渝利线岩溶地区选线设计浅析

本文根据渝利线4座岩溶隧道的选线实践,分析和归纳了渝利线在岩溶地区建设隧道存在的各种风险,并找出了控制风险的方法。在选线总体设计中坚持地质选线、环保选线原则,尽量规避和减小各种风险,系统性地提出了在此类地区具体、可操作的选线设计指导性原则,并成功应用此原则指导线路选线,在源头上将风险进行了有效控制,将渝利线控制性风险的等级降低至中低度。

Analysis of Technology Summary of Route Selection in Karst Area of Chongqing-Lichuan Railway

Taking four karst tunnels in Chongqing-Lichuan Railway as the route selection practice, this paper seriously analyses and sums up all kinds of risks that exist in building tunnels in karst area of Chongqing-Lichuan Railway and finds out the methods of controlling risks. In overall design of route selection, the principles of geological condition and environmental protection shall be adhered to and all kinds of risks shall be avoided and reduced as far as possible. An instructive principle with maneuverability for the route selection in this kind of region is systematically put forward , and it has been used successfully in the route selection and the risks are effectively controlled in source and the grade of control risks of Chongqing-Lichuan Railway has been reduced to mediunllow degree.