大峡水电站采用河床式厂房，一机一缝，每个机组段左侧设一排沙底孔。结构分析除采用常规方法，还进行厂房坝段整体性三维有限元分析，全面了解了厂房位移、应力状态及河床式厂房结构特点。为加快施工进度，对混凝土浇筑分层分块采取相应措施，经分析取消了尾水管段封闭块，大量采用预制混凝土构件，为工程提前发电提供了条件 Daxia Hydropower Station using river-type plant, a sewing machine, the left of each unit set a row of sand bottom hole. Structural analysis In addition to using conventional methods, but also for the integrity of the plant dam three-dimensional finite element analysis, a full understanding of the plant displacement, stress state and riverbed plant structure characteristics. In order to speed up the construction progress, the concrete pouring stratified block to take appropriate measures, the analysis of the elimination of the closed section of the draft tube, a large number of precast concrete structures, the project provides the conditions for advance power generation