调水调沙如何改变黄河

Core Viewpoint - The article discusses the implementation and impact of the "water-sand regulation" theory on the Yellow River, highlighting its significance in managing sediment and improving flood control capabilities. Group 1: Water-Sand Regulation Implementation - On June 28, the Xiaolangdi Water Control Project increased its water and sediment discharge to 4,600 cubic meters per second, marking the seventh day of its operation [2] - As of June 29, the total water discharged from Xiaolangdi exceeded 1.8 billion cubic meters [2] - The project utilizes a digital twin platform for dynamic analysis and scientific scheduling to ensure effective water-sand regulation [2] Group 2: Historical Context and Technological Innovations - Since 2002, the Yellow River Water Resources Commission has pioneered the "water-sand regulation" theory, conducting multiple tests and operational runs to manage sediment effectively [3] - The cumulative sediment cleaning in the downstream riverbed has exceeded 2.1 billion cubic meters, significantly improving flood capacity from below 2,000 cubic meters per second to over 5,000 cubic meters per second [3] - The establishment of the world's first mathematical model for water-sand regulation has enabled precise calculations for sediment transport [3] Group 3: Environmental and Ecological Benefits - The regulation efforts have provided 1.46 billion cubic meters of ecological water to the river delta, supporting wetland restoration and biodiversity [4] - The integration of traditional wisdom with modern technology in water-sand regulation has been recognized with a national science and technology progress award, showcasing its potential as a model for global river management [4]