云南省滇中引水工程大理Ⅱ段输水线路中的董家村渡槽跨河断面上游建有普淜、邵家两座梯级中型水库，根据现有资料条件，为推求董家村渡槽跨河断面的设计洪水，按逐级同频率考虑，沿河道自上而下拟定4个分区的不同洪水地区组成方案，进行方案分析比较，从安全角度出发，以最不利于工程安全的情形考虑，优选方案，最终推求得到董家村渡槽跨河断面的设计洪水。%There are two cascade medium-sized water reservoirs called Pupeng and Shaojia respectively upstream of the Dali section II water conveyance line Dongjiacun aqueduct across a river of the water diversion works in central Yunnan province. According to the data now available 4 sub-regions with different lfood regimes were selected based on the same frequency along the river channel from upstream to downstream in order to reckon the design lfood at the cross-section of the Dongjiacun aqueduct across the river. As viewed from safety the design lfood at the cross-section of the Dongjiacun aqueduct across the river was considered optimal and selected after making comparison taking into consideration the worst inlfuence on the project.
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