文章以上世纪70年代修建的平涉公路隧道加固工程为例,针对旧隧道没有围岩的具体情况,分析了隧道的主要病害,提出利用锚喷支护的加固方案,解决隧道的落石和渗水等病害。阐述了锚杆的计算和安装、钢筋网挂设、喷射混凝土、壁后注浆等施工工艺,并提出在实际施工中应注意的问题。 Taking the construction of flat road tunnel reinforcement project constructed in the 1970s as an example, this paper analyzes the main diseases of the tunnel in view of the fact that there is no surrounding rock in the old tunnel, and proposes the reinforcement scheme using anchor and shotcrete support to solve the tunnel falling and seepage Diseases. The construction technology of bolt calculation and installation, steel mesh hanging, shotcreting and grouting behind the wall are expounded, and the problems that should be paid attention to in actual construction are put forward.