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为研究高拱坝下游水垫塘底板的稳定性 ,应用二元紊动射流理论 ,论证了水垫中最大紊流切应力和脉动压强点向上、下游偏离 ,并给出了计算偏离的公式 ;利用安芸周一、二滩和小湾水垫塘试验资料 ,建立了适用于浅、深水垫的二元水舌扩散流速公式、脉动压强均方根和紊流切应力的关系 ;利用三元紊动射流试验资料 ,引入水舌宽厚比 ,建立了三元水舌扩散流速公式
In order to study the stability of the bottom plate of the plunge pool in the high arch dam, the dual turbulent jet theory is used to demonstrate that the maximum turbulent shear stress and the fluctuating pressure point of the water cushion deviate upward and downstream, and the formula for calculating the deviation is given. Based on the experimental data of Anyiyun, Ertan and Xiaowan plunge pool, the binary diffuser flow rate formula, the root mean square of fluctuating pressure and turbulent shear stress are established for shallow and deep water mats. Jet test data, the water tongue thickness to thickness ratio was introduced to establish the formula of water flow rate of water diversion