Discrete element model for moisture diffusion of rocks during water absorption
文献类型：期刊论文
| 作者 | Chen, Yanan1,2; Bian, Kang1,2; Zhang, Wei3; Liu, Jian1,2; Ai, Fei1,2; Liu, Zhenping1,2; Chen, Lin1,2 |
| 刊名 | COMPUTERS AND GEOTECHNICS
 |
| 出版日期 | 2023-04-01 |
| 卷号 | 156期号:-页码:- |
| ISSN号 | 0266-352X |
| 关键词 | DEM Water absorption of rock Water saturation coefficient Moisture diffusion Numerical model |
| 英文摘要 | Rock masses in a water-rich environment often destabilize due to the water-softening effect; therefore, identifying the migration and diffusion of water in rock is critical. Most current simulations of water migration in rocks rely on grids and driving conditions, which limit the practical application of numerical models. This paper presents a discrete element model to quantify the moisture diffusion processes in rock based on diffusion theory. In the model, the particles are divided into particle elements by the radial-Voronoi method, and moisture is assumed to transfer between the pores of these particle elements. Soaking tests are conducted to determine the natural water absorption properties of rock and to verify the rationality of the DEM. By using the proposed DEM, the effects of the diffusion coefficient and particle size are studied. The results show that the diffusion coefficient affects the saturation velocity but does not affect the water distribution at the same saturation states, while particle size and pore structure heterogeneity can influence the water distribution. The proposed model greatly exploits the properties of discrete contact networks in the DEM, which will lead to better computational efficiency and applicability for simulations of water migration in rocks. |
| 学科主题 | Computer Science ; Engineering ; Geology |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCI LTD |
| WOS记录号 | WOS:000924395000001 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35219]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.University of Chinese Academy of Science, Beijing 100049, China 2.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China 3.College of Water Conservancy and Civil Engineering, South China Agricultural University, Guangzhou 510642, China |
| 推荐引用方式 GB/T 7714 | Chen, Yanan,Bian, Kang,Zhang, Wei,et al. Discrete element model for moisture diffusion of rocks during water absorption[J]. COMPUTERS AND GEOTECHNICS,2023,156(-):-. |
| APA | Chen, Yanan.,Bian, Kang.,Zhang, Wei.,Liu, Jian.,Ai, Fei.,...&Chen, Lin.(2023).Discrete element model for moisture diffusion of rocks during water absorption.COMPUTERS AND GEOTECHNICS,156(-),-. |
| MLA | Chen, Yanan,et al."Discrete element model for moisture diffusion of rocks during water absorption".COMPUTERS AND GEOTECHNICS 156.-(2023):-. |
入库方式： OAI收割
来源：武汉岩土力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。