不良地质条件下隧道洞身开挖施工关键技术  

Key Technology of Tunnel Shaft Excavation Under Bad Geological Conditions

作　　者：韩丛 HAN Cong(China Railway 22nd Bureau Group Municipal Engineering Co.Ltd.,Guangzhou 510800,China)

机构地区：[1]中铁二十二局集团市政工程有限公司,广州510800

出　　处：《工程建设与设计》2024年第2期108-110,共3页Construction & Design for Engineering

摘　　要：以玉磨铁路南联山隧道为例,描述病害类型,分析成因并采取临时处治措施,重点提出不良地质条件下隧道洞身施工技术要点,涉及开挖工法的选择、开挖进尺的控制、支护结构的设计等,对原方案加以优化,经过全面的设计和规范的施工后,可有效防止隧道围岩变形,在安全的环境中顺利完成隧道洞身开挖作业,采取的洞身开挖技术具有可行性。Taking Nanlianshan Tunnel of Yumo Railway as an example,this paper describes the types of diseases,analyzes the causes and temporary treatmentmeasures,and puts forward key technical points of tunnel construction under unfavorable geological conditions,including the selection of excavationmethod,the control of excavation penetration and the setting of supporting structure.The original plan is optimized,and the deformation of tunnel surrounding rock can be effectively prevented after comprehensive design and standardized construction.It is feasible to complete the tunnel shaft excavation in a safe environment.

关 键 词：隧道工程 洞身开挖 不良地质条件 关键技术 方案优化 

分 类 号：U455[建筑科学—桥梁与隧道工程]