Laboratory investigation on water evaporative cooling effect in embankment with perforated ventilation pipe

ZHANG Jin-zhao; SUN Bin-xiang; LIU Qi; YANG Li-jun; WANG Shuang-jie

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Laboratory investigation on water evaporative cooling effect in embankment with perforated ventilation pipe

更新时间：2026-06-25

- Laboratory investigation on water evaporative cooling effect in embankment with perforated ventilation pipe
- Vol. 32, Issue 6, (2011)
- 作者机构：
  
  1. 中交第一公路勘察设计研究院有限公司多年冻土区公路建设与养护技术交通行业重点实验室,西安,710075
  2. 绍兴文理学院土木工程系,浙江,绍兴,312000
- 作者简介：
- 基金信息：
- DOI：
  CLC： U213.1
- Online First：21 June 2011，
  
  Published：2011
- 稿件说明：
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ZHANG Jin-zhao, SUN Bin-xiang, LIU Qi, et al. Laboratory investigation on water evaporative cooling effect in embankment with perforated ventilation pipe[J]. 2011, 32(6).
DOI：

ZHANG Jin-zhao, SUN Bin-xiang, LIU Qi, et al. Laboratory investigation on water evaporative cooling effect in embankment with perforated ventilation pipe[J]. 2011, 32(6). DOI：

摘要

以多年冻土区透壁通风管路堤为研究对象，进行了路堤蒸发降温效果的室内试验，分析了土体水分蒸发对路堤降温效果的影响机制。分析结果表明，路堤通风期间的水分主要通过裸露在管壁小孔的土体表面直接蒸发，其有利于降低路堤温度。暖季空气与管壁的对流换热效应可使路堤土体增温，同时，通过管壁小孔的水分蒸发散热将对路堤产生降温效应，由于融土的未冻水含量较大，使得通过管壁小孔的水分蒸发散热降温作用也较大，这使透壁通风管路堤总体显现出降温效果

Abstract

For the duct-ventilated embankment with a perforated ventilation pipe in permafrost regions

the laboratory experiment on the moisture evaporative cooling effectiveness was performed. The mechanism of moisture evaporation affecting on the cooling effect of duct-ventilated embankment was analyzed. It is shown that during the ventilating period water content in the embankment soil is directly evaporated from the soil surface bared in the small holes of the perforated pipe wall

thus to cool down the embankment soil. During warm time

convective heat transfer between the ambient air and the pipe wall may raise the embankment soil temperature

whereas evaporation heat removal from the small holes of the pipe wall can cool down the embankment. During warm time

the water evaporative cooling capability from the small holes of the pipe wall is stronger due to big unfrozen water content in the unfrozen soil

thus

as a whole

revealing the cooling effect in the perforated ventilation pipe embankment

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Related Author

WANG Shuang-jie

ZHANG Jin-zhao

WANG Wei

SUN Bin-xiang

YANG Li-jun

XU Xue-zu

LIU Qi

WANG Wei

Related Institution

Key Laboratory of Highway Construction and Maintenance Technology for Permafrost Regions, Ministry of Communications, CCCC First Highway Consultants Co., Ltd.

State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences

Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology

Western Engineering Research Center of Disaster Mitigation in Civil Engineering of Ministry of Education, Lanzhou University of Technology

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