Abstract：Research purposes: The cutting is the section pattern that the most easily causes the snow － drift disaster in the railway snow － drift． To research the relation between the cutting pattern and the snow － drift to effectively avoid or relieve the snow － drift disaster has the theoretical and real significances for control of the snow － drift disaster．
Research conclusions: From the f results of field observation and the simulation analysis with finite element method it is concluded in this paper that the wind speed is small in the cutting，but it the mostly easily causes the wind snow drift． The deeper the cutting is，the larger the scale and scope of scroll deceleration zone are at the toe of the cutting slope in the upper wind direction，the bigger the critical storage of snow on the slope is，the relatively slower the process of the blizzard flow disasters is． The more slowly the slope is，the smaller the scale and scope of scroll deceleration zone are． The moderate slope can reduce the snow － drift of subgrade surface，but it doubles the engineering quantity． To consider two aspects of engineering security and economic benefits，the rate of slope should be chosen by taking other snow damage control measures into account ．
Gao Weidong，Liu Mingzhe，Wei Wenshou，etc． Study on the Drifting Snow Disaster along Railway and Preventive Treatment ［J］． China Railway Sciences， 2004( 5) : 97 － 101．
Gao Weidong， Liu Mingzhe， Wei Wenshou， etc． Formation Mechanism of Snow Disasters along Railways and Their Engineering Prevention and Control ［J］． Journal of Natural Disasters， 2004( 5) : 90 － 96．
Chen Xiaoguang，Li Junchao，Li Changlin，etc． The Harm of Snow － bearing Wind to Highway Traffic and Its Countermeas － ures［J］． Highway，2001( 6) : 113 － 117．
2012, Vol. 29 
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