The hole in the working gate in the export of tunnel usually decorate, working gate often moving water requirements of opening and closing, often in static water maintenance gate opening and closing.
有压洞的工作闸门通常布置在隧洞的出口，工作闸门要求常在动水中启闭，检修闸门常在静水中启闭。
3
It briefly describes the working principle of stepping motor based upon the gate tests at the intake tunnel for Laxiwa hydropower project.