闸站结合的多功能泵站进水侧流态优化研究

Research on Flow Pattern Optimization on Inflow Side of Multifunctional Pumping Station Combined with Gate and Station

摘要:

为了优化闸站结合的多功能泵站进水侧流态，在排涝站进水侧90°转弯处中间设置了开孔弧形和线形直立导流墙，在排洪站和自排闸之间进水侧墩墙前设置了斜降式城垛型开孔导流墙，采取水工模型试验方法，获取泵站进水侧流态的具体情况。研究结果表明，开孔导流墙能有效缩小泵站进水侧导流墙旁的回流区，较好地解决了偏流较大的问题；排涝站进水侧流速均匀度由26.50%（74.3%）提高到55.6%（89.9%），排洪站进水侧流速均匀度由89.20%（85.5%）提高到93.7%（89.5%）。泵站优化后的进水侧流态满足规范要求，研究成果可为类似泵站进水侧流态改善提供参考。

Abstract:

In order to optimize the flow pattern on the inflow side of the multifunctional pumping station combined with the gate and station, at the 90° turning on the inflow side of the waterlogging drainage station, a perforated arc-shaped and linear vertical diversion wall is set in the middle, and a slanting park-type open-hole diversion wall is set up in front of the inflow side pier wall between the flood discharge station and the self-discharge gate. The specific conditions of the flow pattern on the inflow side of the pumping station are obtained by the hydraulic model test method. The research results show that the perforated diversion wall can effectively reduce the recirculation zone next to the diversion wall on the inflow side of the pumping station, effectively solving the problem of large deviation current. The uniformity of the flow velocity on the inflow side of the waterlogging drainage station increases from 26.50% (74.3%) to 55.6% (89.9%), and that of the flooding drainage station increases from 89.20% (85.5%) to 93.7% (89.5%). The flow pattern on the inflow side of the pumping station after optimization meets the requirements of the specifications, and the research results can provide a reference for improving the flow pattern on the inflow side of similar pumping stations.