马岭头左隧道光面爆破设计与施工

On the Design and Construction in Blast for Smooth Surface at the Left Tunnel of Malingtou

根据公路隧道"新奥法"施工的需要,通过光面爆破试验,得出各种围岩的科学合理的光面爆破设计参数,形成了公路隧道开挖的光面爆破方案,提出了光面爆破的施工工序。控制欠超挖,确保初期支护和二衬厚度,降低工程成本,取得良好的效果。

According to the requirements for road and tunnel construction of 'Xin Ao fa',with the experiments of blast for smooth surface, we have gained lots of scientific and reasonable parameters on the design and construction, formed the scheme in road and tunnel construction, raised the constructional working procedure. And we have also obtained sound effects in controlling under super-excavate, ensuring the thickness of the first and the second supporting and reducing costs of the engineering project.\;