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供热管道直埋敷设,目前是最经济的一种敷设方式。比较地沟敷设,能减少土方工程,节约大量建筑地沟的材料和工时,使工程总投资比地沟敷设下降20～50％,施工周期缩短一半以上。而且热损失小,对地下水位适应性强,施工及运行占地少,便于机械化施工等。国内的一些城市(如北京、吉林、抚顺、沈阳、佳木斯等),在集中供热管网中,部分管道已采取直埋敷设,取得了良好的效果。
Heating pipes are buried directly and are currently the most economical laying method. Comparing the ditch laying can reduce the earthworks, save a large amount of construction trench materials and man-hours, so that the total investment of the project is reduced by 20 to 50% compared to the laying of trenches, and the construction period is shortened by more than half. And the heat loss is small, adaptable to the groundwater level, construction and operation of the land, easy to mechanized construction. In some domestic cities (such as Beijing, Jilin, Fushun, Shenyang, Jiamusi, etc.), in the centralized heating network, some of the pipelines have been laid directly and laid a good effect.