溢洪道(英语:spillway)系指水坝或堰的构造物,功能在于排除宣泄超过水库容量之多馀洪水,防止溢顶而破坏坝体,以确保水坝的安全[1][2]。依照溢流泄方式之不同,溢洪道可区分为自由溢流式溢洪道(overflow spillway)及闸门控制式溢洪道[2];又依照泄水构造物形式,可分为隧道式溢洪道、陡槽式溢洪道(chute spillway)、钟口型溢洪道(bell-mouth spillway 或 morning glory spillway,又称为喇叭形溢洪道)、侧槽溢洪道(side channel spillway)、管流式溢洪道(pipe spillway)、虹吸式溢洪道(siphon spillway)、坝堰式溢洪道等[1]。溢洪道并不一定建造在坝身建筑物上,亦可在坝址附近另行兴建溢洪道,例如侧槽溢洪道即离开坝身[1]。
范例
参考资料
Wikiwand in your browser!
Seamless Wikipedia browsing. On steroids.
Every time you click a link to Wikipedia, Wiktionary or Wikiquote in your browser's search results, it will show the modern Wikiwand interface.
Wikiwand extension is a five stars, simple, with minimum permission required to keep your browsing private, safe and transparent.