Numerical simulation of soil water movement by gravity subsurface hole irrigation

doi:10.2166/ws.2022.221

	Numerical simulation of soil water movement by gravity subsurface hole irrigation
	Fan, Yanwei 2; Zhu, Chunyan 2; Bai, Guilin 3; Ma, Tianhua 2; Wang, Zhenchang 1
刊名	WATER SUPPLY
	2022-06-01
关键词	gravity subsurface hole irrigation HYDRUS-2D 3D influencing factor soil cumulative infiltration volume soil wetting pattern size
ISSN号	1606-9749
DOI	10.2166/ws.2022.221
英文摘要	Aridity and soil erosion are two bottlenecks restricting the sustainable development of the Loess Plateau and are also fundamental reasons for the ecological fragility of the region. A gravity subsurface hole irrigation system was proposed to regulate rainfall-runoff, achieve rainwater stylization, and reduce soil erosion. Based on HYDRUS-2D/3D, a mathematical model of soil water movement under gravity subsurface hole irrigation was created. Thirty-five scenarios were designed to analyze five cumulative infiltration volumes (I) and wetting front migration distance (W). Changes under different combinations of saturated hydraulic conductivity (K-s), infiltrating hole diameter (D), infiltrating pipe depth (B), matrix potential (psi(m)), and infiltration time (T). The results indicated that when K-s, D, B, and T increased, 'I' also increased, while psi(m) increased and 'I' decreased. In addition, when 'I' and psi(m) increase, 'W' increases. However, when D and B increase, 'W' decreases. K-s promotes 'W' in a vertically downward direction but inhibits 'W' in the vertical upward and horizontal directions. The simulation results established the 'I' estimation model and the 'W' estimation model (power function continuous multiplication form). There was acceptable uniformity among the predicted and measured values, and its reliability was verified experimentally.
WOS研究方向	Engineering ; Environmental Sciences & Ecology ; Water Resources
语种	英语
出版者	IWA PUBLISHING
WOS记录号	WOS:000806408500001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/158925]
专题	能源与动力工程学院
作者单位	1.Hohai Univ, Coll Agr Sci & Engn, Nanjing 210000, Peoples R China 2.Lanzhou Univ Technol, Coll Energy & Power Engn, Lanzhou 730050, Peoples R China; 3.Gansu Forestry Polytech, Tianshui 741000, Peoples R China;
推荐引用方式 GB/T 7714	Fan, Yanwei,Zhu, Chunyan,Bai, Guilin,et al. Numerical simulation of soil water movement by gravity subsurface hole irrigation[J]. WATER SUPPLY,2022.
APA	Fan, Yanwei,Zhu, Chunyan,Bai, Guilin,Ma, Tianhua,&Wang, Zhenchang.(2022).Numerical simulation of soil water movement by gravity subsurface hole irrigation.WATER SUPPLY.
MLA	Fan, Yanwei,et al."Numerical simulation of soil water movement by gravity subsurface hole irrigation".WATER SUPPLY (2022).