Bezpečnostní přeliv

Šachtový bezpečnostní přeliv

Bezpečnostní přeliv je objekt vodního díla, sloužící jako ochrana proti přelití hráze. Umožňuje bezpečný odtok přebytečné vody (např. při povodni) přes hráz.[1] Přeliv se dle typu skládá z přelivné hrany (hrazené nebo nehrazené), spadiště, odpadu, skluzu a vývařiště. Aby se zamezilo případnému ucpání, staví se před přelivnou hranu česle.

Typy přelivů

Bezpečnostní přeliv vodní nádrže Nechranice
  • přímý (čelní) nebo korunový (umístěn v tělese hráze, v její koruně)
  • boční (umístěn mimo těleso hráze, v břehu)
  • kašnový (těleso přelivu je vysunuto do nádrže, voda padá přes přelivnou hranu do spadiště)
  • šachtový (voda je odváděna šachtou v tělese hráze)
  • propustkový (trubka v koruně hráze v úrovni maximální hladiny nádrže)
  • kombinovaný
  • speciální (např. nouzové)

Odkazy

Reference

Externí odkazy

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