长江藕池口水道平面二维水沙数学模型研究  

Study of two dimensional flow and sediment numerical model of Ouchikou reach in mid Yangtze river

作　　者：李明[1,2] 刘林 郑力 

机构地区：[1]武汉大学水资源与水电工程科学国家重点实验室,湖北武汉430072 [2]长江航道规划设计研究院,湖北武汉430011

出　　处：《人民长江》2011年第15期63-65,91,共4页Yangtze River

摘　　要：针对三峡水库蓄水以后,藕池口水道滩槽格局稳定性下降,航道条件持续恶化的情况,开展了水道演变相关研究工作。模拟并预测了这一典型弯曲分汊河段在新水沙条件下的演变趋势。研究结果表明,三峡水库蓄水以后,该水道倒口窑心滩从生成到并岸的周期性演变规律并未发生本质性变化,且该区域可能在倒口窑心滩并岸之后发育新的心滩;航宽有不断变窄的趋势,建议及早展开系统治理,以保证该航道稳定的通航条件。The navigation condition of Ouchikou reach of Changjiang is increasingly unstable after the impoundment of TGP.We established the two dimensional flow and sediment numerical model to simulate and predict the evolution trend of the typical bend and braided channel under new flow and sediment conditions.The results showed that the periodic evolution law of Daokouyao bar from formation to connection with bank was not changed essentially after impoundment of TGP.And in this region,a new bar may be formed after the connection of Daokouyao bar with the bank;and the channel would be narrowed.It is recommended that the systemic regulation should be carried out soon to stabilize the navigation conditions.

关 键 词：河道演变 航道条件 平面二维数学模型 三峡工程 

分 类 号：TV147[水利工程—水力学及河流动力学]