| 冻土区典型热融滑塌地温变化及防治效果模拟 |
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| 引用本文： | 马立峰,牛富俊,刘建坤,吴军.冻土区典型热融滑塌地温变化及防治效果模拟[J].北京交通大学学报(自然科学版),2009,33(4). |
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| 作者姓名： | 马立峰 牛富俊 刘建坤 吴军 |
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| 作者单位： | 北京交通大学,土木建筑工程学院,北京,100044;中国科学院,冻土工程国家重点实验室,兰州,730000;西安长庆科技工程有限责任公司,西安,710021 |
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| 基金项目： | 科技部支撑计划资助(2006BAC07B02);;国家自然科学基金资助项目(40471023);;自然科学基金国际合作项目(40640420072);;中科院“西部之光”联合学者项目 |
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| 摘 要： | 冻土地区斜坡的稳定性很大程度上取决于坡体内温度场的分布状况.在野外观测数据无法完整的反映出热融滑塌发展过程中斜坡温度场分布的情况下,结合青藏公路K3035热融滑塌的气候及工程地质条件,应用有限元方法进行了滑塌过程温度场分布的数值模拟,并与实际观测资料进行了对比,进一步讨论了在滑坎位置填埋碎石的工程防治措施的效果.结果表明滑坎位置下多年冻土不稳定,容易导致斜坡的进一步滑塌,而防治措施能有效遏制滑塌趋势.
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| 关 键 词： | 多年冻土 热融滑塌 数值分析 青藏高原 |
Numerical Analysis of Ground Temperature Regime and Preventing Measures of Typical Thaw Slumping |
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| MA Lifeng,NIU Fujun,LIU Jiankun,WU Jun.Numerical Analysis of Ground Temperature Regime and Preventing Measures of Typical Thaw Slumping[J].JOURNAL OF BEIJING JIAOTONG UNIVERSITY,2009,33(4). |
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| Authors: | MA Lifeng NIU Fujun LIU Jiankun WU Jun |
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| Institution: | 1.School of Civil Engineering;Beijing Jiaotong University;Beijing 100044;China;2.State Key Laboratory of Frozen Soil Engineering;Cold and Arid Regions Environmental and Engineering institute;Chinese Academy of Sciences;Lanzhou 730000;3.Xi'an Changqing Technology Engineering Co.;Ltd;Xi'an 710021;China |
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| Abstract: | The slopes in permafrost regions are different from other types.Among the slope instability types,thaw slumping is the most hazardous for engineering projects.And the stability of these slopes is mainly decided by its temperature distribution.However,the temperature distribution in the slope can not be described completely by the ground temperature data of long-term monitoring.Therefore,through using the FE code GEO-SLOPE,the numerical simulation is carried out on a typical thaw slumping.Compared with the g... |
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| Keywords: | Permafrost thaw slumping numerical analysis Qinghai-Tibet plateau |
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