路堤工程风吹雪灾害分析

Snow drifting is a main type of disaster in the cold environment, so research on the snow drifting of the subgrade has very important academic and practical significance. In this study, the embankment wind velocity structure is simulated by the method of FLUENT, and according to the theory which the snow drifting often occurs at the wind velocity slowdown area, the wind velocity field of embankment is analyzed in different conditions of subgrade height, slope ratio and background wind velocity. Further more, the slowdown area is confirmed. The numerical values approximately coincide with the field observed results. Higher embankment (not higher than 12 meters), smaller slope ratio and bigger background wind velocity can abate effectively the road surface snow drifting. This conclusion can offer scientific reference for embankment project design.