摘要
岩溶工程地质问题是我国西南岩溶地区隧道建设中常遇到的重大问题之一。论文针对西南山区高速铁路岩溶隧道的特殊地质条件,给出了隧道遇到岩溶时的治理原则及处置措施,并对该隧道的岩溶治理措施做了具体分析,对隧道顶部溶洞采用钢架和大管棚加固并利用吹填砂回填,边墙主要采用衬砌加固并加干砌片石治理措施,隧道基底主要采用混凝土回填与旋喷桩加固基底。处理结果表明:上述方法在隧道岩溶治理过程中具有安全、可靠等特点,可为今后在岩溶地区隧道设计及施工积累经验,保证隧道施工安全。
Karst engineering geology is one of the important problems often encountered in tunnel construction in karst area in southwest China.According to the special geological conditions of karst tunnel of high-speed railway in southwest mountainous area,this paper gives the treatment principle and disposal measures when the tunnel meets karst,and makes a concrete analysis of the karst treatment measures of the tunnel.Steel frame and large pipe shed are used to reinforce the karst cave at the top of the tunnel and backfill with blown sand.Lining and dry stone are used to reinforce the side walls.Concrete backfill and rotary jet grouting pile are used to reinforce the basement of the tunnel.The treatment results show that the above methods are safe and reliable in the process of tunnel karst treatment,which can accumulate experience for tunnel design and construction in karst areas in the future,and ensure the safety of tunnel construction.
作者
王唤龙
WANG Huan-long(China Railway Eryuan Engineering Group Co.Ltd.,Chengdu 610031,China)
出处
《工程建设与设计》
2021年第8期30-32,35,共4页
Construction & Design for Engineering
关键词
隧道
岩溶
治理措施
旋喷桩
tunnel
karst
treatment measure
jet grouting pile
