隧道过富水断层破碎带超前帷幕注浆加固技术研究  

Research on Over-the-top Curtain Grouting Reinforcement Technology for Tunnels Passing Through Water-rich Fault Fracture Zones

作　　者：张振北 高鹏[1,3] Zhang Zhenbei;Gao Peng(CCCC First Highway Consultans Co.,Ltd.,Xi’an 710065,China;Xi’an Fangzhou Engineering Consulting Co.,Ltd.,Xi’an 710065,China;CCCC Rui Tong Bridge Maintenance Technology Co.,Ltd.,Xi’an 710065,China)

机构地区：[1]中交第一公路勘察设计研究院有限公司,西安710065 [2]西安方舟工程咨询有限责任公司,西安710065 [3]中交瑞通路桥养护科技有限公司,西安710065

出　　处：《黑龙江科学》2024年第2期97-99,共3页Heilongjiang Science

摘　　要：超前帷幕注浆加固法是令隧道安全快速通过富水断层破碎带的一种有效方法,以某隧道过富水断层破碎带为研究对象,采用FLAC3D数值模拟软件分析了不同注浆圈渗透性与注浆圈厚度对隧道围岩稳定性的影响,确定了最优注浆圈渗透系数比n值50和注浆圈厚度4.5 m,为隧道安全快速穿越富水断层破碎带提供数据支持。The super-advance curtain grouting reinforcement method is an effective method for safe and rapid passage of the tunnel through the water-rich fault fracture zone.Through taking the Polygonum sub-tunnel over the water-rich fault fracture zone as the research object,the study conducts FLAC3D numerical simulation software,analyzes the effect of different grouting circle permeability and grouting circle thickness on the stability of the tunnel surrounding rock,and determines 50 as the optimal grouting circle permeability coefficient ratio n value and 4.5m as grouting circle thickness,which provides data support for safe and fast tunnel crossing of water-rich fault fracture zone.

关 键 词：注浆加固 富水断层 注浆圈渗透性 注浆圈厚度 

分 类 号：U455.4[建筑科学—桥梁与隧道工程]