Laboratory study on soil behavior in loess slope subjected to infiltration
文献类型：期刊论文
| 作者 | Zhou, Y. F.1,2; Tham, L. G.2; Yan, W. M.2; Dai, F. C.3; Xu, L.3 |
| 刊名 | ENGINEERING GEOLOGY
 |
| 出版日期 | 2014-12-09 |
| 卷号 | 183页码:31-38 |
| ISSN号 | 0013-7952 |
| 关键词 | Landslide Infiltration Loess Unsaturated soil Stress path Constant load |
| DOI | 10.1016/j.enggeo.2014.09.010 |
| 文献子类 | Article |
| 英文摘要 | In recent years, Heifangtai Plateau in Gansu Province, China, has received significant attention as a loess region in which landslides frequently occur. This study aims to examine the soil behavior and failure mechanism(s) of loess slopes subjected to water infiltration. High-quality samples were retrieved behind the failure plane of a landslide in Heifangtai. Three sets of stress path tests were conducted to mimic the process of loess slope failures; these tests include undrained compression on anisotropically consolidated saturated samples, drained shear by decreasing mean effective stress at constant axial load on saturated samples, and wetting by decreasing matric suction at constant axial load on unsaturated samples. Loess behavior was evaluated in terms of shear strength, deformation upon shearing, critical state, state parameter, and soil water characteristic curve. Three major observations were drawn from the test results. First the anisotropically consolidated saturated loess exhibits a noticeable strain-softening behavior upon undrained compression. The peak shear strength is mobilized at less than 1% axial strain. The ultimate shear strength is only 20-30% of the peak value. Second, when subjected to shear by decreasing mean effective stress at constant axial load, the saturated loess exhibits sudden failure when the confining stress is low. At higher stresses, the soil exhibits progressive failure. Third, unsaturated loess deforms progressively when subjected to a reduction in matric suction (i.e., wetting) at constant axial load. The failure mechanisms of the loess slopes are discussed based on the experimental findings. (C) 2014 Elsevier B.V. All rights reserved. |
| WOS关键词 | WATER CHARACTERISTICS ; SHEAR-STRENGTH ; GRANULAR SOILS ; IRRIGATION ; LANDSLIDES ; STABILITY ; CURVE ; CHINA ; INSTABILITY ; FAILURES |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE BV |
| WOS记录号 | WOS:000347591200003 |
| 资助机构 | Research Grants Council of the Hong Kong Special Administrative Region(HKU7140/08E ; Research Grants Council of the Hong Kong Special Administrative Region(HKU7140/08E ; HKUST9/CRF/09 ; HKUST9/CRF/09 ; HKUST6/CRF/12R) ; HKUST6/CRF/12R) ; Research Grants Council of the Hong Kong Special Administrative Region(HKU7140/08E ; Research Grants Council of the Hong Kong Special Administrative Region(HKU7140/08E ; HKUST9/CRF/09 ; HKUST9/CRF/09 ; HKUST6/CRF/12R) ; HKUST6/CRF/12R) ; Research Grants Council of the Hong Kong Special Administrative Region(HKU7140/08E ; Research Grants Council of the Hong Kong Special Administrative Region(HKU7140/08E ; HKUST9/CRF/09 ; HKUST9/CRF/09 ; HKUST6/CRF/12R) ; HKUST6/CRF/12R) ; Research Grants Council of the Hong Kong Special Administrative Region(HKU7140/08E ; Research Grants Council of the Hong Kong Special Administrative Region(HKU7140/08E ; HKUST9/CRF/09 ; HKUST9/CRF/09 ; HKUST6/CRF/12R) ; HKUST6/CRF/12R) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/86394]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Zhou, Y. F. |
| 作者单位 | 1.Minist Water Resources, Changjiang River Sci Res Inst, Key Lab Geotech Mech & Engn, Wuhan 430010, Peoples R China 2.Univ Hong Kong, Dept Civil Engn, Hong Kong, Hong Kong, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, Y. F.,Tham, L. G.,Yan, W. M.,et al. Laboratory study on soil behavior in loess slope subjected to infiltration[J]. ENGINEERING GEOLOGY,2014,183:31-38. |
| APA | Zhou, Y. F.,Tham, L. G.,Yan, W. M.,Dai, F. C.,&Xu, L..(2014).Laboratory study on soil behavior in loess slope subjected to infiltration.ENGINEERING GEOLOGY,183,31-38. |
| MLA | Zhou, Y. F.,et al."Laboratory study on soil behavior in loess slope subjected to infiltration".ENGINEERING GEOLOGY 183(2014):31-38. |
入库方式： OAI收割
来源：地质与地球物理研究所
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