集中供热无补偿直埋管道技术

Noncompensated Directly Buried Pipeline Technology of Central Heating

总结了集中供热无补偿直埋管道的施工技术,论述了管网的分布应利用转弯来满足管道的伸缩需要,沟槽的宽度可以用埋地管道直径来确定(其一半为沟槽内管道与管道的间距、管道与沟槽边的间距),深度要在冻土层以下,管道敷设按施工工序要注意平沟填砂和对管找坡的技术要求,阐述了管道焊接、保温及回填的技术要求及注意事项。指出了影响施工质量的几个重要因素。

The article summarizes the constructing technique of the direct - buried pipeline without compensation in the central heating, elucidates the distribution of network should meet pipeline＇s expansion need as far as possible using the curve , and the determination of the space between the pipes and the space between the pipes and the trench could use the diameter of the pipe （its half is the space length between pipeline, the space length of pipeline and trench side in the trench）, the depth must below the frozen earth level, the pipe laying must pay attention to the even ditch sanding - up according to the construction working procedure and look for the slope to the tube the specification ; elucidates the technical requirements and notes about the welding of pipeline , heat preservation as well as backfill; indicates some important factors for the construction quality.