苏北大丰港海域航道临时抛泥区悬沙扩散影响研究     

罗小峰  路川藤  张功瑾  丁伟 《海洋工程》2020,38(4):129-136

以大丰港航道临时抛泥区抛泥为研究对象,建立苏北辐射沙洲大丰港海域二维潮流泥沙数学模型,研究了航道临时抛泥区抛泥后的泥沙运移特征及对周边航道、锚地的影响。研究表明,在地形和边界的约束作用下,抛泥区的水质点运动具有明显的往复流特征,大潮涨落潮水质点轨迹存在一定的流路分歧;抛泥区抛泥后,高浓度含沙水体呈南北条状形态,轴线与航道基本平行;涨急和涨憩时刻抛泥,悬浮泥沙对航道具有一定的影响,而落急和落憩抛泥,悬浮泥沙对锚地影响相对较大。  相似文献   

Hydrodynamic Effect of the Regulation Project of Yangtze River Deepwater Channel Downstream of Nanjing     

杨东利  窦希萍  张新周  罗小峰 《海洋工程》2013,27(6):767-779

A two-dimensional flow numerical model of the tidal reaches, which total length is more than 700 km, is established from Datong to the Yangtze River estuary. The tidal levels, velocities, diversion ratios and dynamic axes before and after the separate regulation of each reach and combined regulation of all reaches are obtained. The comparative analysis shows that the regulation project of a separate reach basically has no impact on velocity distributions and variations of diversion ratios of upper and lower reaches, the variations of dynamic axes are only within the local scope of the project. The regulation project of a separate reach also has less impact on the water level in the lower adjacent reaches, but will make the water levels in the upper reaches rise. After the implementation of the regulation projects for all reaches, the rise of water level in the upstream reaches will have a cumulative impact.  相似文献   

径流和潮汐对长江口盐水入侵影响数值模拟研究   总被引：6，自引：0，他引：6  

罗小峰  陈志昌 《海岸工程》2005,24(3):1-6

影响长江口盐水入侵的主要动力要素是上游径流和外海潮汐.利用盐度实测资料验证了平面二维盐度数学模型.结果表明,实测资料和模拟结果相符,在此基础上进行了4种不同水文组合的模拟计算.通过计算结果分析,取得了长江口地区盐水入侵平面分布的基本规律.  相似文献   

近岸海域地形复杂性对潮汐特征的影响研究——以南黄海及东海北侧海域为例     

张功瑾  柳志会  罗小峰  路川藤 《水文》2023,43(5):84-88

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