掌鸠河引水供水工程TBM施工段相关工程地质问题探讨

Discussion on some problems concerning engineering geology in the TBM excavation of Zhangjiuhe River Water Diversion and Supply Project

文章介绍了上公山隧洞TBM掘进过程中遇到的断层破碎带、节理密集带、软岩大变形、岩溶、地下水等主要工程地质问题,并详细地论述了相应的工程处理措施;同时指出,虽然TBM对于不良地质条件适应性较差,但只要给予足够的重视,借鉴以往TBM施工中取得的经验与教训,并针对不同的工程地质条件,分别采取相应的处理措施,TBM是可以安全、快速地通过不良地质地段的。

This paper introduces some engineering geological problems met with in the TBM excavation of Shanggongshan tunnel, such as fault-fractured zones, joint-concentrated zones, large deformations of soft rocks, karst and groundwater etc. and discusses corresponding countermeasures in detail. At the same time, it points out that although TBM has less applicability for unfavorable engineering geological conditions, yet if we attach enough importance to them, make use of experience and lessons in TBM construction and adopt corresponding countermeasures for different geological conditions respectively, then TBM can pass through unfavorable geological sections safely and quickly.