大藤峡水电站厂房总体设计布置

General Design and Layout of Datengxia Hydropower Station

大藤峡水电站为低水头大流量河床式电站,共安装8台200 MW轴流转浆式水轮发电机组,多年平均发电量60.55亿kW·h,尽早实现机组发电经济效益显著。电站建筑物主要包括主机间、安装间、出线场、拦沙坎、拦漂排等结构,结合施工导流,电站采用左、右两岸布置方案,在结构设计上采取了预应力钢筋混凝土蜗壳、优化分层分块等多项优化措施,使得工程施工总工期最短,首台机组发电最早。电站布置方案及厂房结构优化设计可为其他同类工程设计提供参考和借鉴。

Datengxia hydropower station is a riverbed power station with a low water head and large flow.It is installed with eight 200 MW axial-flow paddle turbine generating sets,with an average annual generating capacity of 6.055 billion kW·h,which makes early and remarkable economic benefits of generating sets possible.The buildings in the station mainly include the main engine room,installation room,outgoing line yard,sand retaining barrier,and drift retaining row.In combination with the construction diversion,the station adopts a left-and-right bank layout scheme and employs measures to optimize the prestressed reinforced concrete spiral case and layers and blocks in structural design,so as to minimize the project s total construction period and ensure the earliest power generation of the first set.The layout scheme and the optimal design of the station can provide a reference for other similar engineering designs.