马金溪河流综合治理工程水文计算与分析

Hydrological Computation and Analysis of Majinxi Comprehensive Control Project

以马金溪流域下游密赛水文站资料为依据,分析了其实测较大洪水特征值表,推求计算了马金溪流域洪水特征值,根据水文年鉴得到了密赛水文站的历史调查洪水成果;进而推求计算了马金溪河流控制断面的设计洪水.根据开化县钱江源水库工程可行性研究,计算了各规划工况设计洪水,认为钱江源水库单库调度原则为:20年一遇洪水时,水库控制下泄流量≤300 m^3/s.

The characteristic value table of the measured larger flood is analyzed,and the flood characteristic values of Majinxi River are also calculated on the basis the data of Misai Hydrometric Station in the downstream of Majinxi River,and the historical survey results of floods in Misai Hydrometric Station are obtained according to Hydrologic Data Yearbook.Further,the design food at the control cross-section of Majinxi River is calculated.According to the feasibility study report of Qianjiangyuan Reservoir Project located at Kaihua County,after calculating all kinds of design flood under the planned conditions,it comes to the conclusion that the scheduling principles of single reservoir of Qianjiangyuan Reservoir shall be as follows： the let-down flow rate of the single reservoir shall be controlled within 300 m^3/s when encountered with the heaviest flood in 20 years.