中文摘要：

采用数值模拟手段,计算了当引航道航道中心线与河流主流存在较大夹角时,船闸引航道口门区及其连接段区域不同流量下的水位、流速分布等水力特性.计算结果表明：各级流量下引航道口门区的斜流效应明显,影响口门区通航水流条件,分析各级流量下的通航水流条件后,确定其最高通航流量为4 000 m3/s,若要提高最高通航流量,应适当减小航道中心线与河道主流的夹角.通过对比分析数值模拟与物理模型试验的结果可知,该数学模型能较好地模拟引航道口门区水流条件.

英文摘要：

Based on the numerical simulation of different discharges, water level and velocity distribution of a ship lock approach channel entrance and abutment are studied with a large angle between the mainstream of the fiver and the central line of the approach channel. The calculated results show that the channel entrance at all levels has oblique flow influencing navigation, and the maximum navigable flow is determined as 4 000 m3/s after analysis of navigation conditions, which can experiment results show that this entrance. be improved by deceasing the above numerical model can well simulate the angle. Comparison with physical model flow conditions of the approach channel