杜家山千枚岩地质公路隧道超欠挖效果控制

Overbreak Effect Control of Dujiashan Express Way in Phyllite Geological Condition

爆破作为隧道主体施工的第一道工序,对其他工序及其整个隧道工程的经济效益有着至关重要的影响。结合杜家山千枚岩隧道的实际施工情况,本着对超欠挖严格控制的基本原则,对隧道爆破方案进行分析。

Blasting as the first step of tunnel construction,is of great economic benefits for other step and the whole tunnel engineering.This paper,combining with Dugushan phyllite tunnel engineering,in consistency with the basic principles of strict overbreak control,makes research and discussion on the tunnel blasting scheme.