至界岭隧道层状围岩的施工体会

Construction Experience of Zhijielin Tunnel Crossing Layered Country Rock

该文介绍了至界岭隧道穿越层状围岩段,采用锚喷支护、辅以超前锚杆进行临时支护的方法。按照弱爆破、短进尺、早支护、勤量测的原则施工,获得成功,可供类似施工参考。

The article introduces Zhijielin Tunnel crossing the layered country rock section by the temporary supporting method of anchoring spray attached with the leading anchor rod. The tunnel is successfully constructed according to the principle of weak demolition, short tunneling, early supporting and frequent measuring able to provide the reference for the similar construction.