Hydropower And Stabilization Characteristics Research Of Local Material Dam Overshot Spillway

The thesis based on projects and correlative examination, made a study of hydropower and imbricate structure soleplate stabilization characteristics research of local material dam overshot spillway. Through the hydraulic experiment for flowing ability of three kinds of weirs which used on the over-flow earth-rock dam, analysed discharge coefficient and the main facts on the weirs, the results shows: the flowing ability of arc weir and airfoil weir are better then broken-line weir's, and there is a consanguineous relation between structure Characteristics and discharge coefficient. At the same time, the thesis gave the method for the two kinds of weirs used on over-flow local material dam.Aimed at the different kinds of overflow weirs, we got variety relevant rule of the initial position water depth by the hydraulic experiment when we analysed the relevant problem for water surface profile of local material dam overshot spillway; through analysed aeration effect on water surface profile, we found a calculate method for the water depth behind of aeration when there is no experiment condition.The paper studied hydrodynamic load on static force anti-sliding stability analysis for chute soleplate. Through the theory analyse, we gave the concept of broad sense and the formula of drag force, then analysed main facts of drag force; based on existing experiment datas and theory results, the thesis discussed calculate method for hydrodynamic pressure and pulsating pressure which effect on soleplate, at the same time, based on special structure of local material dam overshot spillway and essentiality of safe flowing, we gave advice on fixing parameter.Based on analysed of pressure which act on imbricate structure soleplate, we educed the static force anti-sliding stability formula; studied anti-sliding stability on different height soleplate with the same slope; The thesis analysed effection of hydrodynamic pressure, pulsating pressure and drag force on stability of soleplate; at the same time ,the paper compared a series of reinforce measures which can improve security of soleplate .