A study on compressibility and permeability of tailings with different particle sizes under high pressure
文献类型：期刊论文
| 作者 | Ma, Changkun1,2; Li, Ruixin3; Zhang, Chao2; Guo, Xiaogang2; Li, Xueting2 |
| 刊名 | BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
 |
| 出版日期 | 2023-04-01 |
| 卷号 | 82期号:4页码:- |
| 关键词 | Tailings High pressure Compressibility Permeability Microscopic critical value |
| ISSN号 | 1435-9529 |
| 英文摘要 | Mine tailings are stored in tailings storage facilities (TSF), normally in the form of tailings dams. High-stacked tailings dams (HTD) are failure-prone for several reasons, such as overtopping, seepage failure, and strength deterioration. The investigation of compressibility and permeability of tailings material with different particle sizes under high pressure is essential for safety stability. By self-developed high-pressure consolidation permeability apparatus (HCPA), the laboratory conjoined consolidation permeability tests are carried out on tailings with different particle sizes at the maximum consolidation pressure (sigma'(v)) of 5 MPa. For compressibility of tailings in the high-pressure stage (sigma'(v) > 2 MPa), the void ratio e of tailings with different particle sizes has a new linear relationship with sigma'(v). Coarse-grained tailings have a secondary- compression-like property due to particle breakage under high pressure. The hydraulic conductivity of tailings under high pressure presents a piecewise linear k-sigma'(v) relationship. With the decrease in particle size and the increase of sigma'(v), the seepage pattern of tailings changes from channel seepage to micropore seepage. sigma'(v) = 2 MPa is regarded as the critical value for high-pressure compression of tailing, and the corresponding microscopic critical value of the average particle spacing is 1.2-1.8 nm. This research explored useful information on the compressibility and permeability of tailings with different particle sizes under high pressure that can provide a reference for improving the stabilization of HTD. |
| 学科主题 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000943642200002 |
| 出版者 | SPRINGER HEIDELBERG |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35138]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.University of Chinese Academy of Sciences, Beijing 100049, China 2.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, Hubei, China 3.State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430071, Hubei, China |
| 推荐引用方式 GB/T 7714 | Ma, Changkun,Li, Ruixin,Zhang, Chao,et al. A study on compressibility and permeability of tailings with different particle sizes under high pressure[J]. BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,2023,82(4):-. |
| APA | Ma, Changkun,Li, Ruixin,Zhang, Chao,Guo, Xiaogang,&Li, Xueting.(2023).A study on compressibility and permeability of tailings with different particle sizes under high pressure.BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,82(4),-. |
| MLA | Ma, Changkun,et al."A study on compressibility and permeability of tailings with different particle sizes under high pressure".BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT 82.4(2023):-. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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