基于马斯京根法推求入库洪水计算方法的改进

为解决采用马斯京根法计算入库洪水产生的不合理现象，根据入库洪水的基本概念探讨了入库洪水与坝址洪水的关系，基于马斯京根法分析了反推入库洪水过程产生的不合理现象，提出采用区间半分法进行迭代计算，并对初始流量的假定进行了分析，较为客观地还原了入库洪水过程、加快了迭代收敛速度、提高了计算精度。通过编制计算机程序，结合柘林水库实测坝址资料，对该方法进行了验证，实例表明该方法可应用于入库洪水计算。

Improvement of Calculating Reservoir Flood Based on Muskingum Method

In order to solve unreasonable phenomena of reservoir flood calculation with Muskingum method, the relationship between reservoir flood and dam-site flood is discussed based on the basic concept of reservoir flood. According to the Muskingum method, an unreasonable phenomenon of inverse calculating reservoir flood is analyzed. And then iterative computation based interval half-partition method is put forward. Furthermore, the assumption of initial flow is analyzed. Reservoir flood process is restored objectively and the convergence speed is accelerated, as well the calculation precision is improved. Finally, the computer program of the method is verified by observation dam-site flood of Zhelin Reservoir. Case study shows that the method can be applied to reservoir flood computation.