复杂地质条件对隧道施工的影响及数值模拟  

Influence of Complex Geological Conditions on Tunnel Construction and Numerical Simulation

作　　者：刘捷 刘小军 王新 王林 LIU Jie;LIU Xiaojun;WANG Xin;WANG Lin(China Railway First Bureau Group Co.,Ltd.,Guangzhou Branch,Guangzhou Guangdong 510000,China)

机构地区：[1]中铁一局集团有限公司广州分公司,广东广州510000

出　　处：《交通节能与环保》2024年第S02期127-133,共7页Transport Energy Conservation & Environmental Protection

摘　　要：本研究针对柳梧铁路紫荆瑶山隧道复杂地质条件下的施工问题进行了深入分析与探讨。该隧道穿越了泥质粉砂岩、红黏土、断层带、缓斜层及粉砂岩等多种复杂地质区域,这些地质条件对施工的安全性、稳定性和效率提出了严峻挑战。为应对这些挑战,研究采用了有限元法(FEM)、离散元法(DEM)及有限差分法(FDM)等数值模拟技术,全面评估了不同地质条件下的围岩应力分布、变形模式及潜在失稳区域。模拟结果显示,各类地质条件下隧道围岩的应力集中区及变形特征显著不同,红黏土和断层带区域的施工风险尤其突出。基于模拟结果,研究提出了针对不同地质条件的施工优化技术和安全保障措施,为类似工程提供了科学依据与实践指导。未来隧道工程应进一步结合大数据分析与智能监测技术,提升施工安全性与效率。The construction problems of Zijingyaoshan Tunnel on Liuwu railway under complex geological conditions are deeply analyzed and discussed.The tunnel has passed through many complex geological areas such as argillaceous siltstone,red clay,fault zone,gently inclined bed and siltstone,which pose severe challenges to the safety,stability and efficiency of construction.In order to deal with these challenges,numerical simulation techniques such as finite element method(FEM),discrete element method(DEM)and finite difference method(FDM)are adopted,the stress distribution,deformation mode and potential instability region of surrounding rock under different geological conditions are comprehensively evaluated.The simulation results show that the stress concentration and deformation characteristics of the surrounding rock are significantly different under various geological conditions,especially in the red clay and fault zone.Based on the simulation results,construction optimization techniques and safety measures for different geological conditions are proposed,which provides scientific basis and practical guidance for similar projects.In the future,large data analysis and intelligent monitoring technology should be combined to improve the safety and efficiency of tunnel construction.

关 键 词：紫荆瑶山隧道 复杂地质条件 数值模拟 施工技术 安全保障措施 

分 类 号：U455[建筑科学—桥梁与隧道工程]