本模型试验在取水口分流比达６０％、引水发电与冲沙的争水矛盾较突出的布置条件下，通过多种方案比较试验，利用束水墙、冲沙槽及多道拦沙坎等防排沙设施，发挥不同流量时冲沙闸、泄洪闸各自的排沙作用，优化出适合枢纽特点的布置型式。配合枢纽的运行方式及闸孔闸门的开启顺序，构成了较完整的防沙体系，从而使首部枢纽的引水防沙取得了较为满意的效果 In this model test, under the conditions of more than 60% diverting ratio of water intake and the contradiction between water diversion and power generation and flushing, Anti-sediment facilities, to play a different flow red sand sluice, sluice discharge sluice their respective role to optimize the characteristics of the hub layout of the type. With the operation of the hub and gate gate opening sequence, constitute a more complete system of sand control, so that the first pivot of the diversion of water to achieve a more satisfactory results