On November 4, the Dongzhuang Water Conservancy Project, constructed by Sinohydro Bureau 3, Sinohydro Bureau 4, Sinohydro Bureau 8, Sinohydro Bureau 14, Sinohydro Bureau 15, and Sinohydro Foundation Engineering, and supervised by Northwest Institute, officially began impoundment with the lowering of its gates.

The Dongzhuang Water Conservancy Project is located in Liquan County, Xianyang City, Shaanxi Province. Its concrete double-curvature arch dam has a maximum height of 230 meters, a total reservoir capacity of 3.276 billion cubic meters, and an annual total water supply of 435 million cubic meters. The project's development tasks focus primarily on flood control and sediment reduction, while also accommodating comprehensive uses such as water supply, power generation, and ecological improvement.

As one of the 172 major water conservation and water supply projects designated by the State Council, the project has set five world records: "the world's first extra-high arch dam with flood control and sediment reduction as its primary task," "the world's extra-high arch dam with the highest sediment concentration and unit water-sediment load," "the world's first extra-high arch dam built on a suspended-type river valley," "the world's largest-scale and deepest-hole water conservancy project for reservoir area seepage control," and "the world's first water conservancy project whose secondary dam uses rock-filled concrete."

During construction, the concrete double-curvature arch dam of the Dongzhuang Water Conservancy Project faced construction difficulties such as extremely complex geological conditions, high-sediment-concentration flow conditions, super-large-volume concrete, and high-altitude long-span operations. In response to these key and difficult construction items, the supervision center adopted measures including the application of supervision robots; dynamic quality control of major raw materials; strict implementation of the first-piece system; BIM modeling application; and technologies such as cantilever prefabricated formwork for the concrete double-curvature arch dam and the first-phase direct embedding technology of gate slot cloud vehicles. Under the premise of improving supervision efficiency and ensuring project quality, these measures substantially reduced construction safety risks and accelerated on-site construction progress. The safety, quality, and schedule objectives required by the dam project contract were successfully completed, reaching a national advanced level with an average monthly rise of 6.9 meters and saving approximately 270 days of effective construction time.

Upon completion, the project will become the water conservancy project with the largest reservoir capacity and the highest dam in Shaanxi. Within 50 years, it is expected to reduce sediment entering the Wei River by 3 billion tons and sediment entering the Yellow River by 2.5 billion tons. In addition, by retaining floodwater and regulating water and sediment, it can effectively raise the flood control standard of the lower Jing River, safeguard flood control for nearly 1.5 million people and 800,000 mu of farmland in 9 counties (districts) of the three cities of Xi'an, Xianyang, and Weinan, comprehensively improve irrigation conditions in the "drought belt" area of northern Weibei, significantly improve the ecological environment of the Jing-Wei River basin, and promote ecological protection and high-quality development of the Yellow River basin.