| 青藏高原路堤边坡遮阳措施辐射影响分析 |
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| 引用本文： | 冯文杰,孙志忠,李国玉,武俊杰.青藏高原路堤边坡遮阳措施辐射影响分析[J].冰川冻土,2011,33(4):778-783. |
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| 作者姓名： | 冯文杰 孙志忠 李国玉 武俊杰 |
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| 作者单位： | 中国科学院寒区旱区环境与工程研究所冻土工程国家重点实验室,甘肃兰州,730000 |
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| 基金项目： | 中国科学院冻土工程国家重点实验室自主基金项目(SKLFSE-ZY-03),中国科学院西部行动计划(二期)项目(KZCX2-XB2-10); 国家自然科学基金创新群体项目(40821001),国家自然科学基金项目(40801022;40801024;40801026;41023003)资助 |
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| 摘 要： | 作为主动保护冻土的典型措施之一的路堤边坡遮阳板护坡措施，对于减少太阳直接辐射到达地表和降低路堤内部温度起到至关重要的作用，阻隔太阳的辐射，减少进入路堤净辐射量和进入地表的热流，降低路堤土体温度．现场试验结果表明：进入天然路堤边坡表面平均净辐射量为300～350W·m^-2，而遮阳板下路堤边坡表面的平均净辐射量为30～4...
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| 关 键 词： | 寒区 路堤 遮阳措施 净辐射 热流 |
Radiation Effect of Shading Board on Embankment Side Slope on Tibetan Plateau |
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| FENG Wen-jie,SUN Zhi-zhong,LI Guo-yu,WU Jun-jie.Radiation Effect of Shading Board on Embankment Side Slope on Tibetan Plateau[J].Journal of Glaciology and Geocryology,2011,33(4):778-783. |
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| Authors: | FENG Wen-jie SUN Zhi-zhong LI Guo-yu WU Jun-jie |
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| Institution: | FENG Wen-jie,SUN Zhi-zhong,LI Guo-yu,WU Jun-jie(State Key Laboratory of Frozen Soil Engineering,Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences,Lanzhou Gansu 730000,China) |
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| Abstract: | Because of the higher elevation and better atmosphere transparency,the Tibetan Plateau has stronger radiation than other regions,which let the daily variation of ground surface temperature more obvious.The shading board measure is one of the active protecting permafrost measures,which has been adopted widely along the Qinghai-Tibet railway and highway.The main contribution of the shading board measure is to cut off the sun radiation directly come to ground surface,and to reduce the net radiation and heat fl... |
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| Keywords: | cold regions embankment shading board measure(awning) net radiation heat flow |
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