大管棚预注浆超前支护技术在风霜岭隧道洞口施工中的应用

Application of anticipated Protection by Pre grounted Big Tube Canopy in Fengshuangling Tunel

阐述了风霜岭隧道右洞进口堆积体段超前大管棚的施工,通过对监控量测结果进行分析,总结了超前预支护技术在通过软弱围岩时的作用。

The paper elaborating the construction of pre-grouorted tube canopy in the congeries segments of Fengshuanglong tunned, analyies the monitored results,and sums up the function of articopated proteetion in penetrating the weak rocks.