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| Research on the Heat Transfer Law of Ventilation Pipeline Embankment in Permafrost Regions of Qinghai-Tibet Plateau |
| JIANG Fu-Qiang , YANG Yong-pang |
| Northwest Research Institute Co.，Ltd. of China Railway Engineering Corporation , Lanzhou , Gansu 730000 , China |
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Abstract Research purposes: The ventilation pipeline embankment engineering is a new type embankment structure, it posses the characteristic of reduce temperature and raise artificial permafrost table, ensure the railway embankment safely during the construction of the railway and normal working. Based on the special climatic conditions and characteristics of air circulation of Qinghai-Tibet plateau, this paper analyzes of the way of sir convection in ventilation pipe and applies the basic theory of heat transfer to research on heat transfer law of ventilation pipeline embankment in permafrost regions of Qinghai-Tibet plateau.
Research results: The paper, basil on the systematic analysis and research, advances heat transfer theory of ventilation pipeline embankment in permafrost regions of Qinghai-Tibet plateau. The author thought the ventilation pipeline embankment has three heat transfer mode, namely, forced convection air, natural convection heat transfer and heart exchange. And the maximum effectiveness of a reasonable length and pathway was gained through theoretical calculations and test results in permafrost regions of Qinghai-Tibet plateau.
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Received: 25 June 2008
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[1]周幼吾，邱国庆，郭东信，等.中国冻土[M].北京:科学 出版社，2000.
[2]李国平.青藏高原动力气象学[J].北京:气象出版社， 2002.
[3]曹玉璋.传热学[M].北京:北京航空航天大学出版社， 2001.
[4]岳丹婷.工程热力学和传热学[M].大连:大连海事大学 出版社，2002.
[5]陈肖柏，等.土的冻结作用与地基[M].北京:科学出版 社，2006.
[6]铁道部第三勘察设计院.冻土工程[M].北京:中国铁道 出版社，2002.
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2008, Vol. 25 
