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1 前言三义寨引黄工程是1958年兴建的大型引黄灌溉工程。1992年又兴建了新三义寨引黄工程,建设了商丘总干、东分干及沉沙条渠等。经过演变,目前三义寨引黄工程已形成三个灌区(1)兰考东方红提水灌区,该灌区设计灌溉面积14.86万亩,年引水量4014万m~3,年引沙量22.62万m~3;(2)三义寨开封灌区,该灌区设计灌溉面积48.63万亩,补水面积
1 Introduction Sanyi Village Yellow River Diversion Project is a large-scale project to divert water from the Yellow River in 1958. In 1992 and the construction of the new Sanyi Village Yellow River Diversion Project, the construction of the total trunk Shangqiu, east sub-stem and sediment discharge and other channels. At present, three irrigated areas have been formed in the Yellow River Diversion Project of Sanyi Village (1) Lankao Dongfanghong Water Supply Irrigation District. The irrigated area has an designed irrigated area of 148,600 mu with annual water discharge of 40.14 million m 3 and annual sediment discharge of 22.62 million m ~ 3; (2) Sanyi Village Kaifeng Irrigation District, the irrigated area of 486,300 mu of irrigation design, replenishment area