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针对Smart推移质输沙率公式在计算中高强度输沙时存在的问题,分析了推移质输移的有效切应力,获得平整床面和有沙波存在时,推移质运动的有效应力均是床面切应力与基于能坡分割的沙粒阻力的非线性组合的结论,并据此重新对实测数据进行拟合,提出了新的推移质输沙率公式。验证结果表明,新提出的公式预测精度较高。
According to the problems existing in the Smart Push Sediment Transport Rate Formula in the calculation of medium and high strength sand transport, the effective shear stress of pushover transport is analyzed. When the flat bed and sandwiched are obtained, the effective stress-push movement are both bed Surface shear stress and the non-linear combination of sand resistance based on slope partition, and then re-fit the measured data, and put forward a new equation of bedrock sediment transport rate. The verification results show that the new proposed formula has higher prediction accuracy.