The influence of sustainable measures on runoff hydrograph from an urbanized drainage area
Vpliv sonaravnih ukrepov na hidrogram odtoka z urbaniziranega prispevnega območja
- Avtorji: Maja Štajdohar, Mitja Brilly, Mojca Šraj
- Citat: Acta hydrotechnica, vol. 29, no. 51, pp. 145-162, 2016.
- Povzetek: Urbanizacija spremeni lastnosti prispevnega območja in vpliva na posamezne komponente hidrološkega kroga. Povečajo se volumni površinskega odtoka, padavinska voda odteče hitreje, posledično pa se povečajo tudi konice pretokov. V raziskavi smo s pomočjo hidrološkega modela, ki smo ga vzpostavili s programskim orodjem HEC-HMS, preverili, za koliko lahko s sonaravnimi ukrepi, ki zadržijo površinski odtok čim bližje mestu nastanka, zmanjšamo volumne odtoka in konice pretokov na manjšem prispevnem območju v širšem središču mesta Ljubljane. Ugotovili smo, da so sonaravni ukrepi v tem pogledu učinkovitejši v primeru manjših padavinskih dogodkov s krajšo povratno dobo. S kombinacijo različnih ukrepov lahko v primeru dogodkov s povratno dobo, krajšo od enega leta, volumne odtoka in konice pretokov z obravnavanega območja zmanjšamo do 45 %, v primeru dogodka s 100-letno povratno pa lahko volumen odtoka zmanjšamo za 12 %, konico pretoka pa za 10 %.
- Ključne besede: sonaravni ukrepi, površinski odtok, urbanizacija, ponikanje, zelene strehe, programsko orodje HEC-HMS
- Polno besedilo: a29ms2.pdf
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