| 引用本文: | 龚志浩,蒋晓红,吴伟峰,等.开敞式低压管灌系统调压井设计顶高程确定方法及其应用[J].灌溉排水学报,2019,38(5):73-78. |
| GONG Zhihao,JIANG Xiaohong,WU Weifeng,et al.开敞式低压管灌系统调压井设计顶高程确定方法及其应用[J].灌溉排水学报,2019,38(5):73-78. |
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| 摘要: |
| 【目的】提高开敞式低压管灌系统设计的可靠性，提出合理确定调压井（泵站出水池）顶高程的具体方法。【方法】基于水量平衡和能量守恒方程，通过模拟系统所有可能的运行工况，寻找各井（池）内可能出现的最高水位，从而确定井（池）的设计顶高程。将该方法应用于上海市青浦区的南崧灌区。【结果】模拟获得的调压井水位为4.18~4.49 m，确定的调压井设计顶高程为4.8~5.0 m，满足系统运行要求。【结论】该方法以系统运行工况的模拟数据为依据，确定的调压井顶高程合理可靠，可应用于生产实践。 |
| 关键词: 低压管灌； 调压井； 顶高程； 水位； 运行工况； 模拟 |
| DOI：10.13522/j.cnki.ggps.20180676 |
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| A Method to Determine the Crest Level in the Surge-preventing Shaft in Irrigation Network with Open Pipe Conveyances |
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GONG Zhihao, JIANG Xiaohong, WU Weifeng, CHEN Yan
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1. Yangzhou University, Yangzhou 225009, China; 2. Shanghai Water Conservancy Management Agency, Shanghai 200002, China
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| Abstract: |
| 【Objective】 The purpose of this paper is to present a method to improve determination of the crest level in the surge-preventing shaft in irrigation systems with open pipe conveyances. 【Method】 The method was based on the principle of water balance and energy conservation, in which we maximized the water level in the tank to derive the crest level by simulating the irrigation system under all possible operation conditions. We validated the method against a low-pressure pipe irrigation system at Qingpu irrigation district in Shanghai, China.【Result】 The water level in the surge-preventing shafts obtained from the simulated results varied from 4.18 m to 4.49 m, it was comparable with the design crest level of 4.8m to 5.0m, meeting the operation requirement. 【Conclusion】 Testing the proposed method against a real irrigation system revealed that the calculated crest level in the surge-preventing shaft was appropriate and reliable . |
| Key words: low-pressure pipe irrigation; surge shaft; crest level; water level; operation condition; simulation |
