悬板区流场特性及其对输沙的影响

Flow Field Characteristics in Hanged Plate Region and Their Effects on Sediment Transport

通过物理模型对悬板区流场的测试分析，以及整体模型的浑水输沙试验，揭示了悬板分层式引水渠首“引清”及高效输沙的内在原因，是悬板的设置改变了悬板区水流结构，即悬板水平分割水流，引上层清水，下层由明流生成为有压流，提高了底部流速及流速梯度，获得较高输沙能量，使其高效输沙。

Based the surveys of the flow characteristics in plate region by in a physical model, and the sediment transport test in a integral model with mudflow, the paper reveals the intrinsic causes how the two storied intake of the hanged plate diverts clear water with its high efficient sediment transport. The arrangement of hanged plate changes the flow structure in plate region, the hanged plate horizontally separates the flow, and the clear water of higher levels is diverted while the lower flow has the pressure and raised velocity ,thus, the high energy of sediment transpnt.