软弱围岩隧道开挖及支护施工技术探究

在隧道工程施工中,经常会遇到一些软弱围岩地段。应结合地质勘察信息,设计施工方案,帮助现场施工人员掌握开挖及支护的技术要点。文章以某隧道工程为例,首先介绍了开挖施工形式、断面作业方法;随后简要概述了喷射混凝土支护、锚杆支护等隧道支护方式的施工方法;最后结合个人经验,就软弱围岩隧道开挖及支护施工中需要重点关注的事项进行了总结。

In tunnel construction,some weak surrounding rock areas are often encountered.According to that key technical points of geological survey information,design construction plan,helping the site construction personnel master the technical key points of excavation and support,this paper takes a tunnel project as an example and introduces the excavation construction form and section operation method.Then,the construction methods of shotcrete support,bolt support and other tunnel support methods are briefly summarized.Finally,based on personal experience,this paper summarizes the key issues that need to be paid attention to in the excavation and support construction of soft surrounding rock tunnel.