滨海核电站取水渠长周期波动现象及其消减

在滨海核电站取水工程的波浪整体模型试验中发现，防波堤和较长的取水明渠在有效消减外海传入波浪的同时，会在明渠、泵站前池和吸水池出现长周期波动。本文通过模型试验分析了取水渠内长周期波动产生的条件及影响因素，得出取水渠口门处的海浪运动是引起取水渠中长周期波动的水动力条件和能量来源，口门宽度、形状以及取水渠断面尺寸、形状等对长周期波动的幅度有重要影响的结论，据此提出了消减长周期波动的各种工程措施，并进行了试验验证，提出了从取水渠口门方向、宽度、形状以及取水渠断面宽度、形状和护岸结构型式等方面消减取水渠中长周期波动的设计思路。

Long period wave occurred to cooling water intake channel of nuclear power stations

Model tests reveal that long period waves always occurred to the long cooling water intake channel of coastal nuclear power stations. The occurrence conditions and factors affecting the wave height and frequency are analyzed and some effective engineering measures for reducing the waves, such as adding ponds in the midway of channels, swerving the channel axes, reducing the gate width of the channel and placing obstacles to reduce the wave, are investigated. Based on model test results some effective methods, including adjusting the direction of intake, improving the configurations of channel and suitable type of revetment structure are suggested.