冬季除冰雪融雪剂合理撒布量和精益撒布研究

Study on Reasonable Spreading Amount and Lean Spreading of Snow and Ice Melting Agent in Winter

为探明公路除冰雪时融雪剂的合理撒布量和撒布方式,依托长治高速公路冬季除冰雪养护工程,通过现场试验研究不同材质路面和积雪厚度条件下不同融雪剂撒布量和撒布方式的融雪效果。得到如下结论:(1)提前在道路上撒布融雪剂比在道路积雪后撒布融雪剂融雪效率高,效果也更好。(2)融雪剂撒布在钢桥面上融雪效果最好,其次是撒布在沥青混凝土路面上,撒布在水泥混凝土路面上融雪效果最差。(3)积雪厚度在3cm以内,融雪剂融雪效果明显;积雪厚度在5cm以上,融雪效果都不太好;融雪剂合理撒布量应在200g/m^(2)以上,桥梁、隧道口、背阴纵坡地带的撒布量可以提高到500g/m^(2)以上。

In order to find out the reasonable amount and mode of snow-melting agent during snow and ice removal on highway,relying on the winter snow-melting maintenance project of Changzhi Expressway,the snow-melting effects of different snow-melting agents and snow-melting methods on different materials and snowfall conditions were studied through field experiments.The conclusions are as follows:(1)Spreading snow melting agent on the road in advance is more efficient and effective than spreading snow melting agent on the road with thick snow.(2)The snow-melting effect of snow-melting agent spread on the steel bridge deck is the best,followed by that on the asphalt concrete pavement,and the snow-melting effect on the cement concrete pavement is the worst.(3)When the snow thickness is less than 3cm,the snow melting effect of snow melting agent is obvious;when the snow thickness is above 5cm,the snow melting effect is not very good;the reasonable distribution amount of snow melting agent should be above 200g/m^(2),and the distribution amount of bridge,tunnel entrance and shady longitudinal slope can be increased to more than 500g/m^(2).