武汉大东湖排水深隧长距离双孔曲线顶管施工  

Construction of Long Distance Double-hole Curved Pipe Jacking in Wuhan Dadong Lake Deep Drainage Tunnel

作　　者：周学锋 李永峰 刘凡 陈雪华 周丽红 ZHOU Xue-feng;LI Yong-feng;LIU Fan;CHEN Xue-hua;ZHOU Li-hong(China Construction Third Engineering Bureau Installation Engineering Co.Ltd.,Wuhan 430064,China;GZ Jintu Geotechnical Engineering Co.Ltd.,Guangzhou 510610,China)

机构地区：[1]中建三局安装工程有限公司,湖北武汉430064 [2]广州金土岩土工程技术有限公司,广东广州510610

出　　处：《中国给水排水》2020年第20期51-57,共7页China Water & Wastewater

摘　　要：结合武汉市大东湖核心区污水传输系统支线顶管工程的实际施工经验,对超深及复合地层条件下长距离双孔曲线顶管顶进施工技术进行研究。针对小直径双F型钢筒混凝土管顶进难度大、单次顶进距离长、曲线复杂等难点,研究了顶管机选型及针对性设计、深覆土高水压下顶管始发接收、长距离复合地层曲线顶进减阻、导向及姿态调整、长距离顶管施工供电、管内通风与进排浆及小直径钢筒钢筋混凝土管节设计等技术。实际应用表明,该工程顶进施工顺利,效果良好。Combined with the practical construction experience of the branch line jacking project of the sewage transmission system in Wuhan Dadong Lake core area,the construction technology of long distance double-hole curve pipe jacking in deep tunnel is studied under the conditions of ultra-deep and composite formation.Aiming at the difficulties of jacking the double F type concrete cylinder pipe with small diameter,long distance for single jacking and the complicated curve,the technologies including pipe jacking machine selection and specific design,pipe jacking initiation receiving under deep soil and high water pressure,curved jacking drag reduction for long distance composite formation,guidance and attitude control,long distance pipe jacking power supply,ventilation and slurry discharge,as well as the design of small diameter steel cylinder reinforced concrete pipe joint were studied.The application results show that the jacking construction is smooth and the effect is good.

关 键 词：大东湖排水深隧 长距离顶管 双孔曲线 

分 类 号：TU992[建筑科学—市政工程]