淤泥中砂层盾构施工管片上浮原因分析及控制处理技术  

Cause Analysis and Control Technology of Segment Floating in Shield Construction of Sand Layer in Silt

作　　者：李光山 LI Guang-shan(PowerChina Railway Construction Co.,Ltd.,Beijing 100044,China)

机构地区：[1]中国电建集团铁路建设有限公司,北京100044

出　　处：《价值工程》2020年第22期154-156,共3页Value Engineering

摘　　要：随着经济的发展,目前国内城市地铁施工越来越多,盾构法应用更为广泛,南北方各城市地质千变万化,盾构施工中问题更是各不相同又互有关联;盾构施工管片上浮是盾构施工较为常见又不好处理的技术难题,根据福州地铁五号线凤福区间盾构施工中遇到的管片上浮问题为例,主要通过对盾构机性能、同步注浆、二次注浆、盾构姿态、管片姿态、掘进参数、监控量测等方面分析研究,提出相关的控制措施,并在后续施工中得到了切实可行的效果,以此为同行作为借鉴。With the development of the economy,there are more and more subway constructions in the country at present,and the shield method is more widely used.The geology of the cities in the north and south is ever-changing and the problems in shield construction are also different and related to each other.The segment floating is a common technical problem that is difficult to deal with in shield construction.According to the example of the segment floating problem encountered in the shield construction of Fengfu section of Fuzhou Metro Line 5,this paper mainly analyzes the shield machine performance,synchronous grouting,secondary grouting,shield posture,segment posture,driving parameters,monitoring and measurement,and puts forward related control measures,which has obtained practical and feasible results in subsequent construction.

关 键 词：淤泥中砂 盾构施工 管片上浮 掘进参数 控制技术 

分 类 号：U455.2[建筑科学—桥梁与隧道工程]