沈阳市排水防涝工程和平大街雨水干线工程盾构专项施工方案北京市市政四建设工程有限责任公司2018年2月目录一、工程概况..............................................................11.1编制说明...........................................................101.2工程平面位置.......................................................11.3工程水文地质情况..................................................21.4工程特点、重点....................................................4二、工程目标..............................................................42.1盾构过江标段工期安排...............................................42.2质量目标..........................................................42.3安全文明施工目标...................................................5三、施工平面布置..........................................................63．1现场施工道路.....................................................73.2现场供水系统......................................................73.3现场排水系统......................................................73.4临时供电系统......................................................83.5拌浆系统..........................................................83.6集土坑............................................................83.7水平运输及垂直运输................................................83.8管片堆放及粘贴防水材料场地........................................83.9通风系统..........................................................93.10水冷却循环系统布置................................................93.11上下通道布置......................................................9四、工程量一览表..........................................................9五、关键工序和特殊过程...................................................105.1施工测量控制要点.................................................105.2管片拼装控制要点..................................................105.3衬砌防水控制要点..................................................115.4地表沉降控制要点..................................................12六、施工工艺和施工方法...................................................136.1施工工艺流程......................................................136.2盾构进出洞土体加固方案............................................136.3始发方案..........................................................156.4接收方案..........................................................166.4.1贯通前测量及盾构姿态调整........................................166.4.2盾构到达掘进参数控制............................................176.4.3末环管片的安装..................................................176.4.4洞口衬砌拉紧装置...............................................186.4.5盾构机刀盘前端接触围护桩........................................186.4.6隧道管片背后注浆................................................186.4.7盾体外部聚氨酯止水..............................................186.4.8洞门凿除.......................................................196.5盾构机初始掘进(100环试掘进)......................................216.6盾构正式掘进施工.................................................246.7管片拼装..........................................................256.8同步注浆及衬砌壁后补压浆..........................................266.9盾尾油脂的加注....................................................286.10纠偏.......................
