| 采控冷量维护冻土路基稳定的模拟试验研究 |
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| 引用本文： | 刘志强,周国庆,马巍,牛富俊,别小勇.采控冷量维护冻土路基稳定的模拟试验研究[J].冰川冻土,2004,26(Z1):97-103. |
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| 作者姓名： | 刘志强 周国庆 马巍 牛富俊 别小勇 |
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| 作者单位： | School of Architecture and Civil Engineering, CUMT, Xuzhou Jiangsu 221008, China;State Key Laboratory of Frozen Soil Engineering, CAREERI, CAS, Lanzhou Gansu 730000, China,State Key Laboratory of Frozen Soil Engineering, CAREERI, CAS, Lanzhou Gansu 730000, China,School of Architecture and Civil Engineering, CUMT, Xuzhou Jiangsu 221008, China |
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| 基金项目： | 国家重点基础研究发展计划(973计划)
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中国科学院知识创新工程项目
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The Open Foundation of State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering Research Institute, CAS
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The Special Fund for New Century Academic Leader "Qinglan Project" of Jiangsu Province |
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| 摘 要： | The stability of railway subgrade in permafrost regions is crucial to the safety of railway operation. In this paper, we first analyze the main factors influencing the stability of frozen subgrade. Then,we build an experimental equipment in which regulation-tubes are arranged axially in subgrade and arranged slantways at the foot of slopes, and make the model experiments on maintaining the stability of frozen subgrade by collecting- controlling cold energy. The experiments include two groups. One is maintaining the stability by collecting-controlling natural cold energy in winter, and another is maintaining the stability by collecting-controliing natural cold energy in winter and artificial cold energy in summer. Finally, we obtain the behavior of temperature fields in the subgrade during the experiments,which establishes basis for further study on the subgrade stability and on the feasibility of rushing to deal with freezing damage of frozen subgrade.
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| 关 键 词： | Qinghai-Tibet railway frozen subgrade collecting-controlling cold energy model experiment |
Model Experiment Study on Maintaining Stability of Frozen Subgrade by Collecting-Controlling Cold Energy |
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| LIU Zhi-qiang,ZHOU Guo-qing,MA Wei,NIU Fu-jun,BIE Xiao-yong.Model Experiment Study on Maintaining Stability of Frozen Subgrade by Collecting-Controlling Cold Energy[J].Journal of Glaciology and Geocryology,2004,26(Z1):97-103. |
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| Authors: | LIU Zhi-qiang ZHOU Guo-qing MA Wei NIU Fu-jun BIE Xiao-yong |
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| Abstract: | The stability of railway subgrade in permafrost regions is crucial to the safety of railway operation. In this paper, we first analyze the main factors influencing the stability of frozen subgrade. Then,we build an experimental equipment in which regulation-tubes are arranged axially in subgrade and arranged slantways at the foot of slopes, and make the model experiments on maintaining the stability of frozen subgrade by collecting- controlling cold energy. The experiments include two groups. One is maintaining the stability by collecting-controlling natural cold energy in winter, and another is maintaining the stability by collecting-controliing natural cold energy in winter and artificial cold energy in summer. Finally, we obtain the behavior of temperature fields in the subgrade during the experiments,which establishes basis for further study on the subgrade stability and on the feasibility of rushing to deal with freezing damage of frozen subgrade. |
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| Keywords: | Qinghai-Tibet railway frozen subgrade collecting-controlling cold energy model experiment |
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