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《Railway Standard Design》 2013-09
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Research on the Characteristics of Two-dimensional Wind Velocity Field of Embankment of Gobi Section of Linhe-Ceke Railway

YAO Li-qiang;ZUO He-jun;LI Gang-tie;LIU Bao-he;Inner Mongolia Agricultural University;  
To make clear the influence on the wind velocity field caused by different embankment heights and by different wind speeds in open country,as well as to make clear the likelihood of sand hazard,the observation on wind velocity field in open country for the embankment respectively with a height of 4m,8m and 12m was conducted on the Gobi section of Linhe-Ceke Railway by using wind direction and speed recorder HOBO.The results of the research show that the eddy current zone and weak wind zone of the wind velocity field of the embankment will expand gradually toward the leeward side as the embankment height or wind speed in open country increases.It is most likely to deposit quick sand at the windward slope toe,leeward slope shoulder and leeward slope toe of the embankment.The sand hazard is most easily formed at the road surface of the embankment with a height of eight meters,so the height of railway embankment in Gobi should not be more than eight meters.Moreover,the embankment's resistance effect against the wind velocity field,and the likelihood of sand hazard are all correlated positively with the height of embankment,and are correlated negatively with the wind speed in open country.These results can be useful for railway embankment cross-section design,elevation determination and sand prevention and control.
【Fund】: 内蒙古自然科学基金(2010MS0612);; 内蒙古农业大学科技创新团队资助计划(NDTD2010-11)
【CateGory Index】: U216.413
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