| 多年冻土区路基分层变形现场观测研究 |
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| 引用本文： | 余帆,齐吉琳,姚晓亮.多年冻土区路基分层变形现场观测研究[J].冰川冻土,2011,33(4):813-818. |
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| 作者姓名： | 余帆 齐吉琳 姚晓亮 |
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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试验室,甘肃兰州,730000 |
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| 基金项目： | 中国科学院百人计划项目“多年冻土地区路基变形与稳定性研究”(2006); 国家自然科学基金项目(40871039)资助 |
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| 摘 要： | 在人类工程活动和气候变暖的双重作用下，多年冻土区的道路路基普遍产生以路基下沉为主的病害．多年冻土地区的路基沉降涉及多个物理力学过程：未冻土的蠕变，冻土上限下降所产生的融沉，由于多年冻土层升温而产生的高温冻土的蠕变，以及活动层中冻融循环改变了土的工程性质而导致的附加沉降变形．为了进一步探索各个物理力学过程对总沉降量贡献，...
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| 关 键 词： | 青藏公路 多年冻土 融沉 蠕变 冻融作用 |
Monitoring Settlement at Different depths within an Embankment in Permafrost Region |
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| YU Fan,QI Jin-lin,YAO Xiao-liang.Monitoring Settlement at Different depths within an Embankment in Permafrost Region[J].Journal of Glaciology and Geocryology,2011,33(4):813-818. |
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| Authors: | YU Fan QI Jin-lin YAO Xiao-liang |
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| Institution: | YU Fan,QI Jin-lin,YAO Xiao-liang(State Key Laboratory of Frozen Soil Engineering,Cold and Arid Regions Environmental and EngineeringResearch Institute,Chinese Academy of Sciences.Lanzhou Gansu 730000,China) |
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| Abstract: | Under the influence of both engineering activities and global warming,settlement is regarded as a heavy embankment disease in permafrost regions,which may result from many physical and mechanical processes,i.e.,creep of unfrozen layers,thawing settlement due to the degradation(thawing) of the permafrost underneath,creep of warm frozen layers,freeze-thaw cycling of the active layer.In order to investigate the contribution of each physical and mechanical process to embankment settlement,settlement measuring d... |
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| Keywords: | Qinghai-Tibet Highway permafrost thawing settlement creep freeze-thaw cycle |
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