
马甸枢纽船闸引航道口门区水流特性数值分析
赵泱军, 苏叶平, 丁浩, 王振华, 杨天立, 杨帆
马甸枢纽船闸引航道口门区水流特性数值分析
Numerical Analysis of the Water Flow Characteristics of the Port Gate Area of the Madian Hub Locks
为明确马甸水利枢纽建成后节制闸、引水泵站运行对船闸引航道口门区通航水流条件的影响情况,采用SMS(Surface grater Modeling System)水动力学软件对3种不同运行工况时船闸上、下游引航道的口门区流场特征进行数值分析。结果表明:在马甸枢纽工程中,节制闸排涝校核工况时,船闸上引航道口门区水流条件均较好,下游引航道口门区局部范围存在横向流速较大的情况;在节制闸引水校核工况时,上游引航道口门区局部范围横向流速不满足要求,船闸下游引航道的口门区水流条件较好。在泵站引水工况时,船闸上、下游引航道靠近泵站侧的隔水墙末端附近均存在部分斜向水流,建议在上、下游引航道隔水墙末端增加弧立式隔流设施。所得结论为马甸枢纽工程运行提供了一定的参考。
In order to clarify the influence of the operation of the sluice gate and the diversion pump station on the navigation flow conditions in the entrance area of the ship lock approach channel after the completion of the Madian Water Control Project, the SMS(Surface grater Modeling System)hydrodynamic software was used to numerically analyze the flow field characteristics in the entrance area of the upstream and downstream approach channels of the ship lock under three different operating conditions. The results show that in the Madian hydro-junction project, the flow conditions in the upper approach channel entrance area of the lock are good under the check condition of the flood discharge of the lock, and there is a large lateral velocity in the local area of the downstream approach channel entrance area. In the check condition of lock diversion, the lateral velocity in the local area of the upstream approach channel entrance does not meet the requirements, and the flow condition in the downstream approach channel entrance is good. In the water diversion condition of the pump station, there are some oblique flow near the end of the water partition wall near the side of the pump station in the upstream and downstream approach channel of the lock. It is suggested to increase the arc vertical separation facilities at the end of the water partition wall of the upstream and downstream approach channel. The conclusions provide a certain reference for the operation of Madian hub project.
马甸枢纽 / 船闸 / 口门区 / 数值模拟 / 通航水流条件 {{custom_keyword}} /
Madian hub project / ship lock / entrance region / numerical simulation / flow condition {{custom_keyword}} /
表1 不同工况计算参数表Tab.1 Calculation parameter table for different working conditions |
工况 | 流量/(m3·s-1) | 上游河道水位/m | 游河道水位/m | 备 注 |
---|---|---|---|---|
1 | 270 | 3.59 | 1.10 | 节制闸排涝校核工况 |
2 | 270 | 1.70 | 3.88 | 节制闸引水校核工况 |
3 | 60 | 1.30 | 0 | 泵站引水工况 |
图3 上游引航道口门区各测点布置及速度分布(节制闸运行)Fig.3 Layout and velocity distribution of each measuring point in the entrance area of upstream approach channel ( control gate operation) |
图5 上游引航道口门区各测点布置及速度分布(泵站运行)Fig.5 Layout and velocity distribution of measuring points in the entrance area of upstream approach channel ( pump station operation ) |
图7 下游引航道口门区各测点布置及速度分布(节制闸运行)Fig.7 Layout and velocity distribution of measuring points in the entrance area of downstream approach channel ( control gate operation ) |
图9 下游引航道口门区各测点布置及速度分布(泵站运行)Fig.9 Layout and velocity distribution of measuring points in the entrance area of downstream approach channel ( pumping station operation) |
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