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堆石溢流壩,一般地是适合于低水头的壩。在近数年来,技术科学候补博士H·H·别辽雪夫斯基研究出堆石溢流壩的一些改良型式。在岩石基础上,高达10公尺的堆石溢流壩,其型式可如图1、a,这时在壩的下游部份,泄流的最大流速不超过10～12公尺/秒。在砂和砂砾冲积层上高达7.0公尺的堆石溢流壩,认为较适合的型式如图1、б。如果考虑在高达5.0公尺的堆石溢流壩上在枯水季通车时,则较适合的壩型示于图1、B。在堆石工作完成得很好的条件下,岩石基础上堆石溢流壩的沉陷将达壩高的0.5％,在非岩石基
Rockfill overflow dam, generally suitable for low head dam. In recent years, H. H. Bielshevsky, a candidate for the science of science, has developed some improved forms of a rock-overflow dam. On the basis of rock, rockfill overflow dam up to 10 meters in diameter, the type can be shown in Figure 1, a, then the downstream part of the dam, the maximum flow velocity does not exceed 10 to 12 meters / second. In the sand and gravel alluvium up to 7.0 meters of rockfill overflow dam, that a more suitable type shown in Figure 1, б. A more suitable type of dam is shown in Figure 1, B, if consideration is given to the opening of a rock-spill dam up to 5.0 meters in the dry season. Under the condition that the rockfill work is completed well, the subsidence of the rockfill overflow dam will reach up to 0.5% of the dam height,