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工程顶管起点设顶进工作井1座,终点设接受工作井1座。顶管井内布置设备包括基坑导轨、后靠背、主千斤顶、主定泵站、顶铁、焊接设备等。文章结合南水北调安阳供水管道穿越京珠高速工程实例,从顶管工作井现场布置、顶管机选型、管道顶进控制、中继间应用、触变泥浆配制及压浆减阻、钢管安装防腐及自密实混凝土灌注等方面,对供水工程施工措施和要点进行了详细分析,以期达到较好效果。
Project pipe jacking set top into the work of a well, the end set to accept a working well. Top tube well layout equipment, including pit guide, back, the main jack, the main pump station, top iron, welding equipment. Combined with the case study of Beijing-Zhuhai Expressway in the South-to-North Water Diversion Project, this paper analyzes the layout of the well pipes from the top of the well, the layout of the pipe jacking machine, the selection of pipe jacking machines, the pipe jacking control, the inter-relay application, thixotropic mud preparation and grouting drag reduction. And self-compacting concrete pouring and other aspects of the water supply project construction measures and points were analyzed in detail in order to achieve better results.