Abstract:Wangwu Reservoir is an important national drinking water source, which ensures the drinking water safety of 300, 0o0 people in Longkou City. With the development of society, the contradiction between the water supply capacity of reservoirs and the growth of local production and domestic water use is becoming increasingly prominent. The implementation of capacity increase project can effectively alleviate the dilemma of local water resources shortage. The capacity increase project has the characteristics of long distance and wide scale, water-related operation, large-scale chain block slope protection, and difficult construction management. In order to complete the construction task with high standards and quality, the reservoir management department has set up a complete management system, with a research team in the important link of the project construction, which optimized and improved the process of concrete precast block to ensure the smooth progress of the project.