采用大管棚超前支护技术处理青—莱高速公路毫山峪隧道塌方

Application of Large Pipe-shed Advanced Support in Treatment for Tunnel Collapse

摘要:

在青—莱高速公路毫山峪隧道塌方段施工中应用大管棚超前支护技术，施工管棚直径大，钻孔难度大。通过优选钻孔工艺、管棚参数和注浆工艺控制施工质量，大管棚支护施工取得了较好的效果。

Abstract:

Large pipe-shed advanced support technology was applied in construction of tunnel collapsing section of Haoshanyu with large pipe shed diameter and difficult drilling conditions. The engineering quality was controlled by optimum borehole drilling technology, pipe shed parameters design and grouting process with successful experience.