富水深埋裂隙地层盾构辅助气压模式掘进关键技术研究  

Research on Key Technologies for Shield Tunneling with Auxiliary Air Pressure Mode in Water-Rich Deep Buried Fractured Stratum

作　　者：李世佳 詹纯 LI Shijia;ZHAN Chun(Guangzhou Metro Engineering Consulting Co.,Ltd.,Guangzhou 510010,China)

机构地区：[1]广州地铁工程咨询有限公司,广州510010

出　　处：《广东土木与建筑》2024年第12期95-98,共4页Guangdong Architecture Civil Engineering

摘　　要：研究针对富水深埋裂隙地层中盾构掘进的挑战,探索了从传统土压平衡模式向辅助气压掘进模式的转变。通过在深圳地铁10号线的实际施工中,采用了盾构机洞内超前注浆加固和衡盾泥填仓加固法等方法,明确了关键控制指标,包括渣土改良、气压控制、土仓压力和掘进速度。结果表明,辅助气压模式有效降低了盾构机负荷,减少了刀具磨损,并成功控制了地表沉降,确保了施工安全。这些研究成果为类似地质条件下的盾构施工提供了重要的技术指导和实践经验。The research addresses the challenges of shield tunneling in water-rich,deeply buried fractured strata and explores the transition from traditional earth pressure balanced methods to assisted air pressure tunneling approaches.During the actual construction of the Shenzhen Metro Line 10,techniques such as advanced grouting reinforcement and shield mud filling reinforcement were utilized.Key control indicators were established,including waste soil improvement,air pressure control,soil chamber pressure,and tunneling speed.Results indicate that the assisted air pressure method effectively reduced the load on the tunnel boring machine,minimized cutter wear,and successfully controlled surface settlement,ensuring construction safety.These findings provide important technical guidance and practical experience for shield tunneling under similar geological conditions.

关 键 词：富水裂隙地层 辅助气压模式 下穿运营铁路 

分 类 号：U455.43[建筑科学—桥梁与隧道工程]