摘要
南水北调中线工程按闸前常水位方式运行,分水口(退水闸)流量变化会引起渠道水位的波动,工程正常运行要求渠道水位下降速率不超过0.15 m/h。为了满足这一要求,构建南水北调中线工程一维水力学模型,分析分水口(退水闸)流量变化引起的渠池下节制闸闸前水位的变化过程,进而确定其敏感性。结果表明:同一渠池、同一工况下,不同分水口的敏感性不同;渠道流量越大,分水口的敏感性越小。但是不同渠道流量下的分水口敏感性差异极小,在实际运行中可忽略其影响,用不同渠道流量下的敏感性平均值来最终表征敏感性。
Constant downstream depth operation is used in the Middle Route of South to North Water Diversion Project. Water levels in openchannel fluctuate along with the change of the discharge that is caused by the turnout. The impact can be characterized by sensitivity. The project requires channel water level drop rate no more than 0. 15 m per hour in normal condition. In order to keep the water level of channels in the turnout flow change can satisfy this requirement, it studied and confirmed the sensitivity through building 1-D hydrodynamic model of South to North Water Diversion Project and studied the change process of water level before the check gate that was caused by discharge change of the turnout. The result shows that in the same open channel and conditions, different turnouts have different sensitivity and the more discharge of channel, the less sensitivity of the turnout. But the sensitivity difference in different channel flows is so small that can be ignored in actual run.
作者
吴怡
郑和震
雷晓辉
王澈
WU Yi;ZHENG Hezhen;LEI Xiaohui;WANG Che(Institute of Architecture and Engineering,Beijing University of Technology,Beijing 100124,China;Zhejiang University,Hangzhou 310058,China;China Institute of Water Resources and Hydropower Research,Beijing 100038,China;Zhuhai Division,China Harbor Engineering Co.,Ltd.,Zhuhai 519060,China)
出处
《人民黄河》
CAS
北大核心
2018年第7期121-123,128,共4页
Yellow River
基金
"十二五"国家科技支撑计划项目(2015BAB07B03)
流域水循环模拟与调控国家重点实验室代表性成果培育课题(2016CG05)
关键词
分水口
敏感性
流量变化
渠道水位
南水北调中线工程
turnout
sensitivity
discharge change
water level of channel
Middle Route of South-to-North Water Diversion Project