紫坪铺水利枢纽工程溢洪道挑坎体形研究

Shape Research of Throw-flow Nose Ridge of Spillway in Zipingpu Hydraulic Project

挑流鼻坎体型设计和它的变化具有很大的灵活性。结合紫坪铺水利枢纽工程溢洪道的挑坎特性 ,应用CFX软件对其挑流鼻坎的体型进行了改进优化 ,经模型试验的验证 ,挑流鼻坎上的水舌分布均匀、挑距增大 ,而且对下游的冲刷深度减小。

Designing and variety of throw flow nose ridge are very flexible. In consideration of features of throw flow nose ridge of spillway in Zipingpu project, this paper adopts CFX software to improve the shape of throw flow nose ridge. The optimization is testified through model test. It is shown that distribution of flow on throw flow nose ridge is symmetrical and the throw distance is far, moreover, the downriver irruption is shallow.