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Simulation of Rainfall-Runoff Process in a Catchment with a Check-Dam System Equipped with a Perforated Riser Principal Spillway on the Loess Plateau of China

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State Key Laboratory of Eco-Hydraulics in Northwest Arid Region of China, Xi’an University of Technology, Xi’an 710048, China
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School of Civil Engineering, Xijing University, Xi’an 710123, China
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State Key Laboratory of Soil Erosion and Dry-Land Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100, China
*
Author to whom correspondence should be addressed.
Academic Editor: Marco Franchini
Water 2021, 13(17), 2450; https://doi.org/10.3390/w13172450
Received: 14 June 2021 / Revised: 30 August 2021 / Accepted: 31 August 2021 / Published: 6 September 2021
(This article belongs to the Section Hydraulics and Hydrodynamics)
Check dams are applied worldwide as an effective approach for soil and water conservation. To improve the simulation accuracy of the hydrological processes in a catchment with a check-dam system, this study analyzed the applicability and accuracy of a formula for the drainage process of a perforated riser principal spillway based on observational experiments. The rainfall-runoff processes in a catchment with a check-dam system were also simulated with the recommended formulas for the drainage process of a perforated riser principal spillway. The deviations in the calculated discharge from the observed values of the experiment with the recommended formulas under normal and abnormal working conditions were within ±15% and ±5%, respectively. The hydrologic model used in this study needed only a few parameters to achieve a satisfactory simulation accuracy. The recommended formulas for the drainage process of a perforated riser principal spillway can improve the simulation accuracy of a flood peak by 7.42% and 19.58% compared with the accuracies of the technical code formula scenario and no drainage scenario, respectively. The results of this study are expected to provide a reference for flood warnings and safe operations of check-dam systems. View Full-Text
Keywords: check dam; discharge structure; drainage process; hydrologic model check dam; discharge structure; drainage process; hydrologic model
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MDPI and ACS Style

Zhang, Z.; Chai, J.; Yuan, S.; Li, Z.; Xu, Z. Simulation of Rainfall-Runoff Process in a Catchment with a Check-Dam System Equipped with a Perforated Riser Principal Spillway on the Loess Plateau of China. Water 2021, 13, 2450. https://doi.org/10.3390/w13172450

AMA Style

Zhang Z, Chai J, Yuan S, Li Z, Xu Z. Simulation of Rainfall-Runoff Process in a Catchment with a Check-Dam System Equipped with a Perforated Riser Principal Spillway on the Loess Plateau of China. Water. 2021; 13(17):2450. https://doi.org/10.3390/w13172450

Chicago/Turabian Style

Zhang, Zeyu, Junrui Chai, Shuilong Yuan, Zhanbin Li, and Zengguang Xu. 2021. "Simulation of Rainfall-Runoff Process in a Catchment with a Check-Dam System Equipped with a Perforated Riser Principal Spillway on the Loess Plateau of China" Water 13, no. 17: 2450. https://doi.org/10.3390/w13172450

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