超大断面四联拱隧道施工技术研究

连拱隧道在施工的过程中跨度十分大,同时多次开挖也扰动土体,这些问题都造成地表沉降同时也为我们的安全施工造成较大的隐患。文章以某地四联拱隧道的施工作为研究对象,对超大断面的四联拱隧道双侧壁加中导洞法的施工方案进行研究,主要阐述了这种施工方法的原理跟特点以及施工步骤、关键技术这些内容,这样对有相同问题的隧道施工提供借鉴。

The multi-arch tunnel in the construction process span is very large, and meanwhile many times of excavation has also disturbed the soil. These problems all cause the ground surface settlement and a bigger hidden danger for our safe construction. This paper takes the construction of the four-arch tunnel in a certain place as the research subject, and the principle and character-istics of this construction method and its construction steps are mainly discussed in the study of the construction scheme of the dou-ble-side-wall plus mid-guide tunnel with super-large section of the four-arch tunnel. These key technologies can be used as a refer-ence for tunnel construction with the same problems.