【作者】 朱炳泉； 黄国富；

【Author】 ZHU Bing-quan HUANG Guo-fu (Shanghai Branch,China Ship Scientific Research Center,Shanghai 200011)

【机构】 中国船舶科学研究中心；

【摘要】 运用水力学、泥沙运动力学及相似理论,对平流式沉沙池进行了浑水水力模型试验研究.针对原设计方案中存在的沉沙效率不足问题,提出了行之有效的改进措施,使沉沙池的沉沙效率增至90%以上,出池含沙量大大降低,从而提高了下游污水提升泵房和过江隧道运行的安全可靠性。更多还原

【Abstract】 According to hydraulics,sediment dynamics and similarity theory,a hydraulic model for a horizontal-flow sand basin was designed.Then,model tests on deposition efficiency of sediment in the sand basin were carried out.The model test results on the design scheme show that the deposition efficiency should be improved furthermore to ensure the safety of downstream tunnels across river.Thus,measures to improve deposition efficiency of suspension sand in the sand basin are adopted.After the height of the basin’s overflow weir top has been elevated for 0.6m,the deposition efficiency is improved to above 90 percents,while the sediment concentration at the outlet of sand basin is greatly decreased.更多还原