中文摘要：

为进一步研究紊流浑水异重流交混区阻力规律,并简化该阻力计算方法,通过对紊流浑水异重流交混区上下两部分流速分布的研究,提出了最大流速点以上流速分布修正公式及适合高含沙水流的最大流速点以下流速分布公式。在此基础上对紊流浑水异重流交混区阻力系数进行了探讨,推导出了水库紊流异重流交界面阻力系数公式,并对其进行了讨论,论证了公式的合理性。并利用天然实测资料和实验室异重流试验数据对公式进行了验证,结果表明：推导出的异重流交界面阻力系数计算方法可以较好地模拟异重流交界面阻力变化规律。

英文摘要：

Based on the study of velocity distribution at mixing interface of turbidity current, an improved formula for calculating the water flow velocity distribution in the region higher than the maximum velocity and the turbidity flow velocity in the region beneath the maximum velocity is proposed. On this basis, the formula for calculating the interracial resistance of turbidity current is deduced. The validity of the formula is verified by prototype observation and experimental data.