某核电厂防波堤结构对前池波高影响试验研究

Experimental study on influence of breakwater structure fora nuclear power plant on wave height in forebay

某核电厂取水北防波堤段设计拟采用直立式和斜坡式2种结构方案,为了深入分析2种结构形式对泵房前池波高的影响程度,通过波浪整体物理模型试验,研究不同结构形式的防波堤在各向波浪作用下,泵房前池波高的变化情况。通过优化试验,在取水明渠前端设置挡浪设施,以降低泵房前池波高;同时,采用经验模态分解(EMD)方法对前池波动进行分离,结果表明泵房前池以长周期波动为主。

The north breakwater of a nuclear power plant is designed to adopt two structural schemes of vertical type and slopetype.In order to in-depth analyze the influence of the two structural types on the wave height in the forebay of the pump house,physical model tests were carried out to analyze wave heights in the forebay of a pump house of different structural breakwatertypes under the action of various wave directions.Through optimization tests,wave blocking facilities were set up at the frontend of the open water intake channel to reduce the wave height in the forebay of the pump house.EMD method was used toseparate the fluctuation of waves in the forebay and the results show that the forebay of the pump house is subject to long periodfluctuation.