大漂石高富水地层土压平衡盾构施工控制策略  

Control Strategy of EPB Shield Tunnel Construction in Saturated Cobble and Boulder Stratum

作　　者：赵旭伟[1,2] ZHAO Xuwei(China Railway Shanghai Design&Institute Group Co.,Ltd.,200070,Shanghai,China)

机构地区：[1]中铁上海设计院集团有限公司,上海200070 [2]西南交通大学交通隧道工程教育部重点实验室,成都610031

出　　处：《城市轨道交通研究》2021年第6期86-89,94,共5页Urban Mass Transit

摘　　要：对成都地铁4号线某区间隧道穿越大漂石高富水地层易出现的“卡”、“磨”、“塌”等典型施工问题进行了系统分析。结合现场测试数据,建议大漂石地层盾构施工采用动力配置较高的复合式盾构机,盾构施工过程每环超挖率控制在3.3%左右。Typical construction problems such as'stuck','erosion','subside'that easily appear in tunnel of Chengdu Metro Line 4 certain interval passing saturated cobble and boulder stratum are systematically analyzed.Based on field tests data,it is suggested to use the composite shield tunneling machine with high dynamic configuration and high power,and the ratio of over excavation shall be limited to approximately 3.3%.

关 键 词：地铁 卵漂石高富水地层 土压平衡盾构 施工控制 

分 类 号：U455.43[建筑科学—桥梁与隧道工程]