探测横洞密贴下穿既有地铁车站施工技术  

CONSTRUCTION TECHNOLOGY OF DETECTING TUNNEL UNDER A EXISTING SUBWAY STATION

作　　者：颜妮 YAN Ni(China Railway 18th Bureau Group Municipal Engineering Co.,Ltd.,300000,Tianjin,China)

机构地区：[1]中铁十八局集团市政工程有限公司,天津300000

出　　处：《建筑技术》2022年第12期1700-1702,共3页Architecture Technology

摘　　要：北京地铁19号线牛街站-金融街站区间连续穿越地铁二号线与国铁直径线,设置探测横洞实现穿越前检修、超前探测及站底土体加固。探测横洞修建中解决了密贴穿越既有结构、近接施工各类市政管线以及通道变断面施工等难题,形成了小断面留核心土开挖、粉细砂层连续性坍塌处理、探测导洞加固等多项施工技术,保证了既有结构型钢探测及处理工作的有效推进,提前规避风险。The section between Niujie station and Financial Street Station of Beijing Metro Line 19 continuously passes through Subway Line 2 and Diameter line of China Railway. The detection transverse hole is set to realize the maintenance, advance detection and soil reinforcement at the bottom of the station before crossing. Detection in horizontal hole built solves the thick stick across both structures, nearly all kinds of municipal pipeline construction and channel variable cross section construction, formed a small section to keep core soil excavation, silty sand layer continuous collapse treatment, detect the pilot tunnel reinforcement and so on many construction technology, ensure the existing structural steel detection and processing of effective efforts to promote and avoid risk in advance.

关 键 词：探测横洞 近接施工 地铁车站 注浆技术 导洞加固 

分 类 号：TU231[建筑科学—建筑设计及理论]