本文着重分析天桥径流电站水库冲淤特性和影响保持有效库容的主要因素,论证水库采取分期分级水位运行的合理性、必要性,阐述了水库运用中,在正确处理泥沙的基础上争取更多的调节库容和争取多发电的实践经验,从防御百年一遇洪水提高到防御二百年一遇洪水,从迳流发电提高到不完整日调节。 This paper focuses on the analysis of the erosion and sedimentation characteristics of Tianqiao runoff station reservoirs and the main factors that affect the effective storage capacity. The rationality and necessity of reserving staged water level in reservoirs are discussed. The adjustment of storage capacity and fight for more power generation practical experience, from the flood in the once-in-a-hundred-year defense to floods in the 200-year defense, from power generation to improve the incomplete day adjustment.