乌鞘岭隧道岭脊段控制千枚岩大变形快速施工

Rapid Tunnel Construction Technology to Control Huge Deformation of Phyllite Ground: Case Study on Ridge Section of Wushaoling Tunnel

针对乌鞘岭隧道岭脊段高地应力千枚岩大变形,通过对施工方案不断优化,对施工工艺不断改进,并制定各工序标准耗时,同时进行严格的施工组织管理,得到了在高地应力条件下能较好控制软岩(千枚岩)大变形的一整套快速施工技术。着重介绍了乌鞘岭隧道岭脊段控制千枚岩大变形的快速施工指导思想、施工方法、施工工序、各工序标准耗时及各工序间距控制标准。

In order to cope with the huge deformation of the highly-stressed phyllite ground in the ridge section of Wushaoling tunnel, the construction program is constantly optimized, the construction technology is persistently improved, standard time duration is determined for each construction step and strict construction organization management is performed. In this way, a complete set of rapid construction technology is established, by means of which the huge deformation of the soft phyllite ground under high stress conditions can be effectively controlled. The guiding principles, construction methods, construction steps, standard time duration of each construction step and standard distances between various construction steps taken for the rapid construction of the ridge section of Wushaoling tunnel to control the huge deformation of the phyllite ground are presented in the paper.