Numerical investigation of the influence of banded sand ditches on water infiltration in fine-textured soil

doi:10.2166/wst.2022.140

	Numerical investigation of the influence of banded sand ditches on water infiltration in fine-textured soil
	Fan, Yanwei; Zhang, Changyan; Wei, Hujun; Shi, Wen
	2022-05-01
发表期刊	WATER SCIENCE AND TECHNOLOGY
ISSN	0273-1223
卷号	85 期号:9 页码:2693-2709
摘要	Enhancing rainwater infiltration is important to reduce the risk of urban waterlogging and improve the utilization rate of urban rainwater resources. Using the HYDRUS model, a mathematical model of soil water movement under a banded sand ditch pattern (the vertical excavation of a deep trench with heavy soil and filled with light soil) was created. Forty-six scenarios were designed to examine effects of sand ditch soil saturated hydraulic conductivity (K-ss), original homogenous fine-textured soil saturated hydraulic conductivity (K-so), sand ditch width (W), spacing (S), and depth (D) on the soil infiltration rate (i). Results indicate that banded sand ditches cause increased permeation and have a significant turning point 't(0)' in the curve of 'i' for 't.' Taking 't(0)' as the boundary, 'i' can be divided into two stages (t <= t(0) and t > t(0)), 'i' and 't,' for each stage according to the power function relationship; there is little change in power function indices, which can be fixed at 0.34 and 0.63, respectively. In addition, the coefficient has a linear relationship with K-ss, K-so, W, S, and D. Thus, an estimation model of the soil infiltration rate under a banded sand ditch pattern was proposed and verified for reliability.
关键词	banded sand ditch HYDRUS simplified infiltration model water infiltration
DOI	10.2166/wst.2022.140
收录类别	SCIE ; EI
语种	英语
WOS研究方向	Engineering ; Environmental Sciences & Ecology ; Water Resources
WOS类目	Engineering, Environmental ; Environmental Sciences ; Water Resources
WOS记录号	WOS:000786194000001
出版者	IWA PUBLISHING
EI入藏号	20222212176933
EI主题词	Sand
EI分类号	483.1 Soils and Soil Mechanics632.1 Hydraulics
来源库	WOS
引用统计	被引频次[WOS]：0 [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/158515
专题	能源与动力工程学院
通讯作者	Fan, Yanwei
作者单位	Lanzhou Univ Technol, Coll Energy & Power Engn, Lanzhou 730050, Peoples R China
第一作者单位	能源与动力工程学院
通讯作者单位	能源与动力工程学院
第一作者的第一单位	能源与动力工程学院
推荐引用方式 GB/T 7714	Fan, Yanwei,Zhang, Changyan,Wei, Hujun,et al. Numerical investigation of the influence of banded sand ditches on water infiltration in fine-textured soil[J]. WATER SCIENCE AND TECHNOLOGY,2022,85(9):2693-2709.
APA	Fan, Yanwei,Zhang, Changyan,Wei, Hujun,&Shi, Wen.(2022).Numerical investigation of the influence of banded sand ditches on water infiltration in fine-textured soil.WATER SCIENCE AND TECHNOLOGY,85(9),2693-2709.
MLA	Fan, Yanwei,et al."Numerical investigation of the influence of banded sand ditches on water infiltration in fine-textured soil".WATER SCIENCE AND TECHNOLOGY 85.9(2022):2693-2709.