000007689 001__ 7689
000007689 005__ 20240819142440.0
000007689 020__ $$a9781138050105
000007689 037__ $$aCHAPTER
000007689 039_9 $$a2024-08-19 14:24:40$$b1$$c2023-06-06 09:41:13$$d1001252$$c2021-12-17 15:25:13$$d0$$c2021-11-17 11:25:40$$d1001252$$c2021-05-28 23:25:13$$d0$$c2021-05-28 12:05:12$$d1000062$$c2021-05-21 14:59:14$$d0$$y2021-05-21 14:59:02$$z1000099
000007689 041__ $$aeng
000007689 245__ $$aToe-scour formation at Piano Key Weir
000007689 260__ $$aLondon$$bCRC Press
000007689 269__ $$a2017-06
000007689 300__ $$app. 147-156
000007689 506__ $$avisible
000007689 520__ $$9eng$$aBeyond their initial application on gravity dam crests as an element of an auxiliary spillway, Piano Key Weirs (PKWs) are more and more combined with weirs on rivers. Such applications comprise the level rise for river hydropower plants or to maintain a water level for inland navigation. PKWs are ungated structures, so that the “operational” risk is low. Furthermore, they have a hydraulic performant rating curve and a low risk of driftwood blocking, as compared to traditional weirs. Such a river application on a loose riverbed requests a laborious foundation, given that the structure is not directly built on rock or on dam concrete as for spillways. A key parameter for the stability of the PKW foundation is the ultimate scour-hole depth at the PKW toe. Further, measures to reduce the latter scour must be designed, as for instance a riprap protection of the riverbed downstream of the PKW. This paper reports of systematically conducted model experiments on PKW scour, and gives some indications on the parameters that are important to reduce the latter extend.
000007689 540__ $$acorrect
000007689 592__ $$aHEIA-FR
000007689 592__ $$biTEC - Institut des technologies de l'environnement construit
000007689 592__ $$cIngénierie et Architecture
000007689 700__ $$aJüstrich, Stefan$$uEPFL, Lausanne, Switzerland
000007689 700__ $$aSchleiss, Anton J.$$uEPFL, Lausanne, Switzerland
000007689 7201_ $$aErpicum, Sébastien$$ued.
000007689 7201_ $$aLaugier, Frédéric$$ued.
000007689 7201_ $$aHo Ta Khanh, Michel$$ued.
000007689 7201_ $$aPfister, Michael$$uSchool of Engineering and Architecture (HEIA-FR), HES-SO University of Applied Sciences Western Switzerland
000007689 773__ $$tLabyrinth and Piano Key Weirs III – PKW 2017 ; Proceedings of the 3rd International Workshop on Labyrinth and Piano Key Weirs (PKW 2017), 22-24 February 2017, Qui Nhon, Vietnam
000007689 8564_ $$s606572$$uhttps://arodes.hes-so.ch/record/7689/files/published%20version.pdf$$921d1133b-d7e5-4966-933a-722e18402e9b
000007689 906__ $$aNONE
000007689 909CO $$ooai:hesso.tind.io:7689$$pGLOBAL_SET
000007689 950__ $$aaucun
000007689 980__ $$achapitre
000007689 981__ $$achapitre