中文摘要：

研究三峡水库汛期水位控制运用方案,对于充分发挥三峡水库的综合效益具有重要意义。本文在分析三峡水库洪水季节性变化规律的基础上,综合多种分期方法的结果得出三峡水库汛期分期方案,并按照规范推求分期设计洪水。根据不同分期的来水情况分别拟定防洪调度规则,在确保防洪安全的前提下,利用分期设计洪水调洪演算确定汛前期和汛末期汛限水位,采用预报预泄方法确定主汛期水库水位控制运用方案。历史资料和随机生成的长径流系列调洪演算结果表明：所拟定的三峡水库汛期水位控制运用方案安全可靠、合理可行,可显著地提高三峡水库的兴利效益。

英文摘要：

Storage level control during flood seasons is important to the operation and benefits of the Three Gorges reservoir（TGR）. This paper analyzes the seasonal variation of reservoir inflow hydrographs,combines several multi-stage methods,and finally obtains a synthetic scheme of TGR storage level control. The scheme is obtained by three steps,adopt a different flood operation rule for each flood stage,determine the storage level limits before and after flood time by flood routing calculation to satisfy the safety requirements,and formulate an operation scheme through pre-release forecast. In comparison with the existing scheme,the power generation of TGR would be considerably increased. Verification based on a synthetic inflow series generated by a first- order autoregressive model shows the applicability and reliability of the proposed scheme.