三峡船闸阀门后压力的变化规律

本文依据三峡船闸(设中间渠道方案)输水系统水力学模型试验结果,分析阀门在不同开启情况下门后廊道顶部压力的变化情况,探讨阀门局部开启时门后水流收缩系数ε,以及恒定流与非恒定流在水力特性方面的差异。提出了恒定流与非恒定流的水流结构相吻合的开启时间。

Discussion on the Pressure Variation behind the Valve of Three Gorge Lock

On the basis of the hydraulic model test results of the filling and emptying system of the Three Gorge Lock (with a connecting canal), the pressure variations of the culvert top behind the valve in case of different openings are analysed in this paper. The flow contraction coefficient ε, behind the valve in case of its partial opening and the difference in hydraulic characteristics between constant flow and unconstant flow are also approached. Therefore, the opening time when the unconstant flow structure corresponds to the constant flow structure is presented.