Xiaolangdi water control project is the only control project that can realize large storage capacity below Sanmenxia, the main stream of the Yellow River. It can not only control the flood of the Yellow River well, but also use its sediment storage capacity to intercept sediment, adjust water and sediment, and slow down the siltation and elevation of the downstream riverbed. 1991April, the Fourth Session of the Seventh National People's Congress approved the construction of Xiaolangdi Project during the Eighth Five-Year Plan period. The preliminary project construction of Xiaolangdi Project started in September 199 1, and the main project started in September 1994, and was closed in June 1997. The first unit was connected to the grid in 2000 1 month, and the main project was fully completed by the end of 20001year, which lasted 65,438+. * * * Earth and stone excavation and filling of 94.78 million cubic meters, concrete of 3.48 million cubic meters, steel structure of 30,000 tons and resettlement of 200,000 people were completed. It has achieved good results in advancing the construction period, saving investment and excellent quality. It has been praised by the World Bank as a model of cooperation projects between the bank and developing countries and won wide praise at home and abroad. From 2002 to 2008, Xiaolangdi Project passed the safety technical appraisal, the initial acceptance of project completion and resettlement, and the special acceptance of soil and water conservation, project archives, fire control facilities, environmental protection, labor safety and health. From June 5 to February 2008, Xiaolangdi Project passed the pre-acceptance of completion technology. On April 7, 2009, Xiaolangdi Project successfully passed the completion acceptance.