Engineering and technology

     The project scale of Lower Sesan 2 Hydropower Project is determined as Rank I large-sized (1) project. Its main permanent structures (dam, discharging structures and water conveyance and power generation structures) are designed as per Grade 1 structures and secondary structures as per Grade 3 structures.
      
本工程规模为一等大(1)型,主要建筑物包括拦河坝、泄水建筑物、引水发电建筑物等均按1级建筑物设计,其余次要建筑物按3级建筑物设计。
    
The dam type is designed including homogeneous earth dams located on both banks, powerhouse and spillway located on left and right part of the riverbed, water retaining concrete gravity dam between the spillway and powerhouse, and the concrete side wall between the concrete dam and earth dam.
      
设计坝型包括布置于两岸的岸坡均质土坝、分别布置于河床左右侧的发电厂房和泄洪坝、连接泄洪坝和发电厂房的挡水重力坝,以及连接混凝土坝及土坝的混凝土侧墙。
    
The construction of the project including the construction of its hydraulic structures, manufacturing and installation of mechanical-electrical equipment, construction of the transmission line and other engineering works. The main technologies involved during the construction are: excavation of open channel, building the earth-rock cofferdam, supporting the bank slope, foundation treatment, reinforced concrete placement, fabrication and lifting of the prefabrications, installation of the pre-stressed anchor cable, manufactory and installation of the radial gates, bulkhead gates, trash-rash, gantry crane, bridge crane and other metal structures, assembly of the bulb turbine-generator units, installation of the electrical control system and the construction of the transmission project connecting to the Cambodian 230kV national power grid. Various of technologies has been adopted for this project with extremely high technical requirement. The construction of the Project, including its process control and acceptance check will be according to the Chinese technical standards.
      
电站建设涉及水工建筑、机电金结设备制作安装及送出电网施工等项目,主要技术包括土石方明挖、土石围堰填筑、岸坡支护、基础处理、钢筋混凝土施工、预制件制作与吊装、预应力锚索施工,弧形闸门、平板闸门、拦污栅、门桥机等金属结构制作与安装,贯流式水轮发电机组安装、电气控制系统安装,以及接入柬埔寨电网的230KV送出工程建设等,涉及技术面广、技术要求高。工程建设采用中国技术与标准进行控制与验收。