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首部枢纽包括拦河闸坝,高、低进水闸,高、低引水明渠,沉沙池等建筑物。各建筑物的布置型式及主要结构尺寸,见附图1。
The first hub includes dam gates, high and low intakes, high and low water diversion channels, desilting ponds and other buildings. The layout of the various types of buildings and the main structure size, see Figure 1.