炭质页岩深埋地层隧道施工技术

Construction Technique of Deep-buried Tunnel with Carbonaceous Shale

乌鞘岭特长隧道4号斜井左线正洞工区穿越多处深埋炭质页岩地层,该地层由于不同的地质构造及特性表现为不同的应力变形。经过对围岩地质构造与隧道稳定性的分析和此类围岩实际开挖支护的研究与探讨,以及结构加强适应性研究及施工方案选择,总结出了一套安全、快速通过此地层的应对方案及措施,积累了施工经验,为今后类似工程施工提供了科学依据。

The left line main tunnel work area of the NO. 4 incline shaft of the Wushaoling Super Long Tunnel crosses multiple-site deep-buried carbonaceous shale strata, and different stress -deformation properties are presented in this stratum due to different geological structure and characteristic. Methods and countermeasures of safely and quickly driving across the strata are summarized through analysis of the geological structure of wall-roekmass and the stability of the tunnel, study of actual excavation and support of wall-roekmass, research on structure adaptation and selection of construction plan, Therefore, construction experiences are accumulated, some scientific basis is also provided for similar engineering construction.