是川藏铁路不可回避的灾害风险。针对冰湖溃决、冰川泥石流堵河两类灾害,采用遥感解译和现场考察的方法,查明了两类灾害的分布;利用模糊综合评价法,选取冰湖面积等9个指标,综合评估冰湖溃决危险性;提出支沟溃决洪水入汇主河的流量、水深、流速的近似计算方法;建立了泥石流在主河中运移距离公式,综合其他影响因素,评价冰川泥石流堵河危险性;最后,根据冰湖溃决、冰川泥石流堵河影响范围,提出了线位高程约束条件。
Glacial lake outburst and glacial debris flow blocking river are valley hazards chain in alpine region of Palongzangbu Basin.They are unavoidable hazards for Sichuan-Tibet railway.For the two types of hazards,remote sensing interpretation and field investigation are used to ascertainthe distribution.By using Fuzzy Comprehensive Evaluation method,9 indicators such as lake area are selected to assess the risk of glacial lake outburst.Approximate calculation method of flow,water depth and flow rate are proposed for the outburst flood of tributary into mainstream.The formula of the migration distance of debris flow in the main river is established,and the other factors are combined to evaluate the risk of the glacial debris flow blocking river.Finally,according to the influence of glacial lake outburst and glacial debris flow blocking the river,line elevation constraints are put forward.

引文

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