窄缝挑坎消能工几个水力参数试验研究  

Experimental Study on Several Hydraulic Parameters in Slit-type Bucket Energy Dissipator

作　　者：聂艳华[1] 况曼曼[1] 王才欢[1] 杜兰[1] 

机构地区：[1]长江科学院水力学研究所,湖北武汉430010

出　　处：《水电与新能源》2016年第4期16-20,共5页Hydropower and New Energy

基　　金：国家自然科学基金项目(51279013);(51379020);(51509015);长江科学院中央级公益性科研院所基本科研业务费(CKSF2014042/SL/CKSF2014044/SL)

摘　　要：窄缝挑坎消能工以其消能效果显著被广泛运用于高坝建设中,通过建立概化物理模型对窄缝挑坎消能工几个典型水力参数进行模拟研究,根据工程经验分别选取收缩断面前不同来流条件,不同收缩比、挑坎挑角的窄缝体型,共计9组36种试验工况来进行系列模型试验,分析总结其变化影响规律,研究成果可为窄缝挑坎消能工优化设计和进一步深化研究提供理论支持。Slit-type bucket energy dissipator was widely used in high dam construction because of its significant energy dissipation effect. A generalized physical model experiment is conducted to investigate the variation of several hydraulic characteristics in the slit-type bucket energy dissipator such as the water line,hydrodynamic pressure and water tongue trajectory. Nice sets and thirty six working conditions are tested with different combinations of the Froude number,shrinkage ratio,and pick angle. The experiment results provide useful theoretical supports for further study and optimization design of this energy dissipator.

关 键 词：窄缝消能工 模型试验 水力参数 弗劳德数 

分 类 号：TV653.3[水利工程—水利水电工程] TV653.4