摆动水跃 meaning in English

oscillating jump

What ' s more , we put forward some experienced formulas on the basis of the cortical analysis . the result of the research show that by installing diffluent piers with low ridge , we can eliminate the root of oscillatiny water jump , perfect the energy dissipation effect of water jump , also , we can improve the flow condition of down - stream . the fact that the main flow of down - stream is in the middle , not only effectively lower the speed of the bottom flow in the ridge rear , alleviate the erosion to the river bed , but also avoid the heavy wave resulted from the main flow in the surface , thus improve the surface wave of down - stream obviously . we can work out the body style parameters of diffluent piers with low ridge according to the project flow condition and experience formulas , and then reckon the down - stream surface wave condition for the protected building of the down - stream bank
研究结果表明：设置低坎分流墩后，消除了摆动水跃水舌摆动的根源，提高了水跃的消能效果，改善了下游水流流态。下游水体的主流在中部，既有效的降低了坎后水流底流速，减轻水流对河床的冲刷，又避免了主流位于表面导致波浪过大的结果，下游的水面波浪明显得到削减。依据经验公式，可根据工程水流条件设计出低坎分流墩的体型参数，进而估算出下游沿程的水面波浪，为下游岸边的砌护提供依据。