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In order to explore the cause of the flow pattern problem in the forebay of the pumping station at the diversion operating condition in Taihuzhuangyuan in Changzhou City, and find the corresponding solution, the three-dimensional turbulent numerical simulation method was used to calculate the inlet flow pattern after the prototype of the lock station and the addition of the diversion pier. By analyzing the flow uniformity and weighted average angle of the inlet section in each case, it can be concluded that the flow pattern of the forepbay is mainly caused by the large diffusion angle. The longer a single diversion pier is added to the forebay, the better the rectification effect will be. Compared with the single pier, the combined pier can weaken the recirculation region more and improve the inlet flow pattern. The research results can provide reference for engineering practice.

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为探究常州市太湖庄园闸站在引水工况时前池存在流态问题的起因，并找到相应的解决办法，通过三维紊流数值模拟方法模拟闸站原型及增设导流墩后的进水流态，分析各情况下进水断面流速均匀度和加权平均角可知，前池流态问题主要是因其扩散角偏大所致，在前池增设单根导流墩越长，整流效果越好，组合式导流墩相比于单根导流墩，更能削弱回流区，改善进水流态。研究结果可为工程实践提供参考。

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叶帅（1995-），男，硕士、助理工程师，研究方向为水利工程设计，E-mail：1176414018@qq.com

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叶帅（1995-），男，硕士、助理工程师，研究方向为水利工程设计，E-mail：1176414018@qq.com

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