...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Cold regions science and technology >Investigation on the heat extraction capacity of the heat drain for thermal stabilization of embankments on thaw sensitive permafrost
【24h】

Investigation on the heat extraction capacity of the heat drain for thermal stabilization of embankments on thaw sensitive permafrost

机译：散热敏感堤坝热稳定热排水散热能力研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Construction of transportation infrastructure often results in permafrost degradation and climate warming amplifies this phenomenon. Heat drains, based on wintertime natural convection, are a new mitigation tech-nique designed to limit or avoid the thawing of permafrost. In winter, heat extraction is enhanced by the buoyancy-driven convection of the pore-air due to unstable air density in the heat drain. To monitor the effi-ciency of this technique, a heat drain was constructed in the shoulder of the Tasiujaq airstrip in Northern Quebec, Canada, in the summer of 2007. Thermistors were installed beneath the side slopes to measure ground temperatures. A good thermal performance was observed resulting in thermal stabilization of the underlying permafrost. A thermal model was developed based on the Tasiujaq experimental site characteristics and con-ditions. The model was also calibrated to the field data collected at Tasiujaq. A set of design charts were de-veloped through the model and were successfully validated using the measured data from Salluit, Northern Quebec, Canada, where a heat drain was installed in 2012.
机译：运输基础设施的建设经常导致永久冻土降解和气候变暖放大这种现象。基于冬季自然对流的热排水管是一种新的缓解技术 - 旨在限制或避免解冻永久冻土。在冬季，由于热排放中的不稳定空气密度，孔隙空气的浮力驱动对流增强了热萃取。为了监测该技术的效率，在2007年夏季，在加拿大魁北克北部的Tasiujaq Iirstrip的肩部中建造了一个热排水。热敏电阻安装在侧面斜坡下方以测量地面温度。观察到良好的热性能，导致底层永久冻土的热稳定。基于Tasiujaq实验现场特征和Con-inition开发了热模型。该模型也被校准到Tasiujaq收集的现场数据。一系列设计图表通过模型进行了消除，并使用来自魁北克北部魁北克北部的测量数据成功验证，加拿大，2012年安装了热排水。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号