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1 基本情况颖河属于淮河水系沙颍河流域,全长约350km,流域面积72.3万hm~2。南水北调总干渠在禹州市西南约4km处后屯村与颍河相交,交叉断面以上河长90km,流域面积15.8万hm~2。颍河交叉断面以上30km处有白沙水库,位于颍河上游登封、禹州两市交界处的白沙镇以北约300m,水库控制面积9.8万hm~2,总库容2.95亿m~3。白沙水库以上现有中小型水库40座,控制面积3.8万hm~2,总库容7600万m~3。白沙水库至交叉断面区间颍河支流涌泉河上游的纸坊村有纸坊中型水库,控制流域面积1.4万hm~2,总库容4145万m~3。2 交叉断面设计洪水分析
1 Basic situation Ying River belongs to the Huaihe River Basin Shaying River, a total length of about 350km, basin area of 723000 hm ~ 2. The main canal of the South-to-North Water Diversion Project intersects Ying River at about 4km southwest of Yuzhou City. The river above the cross-section is 90km long and the drainage area is 158,000m 2. The Baisha Reservoir is located 30km above the cross section of the Ying River. It lies about 300m north of Baisha Town at the junction of Dengfeng and Yuzhou cities at the upper reaches of the Ying River. The reservoir has a controlled area of 98,000 hectares and a total storage capacity of 295 million m 3. There are 40 medium and small reservoirs above Baisha reservoir, with a control area of 38,000 hm ~ 2 and a total storage capacity of 76 million m ~ 3. Baisha Reservoir to cross-section area Ying River tributary Yongquan upstream Zhifang village has paper mill medium reservoir, the control basin area of 14000 hm ~ 2, the total storage capacity of 41450000 m ~ 3.2 cross-section design flood analysis