摘要
敞开式TBM适合硬岩掘进,其在软弱围岩中掘进时易出现坍塌、变形、撑靴反力不足等问题,结合兰渝铁路西秦岭特长隧道工程的实际施工条件,探讨软弱围岩地段对TBM选型的技术要求,使其适应所在施工段的地质条件,以实现安全、快速施工的目的.
Generally open TBM is suitable for hard-rock excavation.Collapse,deformation and hang boots insufficient supports easily occur in weak surrounding rock.This paper is based on Lanzhou-Chongqing railway west Qin-ling extra-long tunnel proj ect and introduces the selection of TBM construction requirements for surrounding rock,to adapt the Geological conditions of the construction section,in order to achieve safe,rapid construction purposes.
出处
《兰州交通大学学报》
CAS
2014年第1期1-4,共4页
Journal of Lanzhou Jiaotong University
关键词
敞开式TBM
软弱围岩
技术要求
open TBM
soft and weak surrounding rock
selection requirements
