大直径盾构小半径曲线掘进施工工艺技术研究  

Study on Construction Techniques for Small Radius Curve Tunneling Using Large Diameter Shield

作　　者：兰俊涛 LAN Juntao(China Railway Tunnel Stock Co.,Ltd.,Zhengzhou 450001,Henan,China)

机构地区：[1]中铁隧道股份有限公司,河南郑州450001

出　　处：《建筑施工》2024年第10期1613-1617,共5页Building Construction

基　　金：广东珠三角城际轨道交通有限公司课题([2021]61号)。

摘　　要：以广州琶洲支线项目盾构500m小半径曲线施工为例,对大直径泥水盾构小半径曲线隧道施工中的大盾构针对性改造、掘进轴线控制、管片姿态控制、地表沉降控制等技术难题进行研究,通过同步双液注浆、保持合适的掘进姿态,并使用深层位移监测手段对盾构掘进影响进行研究,归纳整理出相应的解决措施,保证了盾构施工质量。Using the 500 m small radius curve construction of the Guangzhou Pazhou Branch Line Project as an example,technical challenges in constructing small radius curve tunnels with a large diameter slurry shield are investigated.The study focuses on the targeted modifications of large shields,control of the tunneling axis,control of segment posture,and control of surface subsidence.The impact of shield tunneling is analyzed through deep displacement monitoring,and corresponding solutions are summarized to ensure construction quality.

关 键 词：大直径泥水盾构 小半径曲线施工 盾构机改造 监控量测 

分 类 号：U445.43[建筑科学—桥梁与隧道工程]