Influence of particle size scale on mechanical properties of tailings under high pressure
文献类型：期刊论文
| 作者 | Pan, Zhenkai; Zhang, Chao; Guo, Xiaogang; Ma, Changkun; Ma, Lei; Gan, Shucheng |
| 刊名 | PROCEEDINGS OF THE INSTITUTION OF CIVIL ENGINEERS-GEOTECHNICAL ENGINEERING
 |
| 出版日期 | 2022-04-01 |
| 卷号 | 175期号:2页码:200 |
| 关键词 | geology geotechnical engineering granular materials |
| ISSN号 | 1353-2618 |
| 英文摘要 | Particle size has an effect on the mechanical properties of tailings materials. The mechanics and crushing characteristics of tailings at high pressure are a research focus for high tailings dams. Tailings with different particle sizes were tested under laboratory high-pressure triaxial compression. The effect of particle size on the compression characteristics of tailings was studied, along with the strength and deformation of tailings with different particle sizes. Based on particle size distribution, the crushing characteristics of the tailings were quantitatively analysed. A mathematical model for crushing index and tailings strength was established. Under high pressure, shearing contraction failure occurred in the tailings samples. The stress-strain relation of the tailings showed strain softening at low confining pressure and continuous hardening at high confining pressure. The confining pressure at which the stress-strain relation changed from strain softening to strain hardening increased with increased particle size. Due to the higher degree of particle crushing for coarse tailings during the shearing under high pressure, the volume deformation of the coarse samples decreases continuously further. It shows increase in the amount of particle breakage as the confining pressure, but the increase rate decreased with the confining pressure increased. The Box Lucas loading accumulation model was used to describe the change in particle breakage with confining pressure. The peak strength of tailings increased exponentially with the improved relative crushing rate. |
| 学科主题 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000784172300006 |
| 出版者 | ICE PUBLISHING |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35050]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; 2.Chinese Academy of Sciences; Wuhan Institute of Rock & Soil Mechanics, CAS; 3.Chongqing University |
| 推荐引用方式 GB/T 7714 | Pan, Zhenkai,Zhang, Chao,Guo, Xiaogang,et al. Influence of particle size scale on mechanical properties of tailings under high pressure[J]. PROCEEDINGS OF THE INSTITUTION OF CIVIL ENGINEERS-GEOTECHNICAL ENGINEERING,2022,175(2):200. |
| APA | Pan, Zhenkai,Zhang, Chao,Guo, Xiaogang,Ma, Changkun,Ma, Lei,&Gan, Shucheng.(2022).Influence of particle size scale on mechanical properties of tailings under high pressure.PROCEEDINGS OF THE INSTITUTION OF CIVIL ENGINEERS-GEOTECHNICAL ENGINEERING,175(2),200. |
| MLA | Pan, Zhenkai,et al."Influence of particle size scale on mechanical properties of tailings under high pressure".PROCEEDINGS OF THE INSTITUTION OF CIVIL ENGINEERS-GEOTECHNICAL ENGINEERING 175.2(2022):200. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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