摘要
Abstract
The shallow buried section of a tunnel inlet crosses weathered sand,fine gravel soil,and gravel soil layer,locally interspersed with soft pulverized clay and boulders.The surrounding rock exhibits poor self-stabilizing ability and insufficient local bearing capacity of the tunnel bottom.Introducing the dynamic treatment technology of reinforcing through the weak and complex strata,through the use of surface grouting reinforcement,adding the 2nd layer of extra-long pipe scaffolding outside the tunnel,optimizing the CRD method and other measures,and implementing the treatment technology of grouting around the periphery of the tunnel in the advance,and grouting and reinforcing of the steel pipe piles at the bottom of the tunnel,so as to ensure the safety of the construction and the safety of the structure.关键词
不良地质/沉降观测/工法优化/超前支护/注浆加固/变形控制/动态治理/安全性Key words
adverse geology/settlement observation/method optimization/advance support/grouting reinforcement/deformation control/dynamic management/safety分类
交通工程
