摘要
研究目的:既有成渝铁路线为新中国成立后修建的西南地区第一条铁路线,至今通车运营已60多年,鉴于当时国家的经济和技术力量不强等影响,铁路修建技术标准较低,且工程支防护措施极弱。受地层岩性、地质构造、强降水及人类活动等因素影响,沿线重力不良地质、水毁及隧道病害等地质灾害发育,影响行车安全及营运。本文在现场调绘的基础上,分析既有成渝铁路线沿线地质灾害特性及其成因机制,并探讨其防治对策,以期为工程服务。研究结论:(1)铁路沿线主要地质灾害有风化剥落、溜坍(滑坡)、危岩落石(崩落)及滚石等重力不良地质,基底软化、翻浆冒泥、排水沟及涵洞堵塞等水毁,以及渗水、拱顶及边坡剥落、开裂等隧道病害;(2)灾害产生和发展的成因机制可归纳为低建设技术标准、软弱的地层岩性、复杂的地质构造、丰沛的降水、活跃的地下水活动及人类活动等多因素的相互作用;(3)既有铁路地质灾害的整治应考虑对行车及安全的影响,工程防护措施应力求高效、简单实用;(4)本研究结论对既有成渝铁路线地质灾害的整治具有指导意义。
Research put-poses： The Chengdu - Chongqing railway, which is the first railway in the Southwest region after the founding of new China, has been opened to traffic more than 60 years. At the time, in view of the impact of the national economic and technological power, the construction technical standards are lower and the engineering support and prevention measures are weaker. Influenced by the factors such as the stratum lithology, geological structure, heavy rainfall, and human activities, the geological disasters such as the gravity unfavorable geology, washout and tunnel diseases develop, which impacted on the traffic safety and operation of railway. On the basis of survey, this paper analyzed the characteristics of geological disasters along the railway and its formation mechanism, and discussed the engineering prevention measures to serve the railway engineering. Research conclusions： （1） The geological disasters along the railway include the gravity unfavorable geology of weathering spalling, topsoil slip （landslide）, rockfall （avalanche） and boulder, the washout of basal softening, rising soil, blocked drain and culvert, the tunnel diseases of water percolation, spalling and cracking of the top and side of tunnel. （2） The formation mechanism of the emergence and development of geological disasters can be summarized as the interaction of various factors, such as the lower construction technical standards, soft and weak lithology, complex geological structure, abundant rainfall, active groundwater condition and human activities. （3） The governance of the geological disasters should consider the influence on the driving and safety of railway, and engineering support and prevention measures should be efficient, simple and practical. （4） The conclusion of this paper is of guiding significance for the governance of geological disasters along the Chengdu - Chongqing railway.
出处
《铁道工程学报》
EI
北大核心
2017年第8期16-21,共6页
Journal of Railway Engineering Society
基金
国家铁路局科技研究计划(KF2014-019)
中铁二院工程集团有限责任公司科研项目[院计划14126005(14-17)]
关键词
成渝铁路
地质灾害
成因机制
防治对策
Chengdu -Chongqing railway
geological disasters
formation mechanism
prevention measures
