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对辽宁省朝阳市喀左县的水泉灌区的渠道工程翻转闸进行了水工模型试验。通过试验要了解翻转闸下宽顶堰在全开状况下的综合流量系数,并检验坝高是否满足最大行洪要求;观测挡土墙与土坝坝区的水流流态,以便更合理地选择坝面护料。模型试验表明:在设计流量时,实测上游水位低于设计值0.12m,闸坝高能满足行洪要求,实测流量系数为0.36;闸上游土坝坝面及坝脚底流速较大,建议加大挡土墙上游侧断面,以减小流速,保护土坝安全;试验稍偏于安全,在整体工程实际中,对本试验数据要分析应用。
Hydraulic model test was carried out on the reversing gate of channel project in Shuicquan Irrigation District of Kaizu County, Chaoyang City, Liaoning Province. Through the test, we should know the comprehensive flow coefficient of the wide weir under the fully open condition under the reversing gate and check whether the dam height meets the requirement of maximum flood discharge. Observe the water flow pattern of the retaining wall and earth dam area so as to choose more reasonably Dam surface care. The model tests show that when the design flow rate is measured, the measured upstream water level is lower than the design value of 0.12m. The gate dam energy meets the requirement of flood discharge and the measured flow coefficient is 0.36. Increase the upstream side of the retaining wall section, in order to reduce the flow rate, to protect the safety of earth dam; test slightly biased in safety, the overall project in practice, the test data to analyze and apply.