消力池底板透水孔内脉动压强试验研究  

Experimental study on fluctuating pressure in pervious hole of the botton slab of the stilling basin

作　　者：李会平[1] 杨敏[1] 董天松[2] 

机构地区：[1]天津大学水利工程仿真与安全国家重点实验室,天津300072 [2]长春工程学院,吉林长春130012

出　　处：《水利水电技术》2015年第9期105-108,114,共5页Water Resources and Hydropower Engineering

基　　金：国家自然科学基金资助项目(51179119);国家自然科学基金创新研究群体科学基金资助项目(51021004);水利部公益性行业科研专项基金资助项目(200901081)

摘　　要：基于某跌坎消力池水工模型试验,在消力池底板中线不同位置设置透水孔,同步测量透水孔内和底板中线上表面的脉动压强。用模型试验和理论分析相结合的方法对透水孔内的脉动压强特性进行研究,得到透水孔内任意两点脉动压强相关系数的取值范围;从幅值特性和频谱特性两方面就孔内各点的脉动压强与相同位置上表面的脉动压强进行了对比,研究结果可为消力池透水底板的设计提供参考和指导。Based on the hydraulic model test of a stilling basin with falling-sill,pervious holes are arranged at different locations along the midline of the bottom slab of the stilling basin,and then the fluctuating pressures in the pervious holes and on the surface of the midline of the bottom slab are synchronously measured. The characteristics of the fluctuating pressure in the pervious hole is studied by the model test combined with theoretical analysis,thus the value range of the correlation coefficient of the fluctuating pressures at any two points in the pervious hole is obtained. From the aspects of both the amplitude characteristics and the spectrum characteristics,the fluctuating pressures at all the points inside of the hole are compared with the surface fluctuating pressures at the same locations. The study result can provide reference and guidance for the design of the pervious bottom slab concerned.

关 键 词：水力学 消力池 透水孔 脉动压强 模型试验 

分 类 号：TV135.2[水利工程—水力学及河流动力学]