000190041 001__ 190041
000190041 005__ 20190416220720.0
000190041 020__ $$a978-1-315-81290-8 000190041 02470$$2ISI$$a000350282900027 000190041 020__$$a978-1-138-00085-8
000190041 037__ $$aCONF 000190041 245__$$aEffect of driftwood on hydraulic head of Piano Key weirs
000190041 269__ $$a2013 000190041 260__$$bErpicum et al., CRC Press, Boca Raton$$c2013 000190041 336__$$aConference Papers
000190041 500__ $$a[942] 000190041 520__$$aDriftwood is often transported by a river course during flood events and can be problematic where it accumulates at hydraulic structures. Near obstacles, driftwood can block and thus reduces the open flow area for water passage, resulting in a lowered discharge capacity combined with increasing flow depths in the upstream region. The blocking of driftwood at weirs and spillway inlets is of particular interest, as it may affect the safety of such structures by drastically reducing the maximum spilling capacity. The high discharge efficiency of Piano Key weirs (PKWs), relative to linear weirs, may influence driftwood collection. The flow depth over a PKW for a given discharge will be less than would be required by linear structures, thus providing less flow momentum per unit weir length for flushing driftwood. If the catchment is forested, the potential effects of driftwood on the PKW head-discharge relation should be considered as part of the hydraulic design process. This paper describes systematic model tests considering the effect of driftwood on the PKW discharge efficiency. Trunks and rootstocks were supplied upstream of different laboratory-scaled PKW configurations. The test series closely approximated real-world conditions by investigating the nature of driftwood accumulations on the PKW discharge efficiency.
000190041 6531_ $$aPiano Key weirs 000190041 700__$$0244418$$g202221$$aPfister, Michael
000190041 700__ $$g112841$$aSchleiss, Anton$$0241228 000190041 700__$$aTullis, Blake
000190041 7112_ $$dNovember, 20-22, 2013$$cParis$$a2nd International Workshop on Labyrinth and Piano Key Weirs - PKW 2013 000190041 773__$$tProceedings of the 2nd International Workshop on Labyrinth and Piano Key Weirs - PKW 2013$$q255-265 000190041 8564_$$uhttps://infoscience.epfl.ch/record/190041/files/2013_942_pfister_Schleiss_Tullis_Effect_of_Driftwood_PKW_2.pdf$$zn/a$$s972064$$yn/a 000190041 909C0$$xU10263$$0252079$$pLCH
000190041 909C0 $$pPL-LCH$$xU10263$$0255473 000190041 909CO$$qGLOBAL_SET$$pconf$$pENAC$$ooai:infoscience.tind.io:190041 000190041 917Z8$$x206365
000190041 917Z8 $$x206365 000190041 917Z8$$x148230
000190041 937__ $$aEPFL-CONF-190041 000190041 973__$$rREVIEWED$$sPUBLISHED$$aEPFL
000190041 980__ aCONF