饶平县汤溪水库溢洪道水工模型试验研究

Study on Hydraulic Model Test of Tangxi Reservoir Spillway in Raoping County

通过溢洪道水工模型试验,研究优化布置对溢洪道水力特性的影响。经过多方案比选,试验对进水渠导墙布置形式以及墙身结构进行优化,可扩大进水面、减小导墙进口内、外侧水位差、改善进水渠内水流流态,从而提高了溢洪道泄流能力;通过增加外凸式阶梯陡槽段、降低消力池尾坎高程等措施,可增加下游消能效果,优化出池流态,可为类似工程提供借鉴。

Through the hydraulic model test of the spillway,the influence of the optimal layout on the hydraulic characteristics of the spillway is studied.Through the comparison and selection of several schemes,the test optimizes the layout type of the guide wall of the intake channel and the structure of the wall body,which can expand the intake surface,reduce the water level difference inside and outside the inlet of the guide wall,and improve the flow pattern in the intake channel,so as to improve the discharge capacity of the spillway;by increasing the convex stepped chute section and reducing the elevation of the tail sill of the stilling basin,the downstream energy dissipation effect can be increased and the flow pattern of the stilling basin can be optimized.The test results can be used as a reference for the design and operation of similar projects.