引用本文:吴波,李文轩,傅陆志丹,赵宇航.双线互输水船闸剩余水头优化研究[J].水利水运工程学报,2018,(4):61-67
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双线互输水船闸剩余水头优化研究
吴波1,2, 李文轩1,2, 傅陆志丹1,2, 赵宇航1,2
1.南京水利科学研究院 通航建筑物建设技术交通行业重点实验室，江苏南京;2.南京水利科学研究院，江苏南京
摘要:
为定量分析双线互输水船闸剩余水头与船闸输水时间的关系，基于船闸输水系统非恒定总流能量方程和连续性方程，建立了一元船闸充、泄水数学模型。以广西长洲枢纽三、四线船闸为例，用原型观测数据验证了数学模型的可靠性。重点研究双线互输水船闸的输水系统水力学，揭示剩余水头与输水时间和省水率的关系。研究表明，随着剩余水头减小，船闸输水时间不断增加，同时因联通阀门关闭时间较长，在阀门关闭末期，充水闸室水位高于泄水闸室水位，从而出现倒流现象，船闸省水率增至05后又降低。故从省水角度出发，剩余水头取4 m为最优。综合考虑省水率与输水时间的矛盾，从而提出省水率与输水时间在剩余水头选取上的权重问题，为优化双线互输水船闸剩余水头提供参考。
关键词:  省水船闸  双线互输水船闸  剩余水头  省水率
DOI：
分类号:U641.1
基金项目:国家重点研发计划资助项目（2016YFC0402002, 2016YFC0402006）
Optimization study of residual head of mutual water filling and emptying double-line lock
WU Bo1,2, LI Wenxuan1,2, FU Luzhidan1,2, ZHAO Yuhang1,2
1.Key Laboratory of Navigation Structure Construction Technology of Ministry of Transport, Nanjing Hydraulic Research Institute, Nanjing;2.Nanjing Hydraulic Research Institute, Nanjing
Abstract:
In order to quantitatively analyze the relationships between the residual head and the water delivery time of the mutual water filling and emptying double-line navigation lock, a mathematical model for the navigation lock’s filling and emptying is developed on the basis of the unsteady flow energy equation and the continuity equation for the navigation lock’s filling and emptying system. Taking Changzhou navigation locks No.3 & 4 as an example, the reliability of the mathematical model is verified by the prototype observation data. This research is focused on the hydraulics concerning the mutual water filling and emptying system of the double-line navigation lock and the relationships between the residual head, water delivery time and the rate of water saving are revealed. The research results indicate that with the decrease of the residual water head, the water filling time of the ship lock increases constantly. Meanwhile, as the closing time of the unicom valve is pretty long, at the end of the closing period, the water level of the filling water lock chamber is higher than that of the emptying water lock chamber, resulting in the phenomenon of back flow, and the water saving rate of the navigation lock increases to 0.5 and then to a lower value. Therefore, from the point of water saving, the residual head value of 4 m is the best. Considering the contradiction between the water saving rate and the water filling time, the weight problem of the water filling time and the water saving rate in the selection of the residual water head is put forward, which can provide a reference for the optimization of the residual head of the mutual water filling and emptying double-line navigation lock.
Key words:  water saving navigation lock  mutual water filling and emptying double-line lock  residual head  rate of water saving
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