管棚和小导管在软弱围岩洞口段施工的运用

The Application of Pipe Shed and Small Pipe in the Portal Section Construction of Weak Surrounding Rock

基于常吉高速公路的雀儿溪隧道的施工实践,总结了隧道管棚、小导管施工注意事项及采取的工程措施。

Based on the construction practice of Que＇erxi Tunnel of Changji Expressway, this paper sums up the key points needing attention and the measures that should be adopted in the construction of tunnel pipe shed and small pipe.