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出水洞水库位于珠江流域南盘江水系马别河支流猪场河上,以工业供水为主,兼顾人畜饮水和灌溉。水库枢纽主要由混凝土面板坝、溢洪道和引水隧洞等组成。溢洪道位于左岸,是水库仅有的泄洪建筑物。溢洪道进口处山体覆盖层较厚,槽身处山体沟谷发育,出口处河谷狭窄,岸坡陡峻,布置局限性比较大。设计结合枢纽总布置,合理利用进出口沟谷,采用驼峰堰增加泄流能力,对开挖边坡进行系统分析,通过挑流将下泄水流直接挑入河道,较好地解决了泄洪建筑物的布置问题。该文对此溢洪道设计进行了总结,可供类似工程参考。
Water hole reservoir is located in the Pearl River basin Nanbian River Maube tributary of pig farm river, mainly to industrial water supply, taking into account the drinking water and irrigation of livestock and poultry. The reservoir hub is mainly composed of concrete dam, spillway and diversion tunnel. The spillway is located on the left bank and is the only flood discharge structure in the reservoir. At the entrance of the spillway, the mountainous cover is thick, with the trough at the mountain gully, the narrow valley at the exit, the steep slope and the large layout limitation. Design combined with the hub layout, rational use of import and export valleys, the use of humpback weir to increase the discharge capacity of the slope for systematic analysis of the excavation, the discharge flow through the pick directly into the river, a better solution to the layout of flood discharge buildings problem. This paper summarizes the design of the spillway for reference to similar projects.