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从几年来连续严重旱灾和水利水电建设中出现的问题来看,在水利枢纽建设中,应该考虑在干旱年份,供给水利枢纽下游地区的农田灌溉用水;降低库水位,满足大坝检修等特殊要求。为了满足上述要求,必须在水利枢纽中相对高程较低的部位,设置深式泄水道(孔)。但设置这种泄水道,必然要给水利枢纽建筑物带来高水头、高流速等复杂的技术问题。本文拟就其中某些问题提出个人的看法,供有关部门参考。
According to the problems that have occurred in successive serious drought and water conservancy and hydropower construction in recent years, irrigating water for farmland supply in the downstream area of water conservancy hub should be taken into consideration in the construction of the water conservancy project; to reduce the reservoir water level and meet the special requirements . In order to meet the above requirements, deep drainage channels (holes) must be provided at relatively low elevation areas in the water control project. However, setting such a drainage channel will inevitably bring complicated technical problems such as high water head and high flow velocity to the water conservancy complex. This article intends to put forward some personal views on some of these issues for reference by relevant departments.