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二滩水电站金属结构由泄洪系统、发电引水系统和施工导流系统三部分组成。钢材总用量约2.5万吨(见附表)。发电引水系统和施工导流系统的金属结构为一般尺寸和水头,选择常用的平面闸门、门机和油压启门机即可。而泄洪系统的闸门都是在高水头下工作的,技术复杂。其金属结构包括三个部分:七个溢流表孔、六个泄水中孔和右岸两条直径为13米的泄洪隧洞。现将泄洪系统的金属结构布置和选型介绍如下。
Ertan hydropower station metal structure by the flood discharge system, power generation system and drainage diversion system composed of three parts. The total amount of steel is about 25,000 tons (see attached table). Power generation water diversion system and construction of the diversion system for the general structure of the metal size and head, the choice of commonly used flat gate, door and hydraulic door opener can be. The floodgate system gates are working under high head, technical complexity. The metal structure consists of three sections: seven overflow holes, six drainage holes and two 13m diameter tunnels on the right bank. Discharge system will now layout of the metal structure and selection are described below.