三峡永久船闸抽水调试期水力学原型观测

介绍了三峡永久船闸抽水调试阶段水力学监测的部分成果,并与模型值进行了比较.资料分析结果表明:闸室输水系统输水效率高,输水时间原型较模型缩短17.6%,最大流量较模型增大32%,流量系数较模型增大34.6%.控制超灌(泄)操作方式可行;阀门、人字门启闭力均小于设计值;阀门接近全开至全开后,输水廊道第一分流口有空化现象.

Hydraulics prototype observation in water-pumping debugging period for TGP lock

Hydralics monitored findings in the water pumping debugging period for TGP lock are presented and compared with model test data. Analytic results show that: the lock chamber filling and emptying effectiveness is high, the filling time of a chamber in prototype is less by (17.6%) than that in model, and the maximum discharge and discharge coefficient in prototype are larger by 32%, (34.6%), respectively, against those in model. The operation measures for controlling over filling(over emptying) are feasible; the hoisting loads of valve and miter gate are less than their design values respectively; but, there exists cavitation phenomenon needed to pay attention to the first crossover culvert when the valve is near and after whole opening.