在热网施工中排除埋设管沟的自然积水具有重要作用.为了达到排除自然积水的的目的,在埋设管线时要求沿管线安装排水沟,通常排水沟是用陶瓷管、石棉水泥带孔管或过滤管做成.除此之外,如用钢筋混凝土地沟时,必须附加用水玻璃防水的外砖挡土墙,并还要复盖很厚的水泥层.防水管沟的传统结构在施工中还没有实现机械化,由于它在施工中主要是手工劳动,所以要付出很大的劳动量.而采用过滤管作 Excluding the natural water in the buried pipe trench during heating network construction plays an important role. In order to eliminate the problem of natural water accumulation, it is required to install a drainage ditch along the pipeline during the laying of the pipeline. Usually, the drainage ditch is made of ceramic pipes and asbestos cement with holes. In addition, if a reinforced concrete trench is used, the outer brick retaining wall that is waterproofed with water glass must be attached, and a very thick cement layer must be covered. The traditional structure of the waterproof trench is under construction. In the process, mechanization has not yet been realized. Because it is mainly manual labor during construction, it requires a large amount of labor.