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单级水跃消力池、消力库以及挑流鼻坎等传统的消能方法,也许对高坝溢洪道的消能都不适合,因为高坝溢洪道末端的流速很高,尾水深度不足,或现场条件不相适应.可以采用每级跌水均设有消力池的梯级跌水来改变可适应的溢洪道.这种溢洪进能建筑在坝下游的河谷岸边上.梯级消力池的相互关系业已推导出来,并被位于中喜马拉雅的恒河(Gunga)峡谷内,巴基拉堤(Bhagirathi)河上,高714.760(口尺)(218.00m)德里(Tehri)坝溢洪道的数值实例所验证.
Conventional energy dissipation methods, such as single-stage hydrodynamic weakening pool, negative energy pool and pick-and-reach ridge, may not be suitable for dissipating energy from spillway of high dam because of the high velocity at the end of spillway and insufficient depth of tailwater, Or on-site conditions do not meet.Each level can be used to drop each have a cascade of falling water cascade to adapt to adapt to the spillway.This spillway can be built on the bank downstream of the dam on the bank of the cascade Has been derived from the numerical example of the spillway of the Tehri dam in the Gunga Canyon in the Central Himalayas on the Bhagirathi River at a height of 714.760 m (218.00 m) verification.