塘尾分洪闸是一座设计排洪4300秒立米的大型水闸,共23孔,每孔净宽10米,墩厚1.5米,水闸全长263米。_ 闸门的挡水面积为5米(高)×10米(宽),设计水头5米。闸门由两种型式组成,其中1至11孔为预应力钢筋混凝土管梁拼装弧形闸门,12至23孔为普通钢筋混凝土薄壳弧形闸门(简称壳体门,闸门编号由左岸算起)。闸门自1972年8月投入运用至今将近四年。 闸门采用一机启三门型式启闭。共分8组(其中第10孔和第11孔用一机启二门),第5～8组是薄壳闸门,每门二个吊点,设于迎水面下部。 Tong tail floodgate is designed to flood 4300 seconds cubic meters of large sluice, a total of 23 holes, each hole net width of 10 meters, 1.5 meters thick pier, sluice length of 263 meters. _ The gate of the water area of ​​5 meters (height) × 10 meters (width), head design 5 meters. The gate consists of two types, of which 1 to 11 holes are prestressed reinforced concrete pipe beam assembled arc gate, 12 to 23 holes for ordinary reinforced concrete shell arc gate (referred to as the shell door, gate number from the left bank) . The gate has been in operation since August 1972 for almost four years. The gate uses a machine Kai three door type opening and closing. Divided into 8 groups (of which 10 holes and 11 holes with a machine Kai 2), the first 5 to 8 group is a thin-walled gate, each of the two lifting points, located in the lower Ying-face.