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一、概况 南阳滩水利枢纽为一综合利用工程,位于四川省达县地区的渠县境内,是渠江干流梯级开发中的第一个梯级,控制流域面积31229km~2。 渠江系嘉陵江左岸的一大支流,全长655km,流域面积40584km~2。上游分两支,一为巴河,一为洲河(图1),均发源于著名的大巴山暴雨中心区。渠江洪水在全川最为突出,具有汛期长、洪水出现频繁、峰高量大、陡涨陡落,过程尖瘦,以及洪枯流量、水位变幅大等特点。
I. Introduction Nanyangtan Water Control Project is a comprehensive utilization project located in Daxian, Daxian, Sichuan Province. It is the first cascade in the cascade development of the drainage canal and covers an area of 31229km ~ 2. Qujiang River Jialing River left bank of a major tributary, a total length of 655km, the basin area of 40584km ~ 2. Upstream divided into two branches, one for the Ba River, a continent River (Figure 1), are originated in the famous Dabashan rainstorm center. The flood of Qujiang River is the most prominent in the whole Sichuan. It has the characteristics of long flood season, frequent flooding, large peak height and steep steep rise and fall, sharp process, heavy flood flow and large water level fluctuation.