引水式水电站尾水出口挡沙坎结构形式设计研究和应用

wf(2015)

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Abstract
为适应现场施工条件及施工工期要求,锦屏二级水电站利用原有施工围堰改建成尾水隧洞出口的挡沙坎.经研究论证表明,改建后的挡沙坎结构形式合理,而且对尾水出流流态和发电效益影响不大.新的设计结构形式降低了施工难度,改善了检修条件,缩短了施工工期,实现了设计目标,达到了预期效果,可为类似引水式电站尾水出口工程建设提供参考.
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Key words
tailrace outlet,cofferdam,sand-guide sill,diversion-type hydropower station,Jinping Ⅱ Hydropower Station
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