超前地质预报技术在向莆铁路青云山特长隧道施工中的应用研究

摘要

青云山特长隧道采用以综合地质编录、素描为基础、并结合多种钻探的预报方法,形成了“长短结合、点面结合、定性分析与定量实测相结合”的施工地质超前预报技术,提高了隧道穿越复杂地段的断层带、挤压破碎带、涌水带等不良地质体的超前预报效果,较好地修正了勘察设计阶段的地质资料,有效地控制了施工安全风险,优化了相应的工程措施,为同类工程施工积累了经验.%The geological forecast method-which integrates geological recording, mapping and various explorations, and combines long and short measuring, qualitative analysis and quantitative data collection-was applied to the Qinyunshang Tunnel. The forecast accuracy was improved regarding tunnel crossing of a complex fault, squeeze fractures and the unfavorable geological condition of water inflow. This method allows for corrections of the geological documents from the survey and design phases, effectively controls construction risks and optimizes the corresponding construction measures.