Effect of slope gradient on the subsurface water flow velocity of sand layer profile
文献类型：期刊论文
| 作者 | Han Zhen; Chen Xiao-yan; Huang Yu-han; Luo Bang-lin; Xing Hang; Huang Yong-chao |
| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
 |
| 出版日期 | 2020 |
| 卷号 | 17期号:3页码:641-652 |
| 关键词 | Subsurface water flow Pore water velocity Seepage velocity Slope gradient Sand layer |
| ISSN号 | 1672-6316 |
| DOI | 10.1007/s11629-019-5644-z |
| 文献子类 | Article |
| 英文摘要 | Subsurface water flow velocity influences the hydrodynamic characteristics of soil seepage and the interaction between subsurface water flow and surface runoff during soil erosion and sediment transport. A visualized method and equipment was adopted in this study to observe the subsurface water flow. Quartz sand was used as the test material of subsurface water flow and fluorescent dye was used as the indicator for tracing subsurface water flow. Water was supplied at the same flow discharge to the three parts at the bottom of the test flume, and the subsurface water flow were determined with four slope gradients (4 degrees, 8 degrees, 10 degrees, and 12 degrees). The results showed that the seepage velocity gradually increased with increasing slope gradient. The pore water velocity at different depths of sand layer profile increased with increasing slope gradient, whereas the thickness of the flow front gradually decreased. For the same slope gradient, the pore water velocity in the lower layer was the largest, whereas the thickness of the flow front was the smallest. Comparative analysis of the relationship between seepage velocity and pore water velocity at different depths of sand layer profile showed that the maximum relative difference between the measured pore water velocity and the computational pore water velocity at different depths of sand profile in the experiment was 4.38%. Thus, the test method for measuring the subsurface water flow velocity of sand layer profile adopted in this study was effective and feasible. The development of this experiment and the exploration of research methods would lay a good test foundation for future studies on the variation law of subsurface water flow velocity and the determination of flow velocity in purple soils, thus contributing to the improvement of the hydrodynamic mechanism of purple soils. |
| 电子版国际标准刊号 | 1993-0321 |
| 语种 | 英语 |
| WOS记录号 | WOS:000519163500011 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/46783]  |
| 专题 | Journal of Mountain Science_Journal of Mountain Science-2020_Vol17 No.3 |
| 推荐引用方式 GB/T 7714 | Han Zhen,Chen Xiao-yan,Huang Yu-han,et al. Effect of slope gradient on the subsurface water flow velocity of sand layer profile[J]. JOURNAL OF MOUNTAIN SCIENCE,2020,17(3):641-652. |
| APA | Han Zhen,Chen Xiao-yan,Huang Yu-han,Luo Bang-lin,Xing Hang,&Huang Yong-chao.(2020).Effect of slope gradient on the subsurface water flow velocity of sand layer profile.JOURNAL OF MOUNTAIN SCIENCE,17(3),641-652. |
| MLA | Han Zhen,et al."Effect of slope gradient on the subsurface water flow velocity of sand layer profile".JOURNAL OF MOUNTAIN SCIENCE 17.3(2020):641-652. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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。