公路隧道洞口塌方治理技术应用实例

Cases of the Application of Collapse Control Technology at Highway Tunnel Entrance

公路隧道施工技术经过几十年的发展,已经比较成熟,但由于工程条件不同,施工中还是会遇到各种各样的问题,特别是洞口段的施工,更是工程开局的关键。以千金岭隧道洞口塌方治理为例,介绍了喷射混凝土、喷锚网、管棚钢支撑联合支护技术,总结了有关施工要点。

After decades of development, highway tunnel construction technology is relatively mature. However, due to different engineering conditions, there may be still various problems during construction, especially for the construction of the tunnel section, which is the key to the start of the project. Taking Qianjinling Tunnel entrance landslide as an example, the combined support technology of sprayed concrete, sprayed anchor net, and steel pipe support is introduced, and the relevant construction points are summarized.