复合式 TBM 脱困施工技术复合式 TBM 脱困施工技术 摘要:盾构或复合式 TBM 在城市地铁施工中占主导地位,其有很多优点如施工速度快、干扰较小、自动化程度高、开挖安全和衬砌同步等。但假如出现地层变形复合式 TBM 盾壳被卡死,不能进行推动,复合式 TBM 就失去了快速推动的优势。本文重点叙述针对本工程复合式 TBM 盾壳抱死处理措施,从刀盘土仓内爆破施工、盾壳上部爆破施工、地表房屋监测、支护、脱困推动等方面进行阐述,为以后的城市地铁施工盾壳被卡提供较有用的参考事例。 关键词:复合式 TBM;盾壳被卡;仓内爆破;房屋监测;脱困 Abstract: The shield or composite TBM dominated in city subway construction, it has many advantages such as fast construction speed, less interference, high degree of automation, excavation safety and lining synchronization. But if the stratum deformation of composite TBM shield was stuck there, not promote, composite TBM lost the advantage of rapid advance. This paper focuses on the engineering of composite TBM shield locking measures, is described from the cutter head chamber blasting, the blasting construction, shield shell surface building monitoring, support, from promoting aspects for future city, Metro construction shield is cards provide reference examples of practical. Keywords: composite TBM; shield card; chamber blasting; housing difficulty monitoring; 中图分类号:U445.4 献标识码:文章编号:2095-2104(2025)1-0020-02 1 工程概况 重庆轨道交通六号线二期复合式 TBM 试验段曹蔡区间线路长1776 双线延长米,管片 1184 环,1.5m/环,复合式 TBM 刀盘开挖直径 6.28m,管片厚度 30cm。右线采纳中铁 19 号复合式 TBM 掘进,左右线隧道线间距 13.1m,右线复合式 TBM 被卡时刀盘里程为YDK42+493.826,该处隧道埋深 11.5m,见图 1 复合式 TBM 位置平面位置。 2 工程地质 曹蔡区间线路主要穿越的地层为为砂质泥岩和砂岩,砂质泥岩主要由石英,云母,长石等组成,砂质泥岩为粉砂泥质结构,中厚层状构造,主要矿物成分为粘土质矿物,表层强风化带厚度 0.50~1.50m,强风化岩心呈...