一、前言漫湾水电站是澜沧江中游河段梯级开发的第一期工程,也是我国第一个由水电部和云南省合资承建、全面实行分项目招标承包的大型水电工程。电站枢纽采用混凝土重力坝坝后式厂房、厂顶溢洪布置方式,拦河坝坝顶长度为 I. Introduction Manwan Hydropower Station is the first phase of cascade development in the middle reaches of the Lancang River and is also the first large-scale hydropower project in China that is jointly constructed by the Ministry of Mines and Yunnan Province and is fully implemented by sub-project contracting. Power station hub with concrete gravity dam after the plant, plant overflow spillway layout, barrage dam top length