【摘要】 为检验工程平面布置的合理性,通过物理模型试验手段,分析预测滨海电厂防波堤工程实施后取水口的泥沙运动与冲淤情况。分析表明:工程区域的潮型为以半日潮为主的混合潮,潮流比较微弱,实测最大流速均小于0.30 m/s,水体含沙量也极为有限(<0.01 kg/m~3),经前期数模计算工程前、后流速均小于泥沙起动计算值,不是泥沙运动的主要动力条件;工程区波浪动力较强,波周期可以超过10 s,近岸破波带平均含沙量在0.8～0.9 kg/m~3,横向输沙特征显著,是本区泥沙淤积的主要因素;由于悬沙影响较小,波浪较强,破碎区以沿岸输沙和近岸横向输沙为主,因此试验选用以波浪动力为主的动床物理模型。分析结果可为解决和减轻泥沙淤积的工程措施等提供科学依据。更多还原

【Abstract】 In this paper, the physical model test method is used to analyze the sediment movement and erosion and deposition of the water intake after the implementation of the breakwater project of the coastal power plant, to verify the rationality of the layout of the project. Analysis shows: The tidal type of the project area is a mixed tide dominated by half-day tides, and the tidal current is relatively weak. The measured maximum flow velocity is less than 0.30 m/s, and the sediment concentration of the water body is also extremely limited(<0.01 kg/m~3). The flow rate before and after is less than the calculated value of sediment start, not the main dynamic condition of sediment movement; The wave power in the project area is strong, the wave period can exceed 10 s, the average sediment concentration in the near-shore wave breaking zone is 0.8 ～0.9 kg/m~3, and the horizontal sediment transport characteristics are significant, which is the main factor of sediment deposition in this area; Due to the small influence of suspended sand, the waves are strong, the sand transport along the coast of the broken area and the lateral sand transport are mainly based on the wave. Therefore, the physical model of the moving bed dominated by wave power is selected. The analysis results can provide scientific basis for engineering measures to solve and alleviate sediment deposition.更多还原