输水渠道中闸门调节速度与水面线变化研究

运用特征线法建立输水渠道一维非恒定流数学模型，数值模拟给出了在不同的闸门调节组合及渠道运行方式下，不同的闸门调节速度对渠道水面线变化的影响。模拟结果表明：闸门调节速度越大时，流量及水位的变率也越大，水位也越早出现波动情况，对渠道的衬砌安全也越不利，但是渠道的响应时间会缩短，且最终都能过渡到同一平衡状态。

Study of Sluice Gate Regulating Speed and Changes of Water-surface Profile in Transportation Channels

This paper applies characteristic method to establish one-dimensional unsteady flow mathematical model of transportation channels . The influences of different regulating speed of gates to the changes of water-surface profile in channels under conditions of different gate regulating compages and operation modes are given. The results of simulation show; the larger the gates regulating speed, the larger variating speed of discharge and water-surface level occurs, the earlier the oscillation of water-surface level appears and are more disadvantageous to the safety of linings in channels, but shorter the responsing time interval needed for the flow to reach stable state, and also ultimately they can transit to the same equilibrium conditions.