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为了探究不同布置形式的溢流坝进水口导墙对工程运行的影响,以直线型和直线圆弧组合型两种布置形式的导墙为例,通过整体物理模型试验和数值模拟的方法分析了闸孔进口及土石坝附近的流态、流速、紊动能等水力学特性。结果表明,直线型导墙会使其附近水流流态紊乱,降低临近闸孔的泄流能力,还会冲刷土石坝坡脚;直线圆弧组合型导墙可有效改善直线导墙形成的不利流态,为闸孔稳定泄流提供保障。研究结果可为其他类似工程导墙布置提供参考。
In order to explore the impact of different layout of overflow spillway guide wall on the engineering operation, taking two kinds of guide walls of linear and circular arc combination as an example, through the overall physical model test and numerical simulation method Gate hole entrance and near the earth and rock dam flow, velocity, turbulent energy and other hydraulics. The results show that the linear guide wall will disturb the water flow in the vicinity of the gate, reduce the discharge capacity near the gate, and will also scour the foot of the earth-rock dam. The straight circular arc guide wall can effectively improve the adverse flow formed by the linear guide wall. State, for the gate hole to provide stable discharge protection. The results of the study can provide reference for other similar project guide wall layout.