lower gate meaning in English

下游闸门

Fix that lower gate
修好下面那道门了？
The power station is diversion type power station of low gate dam with a normal storage level of 1268 . 0 m , a highest gate dam level of 31 meters and a reservoir capacity of 2 , 974 , 000 cubic meters , the length of diversion tunnel of which is 19 . 57 kilometers , installed capacity is 360mw futang power station is constructed on the basis of deep and thick overburden , the foundation of which mainly consist of five overburdens which , in general , belong to multiple , complex foundation
福堂水电站位于四川省阿坝藏族羌族自治州汶川县境内的岷江河段上，电站为低闸引水式开发。正常蓄水位1268 . 0m ，最大闸高31m ，库容297 . 4万m ~ 3 ，引水隧洞长19 . 57km ，装机360mw 。福堂水电站闸坝建于深厚覆盖层基础上，基础主要存在五大覆盖层，总体属于多层复杂地基。