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明槽的浆体输送在过去的设计计算中,或者使用清水公式,或者使用经验公式,计算精度偏低。本文从颗粒悬浮输移的机理出发,把输送的非均匀颗粒分成粗细两种,并认为细颗粒和水充分混合形成浆体,增加了水流的粘性,抑制了水流的紊动,减少了水流的能耗;粗颗粒要保持悬浮或者输移需要消耗水流的能量。推导了计算明槽浆体输送水力坡降及临界淤积流速的公式,并通过实测资料进行了验证,取得了满意的效果。本文公式给工业明槽设计提出了新的水力计算方法。
The slits of the slips are transported in past design calculations, either using fresh water or using empirical formulas, with poor accuracy. In this paper, based on the mechanism of suspended sediment transport, the nonuniform particles are divided into two kinds of coarse and fine particles, and the fine particles and water are fully mixed to form a slurry, which increases the viscosity of the water flow, suppresses the turbulence of the water flow and reduces the water flow Energy consumption; coarse particles to be suspended or transported need to consume water flow energy. The formula for calculating the hydraulic gradient and the critical deposition velocity of the slurry in the flume is derived and verified by the measured data. The satisfactory results are obtained. The formula presented a new hydraulic calculation method for industrial tank design.