大直径盾构姿态上漂原因分析及防范措施

Cause Analysis and Preventive Measures for Upward Drift of Large Diameter Shield

以成都轨道交通18号线工程土建4标兴隆站~天府新站盾构区间大直径盾构泥岩地层施工为例,通过研究盾构推进过程中盾构姿态上漂的关键因素、解决方案及预防措施,为盾构姿态控制提供了理论依据,对保证盾构掘进姿态可控、高效施工具有一定的指导意义。

aking the construction of large diameter shield mudstone stratum between Xinglong Station and Tianfu New Station of Bid 4 of Chengdu Metro Line 18 as an example,this paper studies the key factors,solutions and preventive measures for shield upward drift in the process of shield tunneling,which provides theoretical basis for shield posture control,and has certain guiding significance for ensuring shield tunneling posture control and construction efficiency.