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拆除旧发电洞进水闸室,新建泄洪洞进水塔;洞身段是利用旧洞洞身段并扩建而成,由原直径1.9 m的圆形断面改扩建为4.7 m净高的城门洞型断面;出口段为渐扩式矩形槽,出口水流直接进入主河道。
Demolition of the old power generation cave into the water chamber, the new flood tower inlet tower; the body section is the use of the old hole section and the expansion made from the original diameter of 1.9 m circular section of the expansion and expansion of 4.7 m net height of the city gate section; The outlet section is a divergent rectangular groove, the outlet flow directly into the main channel.