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水库溢洪道、泄洪洞的出口以及渠系某些泄水建筑物的消能工程,为了将含能集中、从较窄的泄水前沿下泄的高速水流引导至下游较宽的河道,减小单宽流量,提高消能效率,常采用的形式为扩散消力塘.消力塘的横断面有梯形与矩形两种. 由于平底渐变扩散消力塘,是一种良好的水跃消能工,常见于溢洪道与泄洪洞的出口下游.这种消力塘的优点是:①水流扩散消能效果好:②水跃的第二共轭水深较二元水跃共轭水深少.
In order to direct the high-velocity water flow discharged from the narrower discharge front to the wider downstream channel and reduce the width of single-widths, the discharge of the reservoir spillway, the discharge of the spillway tunnel and the energy-dissipating works of some drainage structures of the canal system, Flow, improve energy efficiency, often used in the form of diffuser Xiao Tong. Consumption pond cross-section has a trapezoid and rectangular. As the flat-gradient diffuser Xiao Tong, is a good water jump energy dissipater, common The spillway and spillway exit of the downstream.The advantages of this power pond is: ① flow diffusion and energy dissipation effect: ② water jump second conjugate water depth than the binary conjugate water depth less.