1981年,我们在盘石县雷南水库溢洪道上安装了两扇露顶式水力自动启闭弧形闸门(以下简称“自动弧门”)。在暴雨预报不准,突然发生汛情时,自动弧门能够准确无误地自动开闸泄洪。除在预定水位下能自动开启外,在遇到特殊情况需要提前开闸或闭闸时,均可人工控制在所需开度下泄流或闭闸蓄水。 In 1981, we installed two dew-top hydraulic automatic opening and closing radial gates (hereinafter referred to as “automatic arc gates”) on the Lei Nan reservoir spillway in Panshi County. In the storm forecast is not allowed, sudden flood occurs, the automatic arc gate can automatically open gate flood discharge. In addition to the water level can be automatically opened in the case of special circumstances need to open or close the gate in advance, can be manually controlled at the required opening discharge or closed water storage.