水力发电学报2014，Vol.33Issue(3)：138-142,5.
跌坎消力池水动力荷载特性试验研究
Experimental study on characteristics of hydrodynamic load in stilling basin with drop sill
摘要
Abstract
Scale model tests have been conducted to study the characteristics of hydrodynamic load and pool slab stability of a stilling basin with drop sill for a hydropower station.The results show that when the entire hydraulic jump takes place in the chute outlet section,maximum fluctuating pressure coefficient of the chute bottom is 30 times that of the stilling basin slab.The coefficients of these two locations are comparable in the same order of magnitude if only part of the jump stays in the chute outlet section.The integral scale of fluctuating pressure of the jump in the chute is smaller than that of the stilling basin.As the flow-energy ratio (R) increases,this scale is increased while the integral scale of stilling basin is decreased.The uplift force on unit area of the chute bottom is greater than that of the basin slab.Uplift force depends not merely on fluctuating pressure coefficient,but on fluctuating pressure integral scale.关键词
水力学/跌坎消力池/脉动压强/积分尺度/上举力Key words
hydraulics/ stilling basin with drop sill/ fluctuating pressure/ integral scale/ uplift force分类
建筑与水利引用本文复制引用
李树宁,杨敏,董天松,李会平..跌坎消力池水动力荷载特性试验研究[J].水力发电学报,2014,33(3):138-142,5.基金项目
国家自然科学基金项目(51179119):长江学者和创新团队发展计划(IRT0851):国家高技术研究发展计划(863计划)资助(2012AA051702) （51179119）
