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青藏铁路北麓河试验段通风管路基工程效果初步分析 被引量:18

PRILIMINARY ANALYSIS ON ENGINEERING EFFECT OF VENTILATION EMBANKMENT AT BEILUHE TESTING SECTION OF QINGHAI-TIBET RIALWAY
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摘要 针对青藏铁路北麓河试验段通风管路基结构的工程效果,基于试验路基在第一个冻融循环周期内的温度监测资料,初步分析了路基温度的发展与温度场分布特征,并对通风管铺设位置、高度等的影响进行了初步分析。结果表明,通风管在路基具有保护多年冻土的作用,同时,管径较大的通风管工程效果相对较好,通风管埋设位置低的路基工程效果要优于通风管埋设位置高的路基。 Based on ground temperature record of one year at Beiluhe section of Qinghai-Tibet Railway,where field testing embankment was constructed,the engineering effect of duct-ventilation embankment is discussed. Testing results indicate that duct-ventilation embankment is available to protect the underlying permafrost and can even extend it. It is also shown that it is better to apply large-diameter ducts and to bury ducts near the initial ground surface,so that the engineering effect of ventilation embankment can be enhanced.
出处 《岩石力学与工程学报》 EI CAS CSCD 北大核心 2003年第z2期2652-2658,共7页 Chinese Journal of Rock Mechanics and Engineering
基金 国家自然科学基金(50008016 40225001) 中国科学院知识创新(KZCX2-306)资助项目。
关键词 土力学 青藏高原 铁路 冻土 通风路基 soil mechanics,Qinghai-Tibet plateau,railway,permafrost,ventilation embankment.
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参考文献4

  • 1[1]Johnson G H.Permafrost Engineering Design and Construction[M].Albesta,Canada:Henter Rose Company,1981,346~349,251~255
  • 2[2]Nixon J F.Geothermal aspects of ventilated pad design[A].In:Proceedings of the 3rd Int.Conf.on Permafrost Edmonton[C].Alberta,Canada:[s.n.],1978,841~846
  • 3[4]Odom William B.Practical application of under slab ventilation system[A].In:Prudhoe Bay Case Study of Permafrost[C].Washington,D.C.:National Academy Press,1983,940~944
  • 4[5]John P,Zarling P E,Billy Connor,et al.Goering air duct systems for stabilization over permafrost area[A].In:Proceeding of the 4th Int.Conf.on Permafrost[C].Fairbanks:[s.n.],1983,1 463~1 468

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