云南省昭通渔洞水库复合式表层取水闸门设计

Design of composite gates for diverting surface layer water

在温带半湿润季风气候区，运用复合式取水闸门引水库表层水灌溉农田，可避免取水库底层水时水温偏低，不利于农作物生长的问题。云南昭通渔洞水库干渠取水闸门采用滑移式半圆筒型闸门，与不同高程的孔口连通引水，通过微机控制闸门随库水位变化而自动升降；在输水竖井中设有中、低、底３扇平板挡水闸门，由可伸缩的套接式拉杆连接；下游出口输入廊道选用弧形工作闸门控制。该复合式取水闸门结构合理、操作简便，可满足灌区农作物对灌溉水温的要求。

In semi-humid monsoon climatic areas in the temperate zone, adopting compound gates to divert surface-layer water from a reservoir for irrigating farmland can avoid taking low-temperature water from bottom layer of the reservoir which is unfavourable to the growing of crops. A semiˉcylindric sliding gate is adopted to divert water from Yudong reservoir in Zhaotong of Yunnan Province to the main canal. The gate can be communicated with outlets at different elevations,and can be automatically lifted or lowered by micro-computer control according to the changes in reservoir level. Three plane gates, including the middle, low and bottom gate, are provided in the conveyance shaft,and connected by telescope joint-type hoist rods which are capable of being lengthened and shortened. The downstream exit of the conveyance tunnel is controlled by a taintor gate. The compound gates are reasonable in structure, convenient in operation, and can meet the requirements for diverting water with temperature suitable to crops in the irrigation area.