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1 工程概况中线南水北调为国家“八五”重点工程。索河渡槽及退水闸位于河南省郑州市荥阳县东北约7km 处。其中渡槽所在中线南水北调总干渠段桩号为 NB082+598～NB082+851,设计渠底高程113.33m,进口水位120.43m,出口水位120.32m,渠底宽约50m。与之毗邻渡槽上
1 Project Overview Central South Water North to the national “85 ” key project. The Suo River Aqueduct and its retreat gate are located at about 7km northeast of Xingyang County, Zhengzhou City, Henan Province. Among them, the middle station of the aqueduct is from the NB-82 + 598 to NB082 + 851 in the main canal section of the South-to-North Water Diversion Project. The elevation of the designed channel bottom is 113.33m, the inlet water level is 120.43m, the outlet water level is 120.32m and the canal bottom width is about 50m. Adjacent to the aqueduct