摘要
研究目的:川藏铁路途经的冈底斯-念青唐古拉山活动陆缘带与喜马拉雅褶皱带北部交界区,是铁路之前从未从事过建设的区域,面临缝合带内动力作用效应,冰湖溃决、冰川泥石流等特殊环境地质问题。因此需开展对川藏铁路沿线特殊环境地质问题的研究,为川藏铁路的成功修建和安全运营提供科技支撑。研究结论:(1)川藏铁路穿越三大缝合带地区,影响最大的是雅鲁藏布江蛇绿岩缝合带,需重视发生在喜马拉雅弧上的大地震对川藏铁路的影响,并建议利用先行工程开展缝合带地应力、地温测量等科研课题;(2)对海洋型冰川覆盖区的冰湖溃决、冰川泥石流等问题,应加强形成机理、运动特征等基础理论的研究,还需研究沿河线走高线位绕避沟谷灾害链等减灾选线策略。
Research purposes： To propose the cognition about the special Geo -environmental problems along the Sichuan -Tibet Railway and the concise key points of tackle hard -nut problems in science and technology. To provide the science and technology support for the successful building and safe operation of the Sichuan - Tibet Railway. Research conclusions：The junctional zone of Gangdise - Nyenchen Tanglha active continential margin and northern Himalayan fold belt, is a region in which has never been built any railways before, facing the specific Geo - environmental problems such as, inner dynamic effect of the Yarlung Zangbo suture zone, glacier lake outburst in the maritime glacier zones and glacial debris flow, etc. The Sichuan- Tibet Railway passes through three major suture zones, including the Yarlung Zangbo suture zone, so we need to pay attention to influence on the Sichuan -Tibet Railway affected by the big earthquakes occurred on the Himalayan arc, and suggest carrying out the study on crustal stress, measuring ground temperature with the antecedent project. To the problems of glacier lake outburst in the maritime glacier zones and glacial debris flow, study on the basic theory of formation mechanism, motion feature should be enhanced, and the strategy of higher elevation design to avoid the damage of valley disaster chain should be studied as well.
作者
许佑顶
姚令侃
XU You - ding YAO Ling - kan(China Railway Eryuan Engineering Group Co. Ltd, Chengdu, Sichuan 610031, China Southwest Jiaotong University, Chengdu, Siehuan 610031, China)
出处
《铁道工程学报》
EI
北大核心
2017年第1期1-5,59,共6页
Journal of Railway Engineering Society
基金
国家重点研发计划-区域综合交通基础设施安全保障技术项目(2016YFC0802206)
国家自然科学基金项目(41571004)
中国铁路总公司科技研究开发计划课题(2015G002-N)
关键词
川藏铁路
缝合带
内动力
冰湖溃决
冰川泥石流
Sichuan - Tibet Railway
suture zone
inner dynamic
glacier lake outburst
glacial debris flow
作者简介
许佑顶，1964年出生，男，教授级高级工程师，现任中铁二院工程集团有限责任公司副总经理、总工程师；姚令侃，1953年出生，男，教授。
