Creep behavior of boom clay
文献类型：期刊论文
| 作者 | Yu, H. D.1; Chen, W. Z.1,2; Gong, Z.1; Tan, X. J.1; Ma, Y. S.1; Li, X. L.3; Sillen, X.4 |
| 刊名 | INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
 |
| 出版日期 | 2015 |
| 卷号 | 76页码:256-264 |
| 关键词 | Boom clay Creep Tests Creep rate |
| ISSN号 | 1365-1609 |
| DOI | 10.1016/j.ijrmms.2015.03.009 |
| 英文摘要 | Several creep tests (lasting more than one year) were performed to study the delayed mechanical behavior of Boom clay under the hydro-mechanical coupling effect. To prevent the soil from swelling as much as possible during re-saturation, the samples were submitted to a confining pressure close to the in situ effective mean stress (2.5 MPa) at a room temperature of 21 degrees C. However, certain swelling still exists at the beginning or the saturation. Creep tests further highlight the creep potential of Boom clay. Delayed behavior became more and more significant as the deviatoric stress increased. A deviatoric stress threshold (approximately 1.0 MPa), below which only primary creep occurred, was proved to exist from the development of secondary and tertiary creep phases during the creep tests. If we introduce a quasi-steady state creep rate, i.e., the average creep rate after the creep deformation becoming stable, it can be found that the quasi-steady state creep rate of Boom clay is on the order of 10(-6) epsilon/h under low deviatoric stress (1.5 MPa) in the laboratory, which is on the same order as the average creep rate of the in situ measurements in the second year (1988). However, in situ measurements show that steady creep state of the host rock was not reached even after five years. The in situ quasi-steady state diameter reduction rate calculated from the average of 10 years (1996-2006) of stable deformation of the tunnel linings is on the order of 10(-8) epsilon/h. (C) 2015 Elsevier Ltd. All rights reserved. |
| WOS研究方向 | Engineering ; Mining & Mineral Processing |
| 语种 | 英语 |
| WOS记录号 | WOS:000353476900027 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/3722]  |
| 专题 | 岩土力学所知识全产出_期刊论文 国家重点实验室知识产出_期刊论文 |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; 2.Shandong Univ, Res Ctr Geotech & Struct Engn ; 3.CEN SCK, Euridice, Belgian Nucl Res Ctr; 4.Belgian Agcy Radioact Waste & Enriched Fissile Ma |
| 推荐引用方式 GB/T 7714 | Yu, H. D.,Chen, W. Z.,Gong, Z.,et al. Creep behavior of boom clay[J]. INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES,2015,76:256-264. |
| APA | Yu, H. D..,Chen, W. Z..,Gong, Z..,Tan, X. J..,Ma, Y. S..,...&Sillen, X..(2015).Creep behavior of boom clay.INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES,76,256-264. |
| MLA | Yu, H. D.,et al."Creep behavior of boom clay".INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES 76(2015):256-264. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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