Mechanical properties of tailings with dipping interlayers under high confining pressure
文献类型：期刊论文
| 作者 | Chen, Qinglin; Li, Zugui; Dai, Zeyu; Wang, Xiaojun; Zhang, Chao |
| 刊名 | GEOMECHANICS AND ENGINEERING
 |
| 出版日期 | 2022-12-25 |
| 卷号 | 31期号:6页码:557 |
| 关键词 | critical state deformation patterns fine-grained interlayer high confining pressure tailings |
| ISSN号 | 2005-307X |
| 英文摘要 | Landslides are often triggered by weak interlayers initiated in tailings dam foundations, and hazards gradually occur. This is serious for landslides in high tailings dams due to their high potential energy. Tailing samples with a fine-grained interlayer at a set dip angle were prepared. Consolidated undrained (CU) triaxial shear tests were carried out by using a high-pressure triaxial apparatus. The results were compared with the results under a low confining pressure. Four reasons were summarized for high tailings dams more prone to instability than low dams. The shear strength of the samples with dipping interlayers decreases with increasing dip angle. An obvious straight drop in the stress path after the peak occurs in samples with dipping interlayers at an angle of 60 degrees. The effect of the interlayer on the mechanical behaviour of tailings is very sensitive, especially for the sample with a dipping interlayer at an angle of 60 degrees. Shear slipping along the interlayer should be given more attention in tailings dams. Compared with the results under low confining pressure, the stress decreases continuously for the samples with dipping interlayers at large angles under high confining pressure. The positive pore pressure, which reduces the effective stress, occurred in tailings samples under high confining pressure. The residual strength of tailings under high confining pressure is smaller than that under low confining pressure. These factors increase the dam break risk and the disaster impact for high tailings dams. |
| 学科主题 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000906795200002 |
| 出版者 | TECHNO-PRESS |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/34821]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Jiangxi University of Science & Technology; 2.Chinese Academy of Sciences; Wuhan Institute of Rock & Soil Mechanics, CAS |
| 推荐引用方式 GB/T 7714 | Chen, Qinglin,Li, Zugui,Dai, Zeyu,et al. Mechanical properties of tailings with dipping interlayers under high confining pressure[J]. GEOMECHANICS AND ENGINEERING,2022,31(6):557. |
| APA | Chen, Qinglin,Li, Zugui,Dai, Zeyu,Wang, Xiaojun,&Zhang, Chao.(2022).Mechanical properties of tailings with dipping interlayers under high confining pressure.GEOMECHANICS AND ENGINEERING,31(6),557. |
| MLA | Chen, Qinglin,et al."Mechanical properties of tailings with dipping interlayers under high confining pressure".GEOMECHANICS AND ENGINEERING 31.6(2022):557. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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