翻板闸流量系数变化特性试验研究

发布时间：2018-07-17 00:07

【摘要】：翻板闸门开启后,门上门下两层泄流,为堰、孔混合流,复杂的流态给工程的水力设计带来了难度,现有研究均是以求得综合流量系数为目标。为分开讨论在堰、孔独立出流时的相互影响,通过开展模型试验,基于翻板闸最大开度工况下的过流特性,研究来流量大小和下游水深对翻板闸过流能力的影响。试验来流量分别为0.06、0.08、0.10、0.12 m~3/s,下游水深分别为0.50、0.55、0.60、0.65 m的工况组合,共16种工况进行试验。试验结果表明下游水深一定时,流量系数与来流量呈正相关关系;来流量一定时,流量系数与下游水深呈负相关关系。该研究成果基于大开度工况,可进一步研究其他工况的流量系数。
[Abstract]:After the flip gate is opened, the two layers of discharge under the door of the gate bring difficulties to the hydraulic design of the project due to the mixed flow of Weir, hole and complex flow state. The existing research is aimed at obtaining the comprehensive flow coefficient. In order to discuss the interaction between the weirs and the holes independently, the effects of the flow rate and the downstream water depth on the overcurrent capacity of the tipping sluice are studied based on the overcurrent characteristics of the tipping gate under the condition of maximum opening through the model test. The test flow rate is 0.06 ~ 0.08m ~ (0.10) ~ (0.10) ~ (0.12) m ~ (-1) and the downstream water depth is 0.50 ~ (0.5) ~ 0.60 ~ (0.65) m, respectively. The test is carried out under 16 working conditions. The experimental results show that when the downstream water depth is fixed, the flow coefficient has a positive correlation with the incoming flow rate, and the flow coefficient has a negative correlation with the downstream water depth when the flow rate is constant. The research results are based on the large opening condition, which can further study the flow coefficient of other conditions.
【作者单位】：四川大学香港理工大学灾后重建与管理学院;国电大渡河公司库坝管理中心;四川大学水力学与山区河流开发保护国家重点实验室水利水电学院;
【基金】：四川大学“大学生创新创业训练计划”国家级资助项目(201410610074)
【分类号】：TV66

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