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水厂取水工程明渠排砂设计

Xu-bin ZHANG,Song WANG,Chang-rong LIU

China Water & Wastewater（2008）

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Abstract
针对某水厂取水口淤砂严重的问题,对取水口进行了改进设计.由于河道底部平坦,无法利用上下游高程差进行排砂,因此设计采用机械排砂方式,即在渠道内均布几排水下推进器.设计中通过计算排砂流速及明渠内的阻力损失确定了所需推进器的数量及参数,保证了取水口的正常运行.
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Key words
threshold velocity,underwater pushers,intake hopper,stirring-up velocity
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