黄土质隧道洞口开挖支护技术分析

Analysis of excavation and support technology for the mouth of loess tunnel

介绍了黄土质的类型及特点,分析了在湿陷性黄土上进行隧道开挖的难点和要点,探讨了黄土质隧道中超前大管棚、锚杆、钢架、喷射混凝土等支护技术的要点,希望能为隧道施工人员提供借鉴。

Introduces the types and characteristics of loess quality,analyzes the difficulties and main points of tunnel excavation on collapsible loess,introduces the key points of the supporting technology such as the super front pipe shed,bolt,steel frame and shotcrete in the loess tunnel,hoping to provide reference for the tunnel construction personnel.