一、概述龙羊峡水电站枢纽主要建筑物由混凝土重力拱坝(最大坝高为177米),坝后地面厂房(装有4×32=128万千瓦水轮发电机组),及泄水建筑物等所组戍。泄水建筑物包括有表孔溢洪道、中孔、深孔和底孔泄水道。底孔泄水道位于最低层,它担负着向下游供水、初期泄洪、排沙及放空水库等任务。 I. Overview Longyangxia Hydropower Station hub of the main buildings by the concrete gravity arch dam (maximum dam height of 177 meters), the dam after the ground plant (equipped with 4 × 32 = 1.28 million kilowatts hydro-generating units), and drainage structures Such as group Shu. Drainage structures include surface spillways, mesopores, deep and bottom drains. Bottom hole drains located at the lowest level, it is responsible for the downstream water supply, initial discharge, sediment discharge and emptying reservoirs and other tasks.