建筑物发生火灾,往往由于灭火用水使建筑物及其中的财物遭受水渍损失,特别是中高层建筑,水向下层流动,水渍损失向下方呈扇形状扩展,所造成的次生灾害,有时甚至超过火烧的损失。有鉴于此,消防人员在灭火时总会想方设法来避免或减少水渍损失。如:以防水布覆盖财物;灭火后用抽水机排出积水等。近年来有些消防队还采用高压消防车高压喷雾管枪灭火,以提高灭火效能,减少出水量的措施。尽管如此,在很多场合,火灾的水渍损失还不能有效地减少。积存于地面的少量水和沿墙壁落下的水很难排出,尤其是狭窄坑洼 In the event of a fire in a building, water damage often occurs to the building and its belongings due to extinguishing water, especially in middle and high-rise buildings. Water flows downward, and water loss losses extend fan-shaped downward, resulting in secondary disasters, sometimes Even more than the loss of fire. In view of this, firefighters always try their best to avoid or reduce water loss during fire extinguishing. Such as: covered with tarpaulin property; fire extinguishing water discharged by a pump and so on. In recent years, some fire brigade also uses high-pressure fire engine high-pressure spray gun fire extinguishing to improve fire fighting efficiency, reduce the amount of water measures. In spite of this, on many occasions, water loss from fire can not be effectively reduced. A small amount of water accumulated on the ground and falling along the wall of the water is difficult to discharge, especially narrow potholes