Effects of side slope inclination on drifting snow of embankment

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Journal of Vibration and Shock ›› 2021, Vol. 40 ›› Issue (3) : 87-94.

LIU Qingkuan1,3, LIANG Pengfei3, GAO Ling4, HE Shuyong3, LI Haifei3, JIA Yaya1,3

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Abstract

Side slope inclination of embankment is an important factor to affect embankment snow cover in wind-blown snow area. Here, field model tests and flow field numerical simulation method were used to study the influence law of side slope gradient on embankment snow cover, and analyze snow cover formation mechanism. The results showed that there is a good corresponding relationship between snow area around embankment and flow field wind speed weakening area, but it is not quantitative; the method of simply quantifying snow area by using the wind speed weakening area in flow field has a larger error; the change of windward side slope inclination has a larger effect on distribution of snow around embankment, a gentler windward side slope inclination effectively reduces the amount and range of snow around embankment, and the road surface is not easy to form snow cover to reduce the damage of wind and snow flow to embankment engineering; the change of leeward side slope inclination has a smaller effect on snow cover around embankment, it can be considered as a secondary factor in embankment design; according to test and simulation results, the critical side slope inclination for the road surface being not easy to form snow cover is between 40° and 45°; for the purpose of conservation, 40 ° should be taken as the critical side slope inclination for the road surface being not easy to form snow cover.

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drifting snow / side slope of embankment / field model test / numerical simulation

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LIU Qingkuan1,3, LIANG Pengfei3, GAO Ling4, HE Shuyong3, LI Haifei3, JIA Yaya1,3. Effects of side slope inclination on drifting snow of embankment[J]. Journal of Vibration and Shock, 2021, 40(3): 87-94

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