奔流大江按下“暂停键” 雅砻江流域首次实现两座大型水电工程同步截流

Core Viewpoint - The simultaneous river diversion of the Mengdigou and Yagen Hydropower Stations marks a significant milestone in the construction of large-scale hydropower projects in the Yalong River basin, facilitating the transition to the main construction phase of the projects [1][2]. Group 1: Project Details - The total installed capacity of the two hydropower stations is 2.7 million kilowatts, and this is the first time that large-scale hydropower projects in the Yalong River basin have achieved simultaneous river diversion [1]. - During the river diversion process, approximately 90,000 cubic meters of fill material were used, completed in less than 30 hours, which is crucial for subsequent excavation and concrete pouring [2]. Group 2: Environmental Impact - Once operational, the two hydropower stations are expected to save about 3.5 million tons of standard coal annually and reduce carbon dioxide emissions by approximately 9 million tons [4]. - The Mengdigou Hydropower Station will enhance grid capacity and support the development of wind and solar energy projects, potentially increasing its scale by 1.6 times [4]. Group 3: Strategic Importance - The timely river diversion and accelerated construction of the two hydropower stations will unlock the potential of the Yalong River as the first integrated water-wind-solar energy base in the country, enhancing the role of hydropower in peak load management within the power grid [7].