| 黑方台黄土泥流滑坡及发生机制研究 |
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| 引用本文： | 武彩霞,许领,戴福初,闵弘,谭国焕,邝国麟,周跃峰.黑方台黄土泥流滑坡及发生机制研究[J].岩土力学,2011,32(6):1767-1773. |
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| 作者姓名： | 武彩霞 许领 戴福初 闵弘 谭国焕 邝国麟 周跃峰 |
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| 作者单位： | 1. 中国科学院地质与地球物理研究所，北京 100029；2. 中国科学院武汉岩土力学研究所，武汉 430071；3. 香港大学 工程学院，中国 香港 |
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| 摘 要： | 黑方台因农业灌溉触发了大量泥流滑坡。为了充分反映黑方台黄土泥流滑坡发育特征，首先基于IKONOS影像对黑方台泥流滑坡进行了遥感解译，随后又开展了详细野外调查工作。结果表明，黄土泥流滑坡呈流态化运移特征，滑距可达300 m以上，是黑方台危害最为严重的一类滑坡。钻探和塬边露头测量显示，研究区黄土底部黏土高程西高东低。地下水数值模拟结果显示，研究区地下水总体上由台塬西部流向地势较低的东部台缘，使得该处地下水抬升幅度要高于西部，从而造成泥流滑坡集中分布于东部台缘。为充分反映该条件下黄土泥流滑坡的破坏机制，开展了室内饱和原状黄土应力路径试验，分析研究了黄土泥流滑坡液化机制
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| 关 键 词： | 黄土泥流滑坡 农业灌溉 地下水运移模拟 室内力学试验 黑方台 |
| 收稿时间： | 2010-07-05 |
Topographic features and initiation of earth flows on Heifangtai loess plateau |
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| WU Cai-xia,XU Ling,DAI Fu-chu,MIN Hong,Tham, L.G.,Kwong,A.K.L.,ZHOU Yue-feng.Topographic features and initiation of earth flows on Heifangtai loess plateau[J].Rock and Soil Mechanics,2011,32(6):1767-1773. |
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| Authors: | WU Cai-xia XU Ling DAI Fu-chu MIN Hong Tham LG Kwong AKL ZHOU Yue-feng |
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| Institution: | 1. Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China; 2. Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China; 3. Faculty of Engineering, The University of Hong Kong, Hong Kong, China |
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| Abstract: | Agricultural irrigation on Heifangtai loess plateau has triggered dozens of loess earth flows.In this paper,IKONOS image was first used to interpret the topographic features of those earth flows,complimented with a detailed field-walk survey.The results indicated that loess earth flows had a travel distance of over 300m,constituting the most destructive threat.The failed material was deposited in a flow-like lobe form.The elevation of the underlying impermeable clay was measured from the outcrops and boreho... |
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| Keywords: | loess earth flow/landslide agricultural irrigation groundwater flow modeling laboratory tests Heifangtai |
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