川藏铁路帕隆藏布峡谷地质灾害特征及地质选线

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• 英文论文题名：Geological Hazard Characteristics of Parlung Zangbo Canyon and Geological Alignment of the Sichuan-Tibet Railway
• 论文作者：宋章 ; 张广泽 ; 蒋良文 ; 游勇
• 英文论文作者：Song Zhang ; Zhang Guangze ; Jiang Liangwen ; You Yong ; China Railway Eryuan Engineering Group Co.Ltd ; Institute of Mountain Hazards and Environment ; Chinese Academy of Sciences
• 年：2016
• 作者机构：中铁二院工程集团有限责任公司;中国科学院成都山地灾害与环境研究所;
• 论文关键词：川藏铁路 ; 帕隆藏布 ; 内外动力 ; 地质灾害 ; 地质选线
• 英文论文关键词：Sichuan-Tibet railway ; Parlung Zangbo ; internal and external power ; geological hazard ; geological alignment
• 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：U212.32
• 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：9
• 文件大小：2009k
• 原文格式：O
• 会议级别：全国

摘要

拟建川藏铁路穿越帕隆藏布峡谷,因其复杂活跃的新构造运动、显著的地势高差特性、急剧的气候差异性、复杂多变的地层岩性及复杂的水文地质环境等影响,流域内崩滑泥石流、水毁、雪崩及岩屑坡等表生地质灾害极其发育。本文通过资料收集、遥感解译及现场地质勘测等工作和手段,在分析了沿线地质灾害分布特征及其成因机制的基础上,从工程地质的角度研究了流域内选线原则。主要结语如下:①帕隆藏布因其强烈的新构造运动及频繁的地震为内动力因素和重力卸荷、寒冻风化、降水、侵蚀冲刷、冰蚀及人类活动等为外动力因素的相互作用为流域内地质灾害发育的成因机制;②避开发育于帕隆藏布南岸的嘉黎至然乌区域性深大断裂,流域内应在内外动力地质灾害均有所减轻的北岸进行工程地质选线;③鉴于流域内地质灾害分布特征及其成因机制,应遵循重隧道轻路基、定车站选桥位的工程地质选线思路;④本文的研究结语对此流域内公路、铁路等工程地质选线具有指导意义。
The proposed Sichuan-Tibet railway run through the Parlung Zangbo canyon,because of the typical engineering geological background for the proposed Sichuan-Tibet railway such as the features of the intricate and active neotectonics characteristics,higher height differences geomorphology,frequent and forceful seismic properties,cold and atrocious climate features,and multifarious formation lithologic properties,the mountain disasters,such as the large scale landslide and avalanche,rockfall,debris flow,washout,snow avalanche,debris slope,etc.,which are extremely well-developed.Based on the method and means of collection data,remote sensing and investigation,analyzed the geological disasters characteristics and formation mechanism which distributed along the proposed railway,the paper researched the geological alignment fundamental of the proposed Sichuan-Tibet railway in a geology perspective.Research conclusions as follows:①The formation mechanism of geological disasters developed Extremely in Parlung Zangbo canyon are the result of internal and external power interaction,such as the internal power of intricate and active neotectonics,frequent and forceful seismic,and the external power of gravity unloading,frost weathering,rainfall,erosion,glacial erosion and human activity,etc.②The better engineering geological alignment scheme of the Sichuan-Tibet railway in this area should run through the north of Parlung Zangbo canyon with light internal and external power geological disasters,and avoid of the regional Jiali-Ranwu active fault located in the south of Parlung Zangbo canyon.③Based on the distributed characteristics and formation mechanism of geological disasters,the engineering geological alignment standard of weighing tunnel lighting subgrade,selecting station and bridge should be adopted in the Parlung Zangbo canyon.④The conclusions of this paper have guiding significance in the geological alignment for railway,expressway engineering etc.in this area.

引文

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