Evaluating the cooling performance of crushed-rock interlayer embankments with unperforated and perforated ventilation ducts in permafrost regions
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- 作者：Mingyi Zhang ; myzhang@lzb.ac.cn" class="auth_mail" title="E-mail the corresponding author ; Xiyin Zhang ; Shuangyang Li ; Daoyong Wu ; Wansheng Pei ; Yuanming Lai
- 关键词：Cooling performance ; Crushed-rock interlayer embankment ; Perforated ventilation duct ; Expressway ; Permafrost region
- 刊名：Energy
- 出版年：2015
- 出版时间：15 December 2015
- 年：2015
- 卷：93
- 期：part_P1
- 页码：874-881
- 全文大小：1293 K
文摘
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The cooling performance of crushed-rock interlayer embankments with ventilation ducts is evaluated.
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The cooling performance can be greatly enhanced if the ventilation ducts are perforated.
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A good cooling effect can still be achieved even if the centerline spacing of the perforated ventilation ducts is enlarged to 4 m.
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The crushed-rock interlayer embankment with perforated ventilation ducts is a better candidate structure for permafrost expressways.