石板沟隧道洞口边仰坡及Ⅱ类围岩浅埋段施工

The construction of side upward slope of the cavity opening of Shibangou tunnel and the fender shallow burying section

结合石板沟隧道工程概况,详细介绍了暗挖施工的工艺流程及其关键工序,提出了先支护、后开挖、短进尺、快封闭、勤测量的施工原则,指出该方案技术成熟、工艺先进、安全系数高、工程质量、安全易保证。

Combined with the general situation of Shibangou tunnel project, it introduces the technological progress of underground excavation construction and the key progress, puts forward the construction of supporting, excavation, short inlet size, speedy seal, and diligent measuring, and points out that the technique of the program is mature, the technology is advanced, the safety coefficient is high, the project quality and safety is easy to assure