Thermal stabilization of duct-ventilated railway embankments in permafrost regions using ripped-rock revetment
作者： Hou Yandong , Wu Qingbai , Niu Fujun , Liu Yongzhi
DOI: 10.1016/J.COLDREGIONS.2015.10.002
关键词:
摘要: Abstract Duct-ventilated railway embankment (DVE) is relatively effective at preserving underlying permafrost under the current climatic conditions. To increase its capacity to adapt climate warming, a ripped-rock revetment was added DVE. evaluate effectiveness in cooling of different treatments, long-term in-situ soil temperature data were collected from eight experimental sections along Qinghai–Xizang Railway Beiluhe region between 2002 and 2012. Analysis these temperatures shows that addition improving DVE, enhancing thermal stability both body permafrost. Soil overall decreases about 0.5–1.0 °C, decrease, artificial table further raised, average range for effect gets enlarged joint ventilated ducts revetment. What more, this embankments with low-positioned greater than high-positioned ducts. Besides, diameter 30 cm coupled 40 cm. Another positive outcome reinforcement restriction difference sunny shady shoulders, especially or 30 cm. Therefore, implementation recommended duct-ventilated embankments, particularly where are present.
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sci-hub.se 参考文章(26)
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