齿墩与消力池联合消能机理分析

齿墩与消力池联合消能可用附加射流水跃理论分析 ,用跃后水深、水跃长度或单宽水跃容积减少的百分数 ,估计新增消能设施的经济效益 ,并通过模型试验验证消能的理论分析 ,计算新增设施的消能量、跃后水深、水跃长度或单宽水跃容积减少的百分数。结果表明 ,采用齿墩设施 ,可增进消力池的消能作用 ,并取得显著的经济效益 ,达到附加射流水跃理论所预期的效果

Analysis of Principle on Joint Energy Dissipation of Stilling Basin and Dentoid Baffle

In this paper, the joint energy dissipation mechanism of stilling basin and dentoid baffle is analyzed based on additional jet flow hydraulic jump theory. The economic benefits of the new additional energy dissipation facilities are estimated in terms of the decreased percentage of the sequent depth of hydraulic jump and length of jump, or the capacity of hydraulic jump under the unit width. The experiment results of the model stilling basin and dentoid baffle attest the theoretic analysis. Using the model experiment data, the authors calculate the decreased percentage of water jump length and unit width hydraulic jump volume, the energy dissipation rate of dentoid baffle, as well as the water depth downstream of the jump. It is concluded that dentoid baffle can increase the energy dissipation rate of hydraulic jump theory and decrease the engineering cost. The obvious economic benefits and the predicted effect of additional jet flow hydraulic jump are obtained.