Study on static and dynamic strength characteristics of tailings silty sand and its engineering application
文献类型：会议论文
| 作者 | Liu Hai-ming; Yang Chun-he; Zhang Chao; Mao Hai-jun |
| 出版日期 | 2012 |
| 会议日期 | OCT 26-29, 2011 |
| 会议地点 | Beijing, PEOPLES R CHINA |
| 关键词 | High tailings dam Tailings silty sand High-pressure triaxial test Dynamic triaxial test Liquefaction Safety factor |
| 卷号 | 50 |
| 期号 | 4 |
| DOI | 10.1016/j.ssci.2011.08.025 |
| 页码 | 828-834 |
| 英文摘要 | Through high pressure oedometer-undrained triaxial tests and dynamic triaxial tests, researches were conducted on the static and dynamic strength characteristics of the tailings silty sand of No. 4 tailings reservoir in De-xing copper mine. The Mohr-stress circles of the tailings silty sand under all the testing confining pressure show that the single line failure envelope cannot represent the strength characteristics absolutely, the double line failure envelope can express the strength properties when confining pressures are less than 1400 kPa, and the parabolic failure envelope can reflect the strength characteristics well under all the testing confining pressures. The grading curve of the tailings silty sand indicates that the grain composition is relatively homogeneous. Thus, the tailings silty sand is susceptible to liquefy under the dynamic loading. Dynamic triaxial tests of the tailings silty sand show that the tailings silty sand in deep areas has more liquefaction resistance strengths than in shallow. The possible explanation is that the structure of the deep tailings silty sand is more stable than the shallow one. The tests also reveal that the liquefaction resistance increases with the dry density when it is in the range of 1.51-1.61. The results can be used to guide the construction and ensure the safety of No. 4 tailings dam or other high tailings dams. (C) 2011 Elsevier Ltd. All rights reserved. |
| 会议录 | SAFETY SCIENCE
 |
| 会议录出版者 | ELSEVIER SCIENCE BV |
| 会议录出版地 | AMSTERDAM |
| 语种 | 英语 |
| WOS研究方向 | Engineering ; Operations Research & Management Science |
| WOS记录号 | WOS:000300960900042 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/4714]  |
| 专题 | 岩土力学所知识全产出_会议论文 国家重点实验室知识产出_会议论文 |
| 作者单位 | Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn |
| 推荐引用方式 GB/T 7714 | Liu Hai-ming,Yang Chun-he,Zhang Chao,et al. Study on static and dynamic strength characteristics of tailings silty sand and its engineering application[C]. 见:. Beijing, PEOPLES R CHINA. OCT 26-29, 2011. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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