漂管法用于套管内管道安装的工程分析  

Project Analysis of Pipe-floating Method Used for Installation of Pipe in Casing

作　　者：王彦祥[1,2] 何琴 颜炳魁 WANG Yan-xiang1,2, HE Qin3, YAN Bing-kui1,2(1. Tianjin Municipal Engineering Design ＆ Research Institute, Tianjin 300392, China ; 2. Tianjin Enterprise Key Laboratory of Infrastructure Durability, Tianjin 300392, China; 3. College of Environmental Science and Engineering, China West Normal University, Nanehong 637009, Chin)

机构地区：[1]天津市市政工程设计研究院,天津300392 [2]天津市基础设施耐久性企业重点实验室,天津300392 [3]西华师范大学环境科学与工程学院,四川南充637009

出　　处：《中国给水排水》2018年第10期119-122,共4页China Water & Wastewater

摘　　要：以三亚市海榆东线原水工程江林路路口的顶管施工为例,探讨了顶管套管内安装大口径焊接钢管的施工方法。通过分析类似工程,提出套管内漂管法顶推安装方案。通过套管内注水,千斤顶推进,卷扬机控制定位,封堵后的钢管借助自身浮力进行套管内穿。该方案能够安全、高效地完成套管内长距离焊接钢管的安装,具有阻力小、管道定位准确、外防腐层损伤低的特点,有效地节省了时间及资金。针对设计提出的套管内钢管加固方案,借助顶管机"逆应用",能有效控制吹砂过程中的含水率,避免了传统施工过程中的管道上浮及移位问题,完成了套管与内穿管道缝隙间的吹砂满填工作,同时实现吹砂管道的重复利用。Taking the pipe jacking construction of Haiyu East Line raw water transportation project in Jianglin Road intersection of Sanya City as an example, the construction method of installing large diameter welded steel pipe in jacking casing pipe was discussed. Through analysis of similar projects, the installation plan of pushing by pipe-floating in the casing pipe was put forward. By injecting water into the casing, jack pushing, controlling position by winch, casing penetration of sealed steel pipe by means of its own buoyancy. For the installation of welded steel pipe in the long-distance casing pipe, this method is safe and efficient with the advantages of small friction, accurate positioning and low damage of the outer anticorrosive layer. Aiming at tion＂ of pipe jacking machine the reinforcing design of steel pipe in casing pipe, ＂the reverse applicawas put forward. It could effectively control the water content in the sand blowing process so as to avoid the floating and shifting of the pipeline during the traditional construction process. So the sand blowing process could be completed between the casing and the inner pipe gap, and the reuse of the sand blown pipeline was realized.

关 键 词：漂管法 顶管施工 吹砂满填 定位 含水率 

分 类 号：TU991[建筑科学—市政工程]