长沙市地铁5号线湘木区间盾构施工中的二次注浆技术  

Secondary grouting technology of shield construction for Xiangmu district of Changsha metro line 5

作　　者：曹振兴 彭学军 蒋瑾 凌涛 汤宇 Cao Zhenxing;Peng Xuejun;Jiang Jin;Ling Tao;Tang Yu(The First Engineering Co Ltd, China Railway Wuju Group, Changsha 410117, China;School of Resource Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan 411201, China)

机构地区：[1]中铁五局集团第一工程有限责任公司,湖南长沙410117 [2]湖南科技大学资源环境与安全工程学院,湖南湘潭411201

出　　处：《湖南文理学院学报（自然科学版）》2019年第4期50-52,共3页Journal of Hunan University of Arts and Science(Science and Technology)

基　　金：国家自然科学基金资助项目(51804113);湖南科技大学博士启动基金资助项目(E51768);湖南科技大学博士后科研基金资助项目(E61610);南方煤矿瓦斯与顶板灾害预防控制安全生产重点实验室开放基金资助项目(E21734)

摘　　要：长沙市轨道交通5号线湘木区间的盾构区间构筑物较为密集,且区段地质多为粉砂层,为了有效控制施工引起的地表沉降问题,在盾构同步注浆后仍需进行二次注浆施工.本文从二次注浆材料、注浆压力、注浆量等方面,对二次注浆工艺技术进行了阐述,对其它类似工程有一定的参考价值.The Xiangmu section of Changsha Rail Transit Line 5 is dense with buildings, and the section geology is mostly silt layer. In order to effectively control the surface settlement caused by construction, the secondary grouting is carried out after synchronous grouting of the shield. The secondary grouting technology is expounded from the aspects of secondary grouting material, grouting pressure and grouting amount. The secondary grouting technology has great reference value for similar projects in the future.

关 键 词：盾构施工 控制沉降 二次注浆 施工工艺 

分 类 号：U455[建筑科学—桥梁与隧道工程]