多年冻土地区铁路路堤北坡和南坡热状况差异分析(英文)
Analysis on the Difference of Thermal State between South Faced and North Faced Slope of Railway Embankment in Permafrost Regions
摘要
Based on the observationaldata at Beiluhe test site of Qinghai-Tibetan Railway, the difference ofthermal state between south faced and north faced slope was analyzed. The results indicated that the mean annualground temperature at the depth of 0.5m on south faced slopewashigher than that on north faced slope by over 3 ℃. The higher temperature on south faced slope was greatly attributed tothehigh temperature during winter time. This kind of difference in thermal state may result in asymmetric thermal regime in embankment as well as in underlying soil. As a result, theunevenly transverse deformation mayappear.
Based on the observationaldata at Beiluhe test site of Qinghai-Tibetan Railway, the difference ofthermal state between south faced and north faced slope was analyzed. The results indicated that the mean annualground temperature at the depth of 0.5m on south faced slopewashigher than that on north faced slope by over 3 ℃. The higher temperature on south faced slope was greatly attributed tothehigh temperature during winter time. This kind of difference in thermal state may result in asymmetric thermal regime in embankment as well as in underlying soil. As a result, theunevenly transverse deformation mayappear.
出处
《冰川冻土》
CSCD
北大核心
2004年第S1期161-165,共5页
Journal of Glaciology and Geocryology
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