通常,热力管网敷设在不通行的钢筋混凝土管沟里,这样,就会造成占用大量的劳动力,耗费装配式钢筋混凝土,同时也不能保证热力管网的可靠性和耐久性。过渡到无管沟敷设热力管网,包括用沥青珍珠岩保温的,可以加快热力管网的施工,保证管道可靠地防腐,减少热损失,以及保证节约大量的钢筋混凝土。沥青珍珠岩与目前所采用的其它种类保 In general, the heat pipe network is laid in an impenetrable reinforced concrete pipe ditch. In this way, a large amount of labor is consumed, assembly type reinforced concrete is consumed, and the reliability and durability of the heat pipe network cannot be guaranteed at the same time. The transition to non-gap laid heat pipe network, including the use of asphalt perlite insulation, can speed up the construction of heat pipe network, ensure that the pipe can be reliably preserved, reduce heat loss, and ensure that a large amount of reinforced concrete can be saved. Asphalt perlite and other types of protection currently used