In view of the fact that the traditional large warehouse surface flat layer paving process has the inter-layer interval time overtime, and the large warehouse surface needs to be divided into multiple small warehouse surfaces for construction, resulting in the waste of warehouse resources, combined with the sub-warehouse structure, climatic characteristics and warehouse intensity of TB Hydropower Project, the large inclined layer paving method is used to achieve long-term continuous pouring, so that it is not affected by rainfall, which maximizes the utilization rate of the equipment and ensures the quality of the interlayer combination.