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Določanje zrnavosti grobih agregatov in sedimentov z analizo slik [Elektronski vir] = Optical granulometry of coarse aggregates and sedimentsMatič, Maja, gradbenica, vodarka ; Bezak, Nejc, hidrologija ; Mikoš, MatjažZa določanje zrnavosti materiala se namesto klasičnih postopkov, kot je sejalna analiza, lahko uporabi tudi analiza slik. Podatek o zrnavosti je v vodarski stroki pomemben za različne praktične ... aplikacije, kot so izračun premestitvene zmogljivosti v vodotokih, načrtovanje hidrotehničnih objektov ali modeliranje drobirskih tokov. Testirali smo programa WipFrag in Basegrain, in sicer na primeru skalnega podora Belca in prodišča Save Dolinke pri Mojstrani. V obeh primerih smo posneli več slik z različnih višin, izvedli smo tudi sejalno analizo odvzetih vzorcev. Rezultate obeh programov za analizo slik smo primerjali z rezultati sejalne analize. Rezultati so pokazali, da je program WipFrag dal bolj primerljive rezultate s sejalno analizo. Program WipFrag je dal nekoliko boljše rezultate v primeru skalnega podora Belca kot v primeru rečnega prodišča. Program Basegrain je po drugi strani v obeh primerih dal podobno primerljive rezultate. Oba programa sta v večini primerov podcenila velikosti zrn v primerjavi z rezultati sejalne analize. V nekaterih primerih so relativne razlike znašale tudi blizu 100 %. Po drugi strani pa izbrani statistični test ni pokazal na statično značilno razliko med rezultati sejalne analize in rezultati analize slik v obeh programih. Optimalne rezultate analiz slik smo pridobili na podlagi slik, posnetih s stojne višine okrog 1,5%2 m, zato predlagamo, da se slike kamenih agregatov, erozijskega drobirja in rečnih sedimentov za namene določanja njihove zrnavostne sestave zajemajo z višine okoli desetkratnika maksimalnega premera analiziranega materiala.Source: Acta hydrotechnica [Elektronski vir]. - ISSN 1581-0267 (Letn. 32, št. 56, 2019, str. 59-71)Type of material - e-articlePublish date - 2019Language - slovenianCOBISS.SI-ID - 8988001
Author
Matič, Maja, gradbenica, vodarka |
Bezak, Nejc, hidrologija |
Mikoš, Matjaž
Topics
analiza slik |
WipFrag |
Basegrain |
sejalna analiza |
agregati |
sedimenti |
določitev zrnavosti |
analysis of digital images |
WipFrag |
Basegrain |
sieve analysis |
aggregate |
sediments |
determination of granularity
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Matič, Maja, gradbenica, vodarka | |
Bezak, Nejc, hidrologija | 35409 |
Mikoš, Matjaž | 08245 |
Source: Personal bibliographies
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