关键词: 防洪能力, SCS 单位线, 海外资料匮乏地区, 中小型水电工程

Abstract: Based on the measured rainfall data in adjacent areas, this paper analyzes the distribution law of regional rainstorm, and uses statistical analysis method and contour map method to compare and analyze the design rainstorm. Through collection and utilization of reservoir operation data, the rain ⁃ storm time history distribution and runoff generation and concentration parameters are analyzed and se ⁃ lected in combination with domestic design experience. The SCS method and IWHA rational method are used to calculate the design flood of dam site, and the flood regulation calculation is carried out. Accord ⁃ ing to calculation, the layout of Kirirom Ⅲ hydropower station can meet the flood control requirements. The research method fully utilizes the measured data, providing reference for flood control design of small and medium-sized hydropower projects in overseas regions with scarce data, especially in South ⁃ east Asia.

Key words: flood control capacity, SCS unit hydrograph, overseas area with scarce data, small and me ? dium-sized hydropower project