Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Journal of Glaciology and Geocryology》 2005-01
Add to Favorite Get Latest Update

Constructing of the Qinghai-Tibet Railroad Using the Principle of Cooling the Roadbed

CHENG Guo-dong (State Key Laboratory of Frozen Soils Engineering, CAREERI, CAS, Lanzhou Gansu 730000, China)  
More than half of the total length of the Qinghai-Tibet Railroad (QTR) traverses warm (0 to {-1} ℃) permafrost areas, and about 40% of its total length is in ice-rich permafrost areas. The construction of the QTR also must consider the impacts of climatic warming along the QTR during the next 50~100 years. The latest projection indicates a warming of 2^2 to 2^6 ℃ on the Qinghai-Tibet Plateau (QTP) by the year 2050. Therefore, the key to the successful construction of the QTR is to protect permafrost from being thawed. Although railroad construction in permafrost areas has had a history of more than 100 years, the troubled sections of the railroads in permafrost areas have been greater than 30% of their total length. Based on the experiences and lessons learned from the road construction in permafrost areas, both in China and abroad, the author proposes that the principle of !active cooling" of railroad roadbed by lowering permafrost temperatures should be used in designing QTR, rather than that of !passive protection" of permafrost through increasing thermal resistance of roadway, such as increasing fill thickness and/or using insulative materials. This is especially important for the road sections in warm, ice-rich permafrost. In addition, this paper proposes several methods for !cooling the roadbed" by controlling radiation, convection and conduction through modifying roadway structure and using different fill materials.
【Fund】: This work was supported by the Knowledge Innovation Program of the Chinese Academy of Sciences (KZCX SW 04)
【CateGory Index】: U213.1
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
【References】
Chinese Journal Full-text Database 3 Hits
1 MAO Xue-song,WANG Bing-gang,HU Chang-shun,DOU Ming-jian(Key Laboratory for Special Area Highway Engineering of Ministry of Education,Chang'an University,Xi'an Shaanxi 710064,China);Numerical Analyses of Deformation and Stress Fields in Permafrost Regions[J];Journal of Glaciology and Geocryology;2006-03
2 CHEN Ji1,YU Qi-hao1,SHENG Yu1,FANG Jian-hong2 (1.State Key Laboratory of Frozen Soil Engineering,CAREERI,CAS,Lanzhou Gansu 730000,China;2.Institute for Highway Design and Research of Qinghai Province,Xining Qinghai 810008,China);Application of Diatomite Slope-Protection to Higher Embankment in Permafrost Regions[J];Journal of Glaciology and Geocryology;2008-03
3 LI Guoyu1,LI Ning1,2,KANG Jiamei2(1.State Key Laboratory of Frozen Soil Engineering,Cold and Arid Region Environmental and Engineering Research Institute,Chinese Academy of Sciences,Lanzhou,Gansu 730000,China;2.Institute of Geotechnical Engineering,Xi′an University of Technology,Xi′an,Shaanxi 710048,China);STUDY ON COOLING MECHANISM OF EMBANKMENT WITH CRUSHED-STONE SIDE-SLOPE ALONG QINGHAI—TIBET RAILWAY IN PERMAFROST REGION[J];Chinese Journal of Rock Mechanics and Engineering;2007-S1
【Co-references】
Chinese Journal Full-text Database 10 Hits
1 Cheng Guodong (Cheng Kuotung ) , Tong Boliang (Lanzhou Institute of Glaciology and Cryopedology, Academia Sinica) Luo Xuobo (Department of mathematics and Mechanic's, Lanzhou University);TWO IMPORTANT PROBLEMS OF EMBANKMENT CONSTRUCTION IN THE SECTION OF MASSIVE GROUND ICE[J];Journal of Glaciology and Geocryology;1981-02
2 Yang Hairong ( Northwest Institute, Academy of Railway Sciences );The Roadbed Stability in Permafrost Region[J];Journal of Glaciology and Geocryology;1985-01
3 Kang Xingcheng(Lanzhou Institute of Glaciology and Geocryology, Chinese Academy of Sciences, 730000);The Features of the Climate Changes in the Qing-Zang Plateau Area During the Last 40 Years[J];Journal of Glaciology and Geocryology;1996-S1
4 FENG Wen jie 1 , LI Dong qing 1 , MA Wei 1 ZHANG Lu xin 2 (1. State Key Laboratory of Frozen Soil Engineering, CAREERI, CAS, Lanzhou Gansu 730000, China; 2.Northwest Branch, Chinese Academy of Railway Sciences, Lanzhou Gansu 73;Influence of Climate Warming on Permafrost Table Studied with Different Models and Temperatures[J];Journal of Glaciolgy and Geocryology;2001-04
5 HU Ze-yong,\ QIAN Ze-yu,\ CHENG Guo-dong,\ WANG Jie-ming (Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences LanzhouGansu 730000, China);Influence of Solar Radiation on Embankment Surface Thermal Regime of the Qinghai-Xizang Railway[J];Journal of Glaciolgy and Geocryology;2002-02
6 MA Wei,\ CHENG Guo\|dong,\ WU Qing\|bai (State Key Laboratory of Frozen Soil Engineering, CAREERI, CAS, Lanzhou Gansu 730000, China);Preliminary Study on Technology of Cooling Foundation in Permafrost Regions[J];Journal of Glaciolgy and Geocryology;2002-05
7 YU Wen\|bing, LAI Yuan\|ming, NIU Fu\|jun, ZHANG Xue\|fu, ZHANG Shu\|juan (State Key Laboratory of Frozen Soil Engineering, CAREERI, CAS, Lanzhou Gansu 730000, China);Temperature Field Features in the Laboratory Experiment of the Ventilated Railway Embankment in Permafrost Regions[J];Journal of Glaciolgy and Geocryology;2002-05
8 YU Qi\|hao,\ LIU Yong\|zhi,\ TONG Chang\|jiang ( State Key Laboratory of Frozen Soil Engineering, CAREERI, CAS, Lanzhou Gansu 730000, China);Analysis of the Subgrade Deformation of the Qinghai-Tibetan Highway[J];Journal of Glaciolgy and Geocryology;2002-05
9 WANG Ke li, CHENG Guo dong(Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences,Lanzhou Gansu 730000, China);Thermodynamic Model of the Ground Surface and the Roadbed Surface along the Qinghai-Tibetan Railway(Ⅰ): Physical Process and Experimental Scheme[J];Journal of Glaciolgy and Geocryology;2002-06
10 MI Long 1, LAI Yuan ming 2, ZHANG Ke hua 3(1. The Faculty of Civil Engineering, Northern Jiaotong University, Beijing 100044, China; 2. State Key Laboratory of Frozen Soil Engineering, CAREERI, CAS, Lanzhou Gansu 730000,China; 3. The Faculty of Civil Engineering, Lanzhou Railway Institute, Lanzhou Gansu 730000,China);3D Nonlininear Analyses for Temperature Field of Ventilative Embankment in Cold Regions[J];Journal of Glaciolgy and Geocryology;2002-06
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved