闸前弯道水流特性的试验研究

Experimental Study on the Behavior of Flow through the Curved Channel in Front of a Sluice Gate

从模型实验和理论研究两方面对平底平板多孔闸闸前９０°弯道水流特性进行了试验研究．在实验的基础上建立了弯顶最大水面横比降与闸门相对开度之间的关系式及闸前均匀顺直段长度的计算式，为弯项水面横比降的计算和弯道下游闸位的选择提供了设计依据．

The behavior of flow through the curved channel at an angle of 90° in front of the multi-port flat sluice gate is researched by experimental and theoretiCal methods. Based on the experimental results, the .relationship between the maximum cross slope of water surface at the turning of curved channel and the relative opening of sluice gate (e/h ), and the formulas of the length of smoothed and uniformed zone are obtained. Thus, the design basis is provided for Calculating the water surfaCe cross-slope and choosing the position of lower sluice gate for curved channel.