基于模型试验的地下厂房尾水管体型反演改进

Geometry Inversion and Modification of Draft Tube for Underground Hydropower House Based on Model Test

针对大型水电站地下厂房尾水管体型模型试验验证时未考虑其体型几何特征现场可实施性的问题,通过Matlab数学软件在尾水管试验模型数据的基础上,对尾水管体型进行反演模拟计算,找出了接近模型试验体型的几何参数方程,在不影响尾水管性能的前提下,对该几何参数方程进行改进,使体型结构更具施工便利性。将改进后的体型应用于工程实践,取得了良好效果,验证了所提反演模拟及体型改进方法的可行性,亦为其他类似水电工程提供了借鉴。

When the shape of draft tube in large underground hydropower station is verified by model test,the practicability of site operation for its geometry features is usually not considered.Thus,the inversion of geometry features for the draft tube is conducted in this paper based on its model test data with the software Matlab.The approaching parameterized geometric equations for the draft tube are obtained,and under the premise of having no effect on its performance,the parameterized geometric equations are modified to obtain more construction convenience.The modified shape of draft tube has been successfully applied in the engineering practice with good results,which verifies the effectiveness of the proposed inversion and improvement on the geometry features of draft tube.The method can be further applied in the more broad similar hydropower engineering projects.