دورية أكاديمية
Numerical simulation of soil water movement by gravity subsurface hole irrigation
| العنوان: | Numerical simulation of soil water movement by gravity subsurface hole irrigation |
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| المؤلفون: | Yanwei Fan, Chunyan Zhu, Guilin Bai, Tianhua Ma, Zhenchang Wang |
| المصدر: | Water Supply, Vol 22, Iss 7, Pp 6389-6404 (2022) |
| بيانات النشر: | IWA Publishing, 2022. |
| سنة النشر: | 2022 |
| المجموعة: | LCC:Water supply for domestic and industrial purposes LCC:River, lake, and water-supply engineering (General) |
| مصطلحات موضوعية: | gravity subsurface hole irrigation, hydrus-2d/3d, influencing factor, soil cumulative infiltration volume, soil wetting pattern size, Water supply for domestic and industrial purposes, TD201-500, River, lake, and water-supply engineering (General), TC401-506 |
| الوصف: | 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), and changes under different combinations of saturated hydraulic conductivity (Ks), infiltrating hole diameter (D), infiltrating pipe depth (B), matric potential (Ψm), and infiltration time (T). The results indicated that when Ks, D, B, and T increased, I also increased, while Ψm increased and I decreased. In addition, when I and Ψm increase, W increases. However, when D and B increase, W decreases. Ks promotes W in a vertical downward direction but inhibits W in the vertically 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. HIGHLIGHTS A new technology of rainwater harvesting and irrigation saving for arid and semi-arid areas was designed.; A soil water transport model for designers and irrigation users was established.; The model was validated by experimental data, and the prediction effect was good.; |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1606-9749 1607-0798 |
| Relation: | http://ws.iwaponline.com/content/22/7/6389; https://doaj.org/toc/1606-9749; https://doaj.org/toc/1607-0798 |
| DOI: | 10.2166/ws.2022.221 |
| URL الوصول: | https://doaj.org/article/8002ab0c8d65415e9445bd3738897821 |
| رقم الأكسشن: | edsdoj.8002ab0c8d65415e9445bd3738897821 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 16069749 16070798 |
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| DOI: | 10.2166/ws.2022.221 |