Articles | Volume 16, issue 11
Research article
28 Nov 2016
Research article |  | 28 Nov 2016

Effects of Y-type spillway lateral contraction ratios on debris-flowpatterns and scour features downriver of a check dam

Huayong Chen, Jinfeng Liu, and Wanyu Zhao

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Cited articles

Abedini, M., Said, M. A. M., and Ahmad, F.: Effectiveness of check dam to control soil erosion in a tropical catchment (The Ulu Kinta Basin), Catena, 97, 63–70, 2012.
Adamkowski, A., Janicki, W., Kubiak, J., Kubiak, J., Urquiza, G., Sierra, F., and Fernández D., J. M.: Water turbine efficiency measurements using the gibson method based on special in-strumentation installed inside pipe-lines/Proceedings of the 6th International Conference on Innovation in Hydraulic Effi-ciency Measurements, Portland, Oregon, USA, 30 July–1 August, 1–12, 2006.
Adduce, C., La Rocca, M., and Sciortino, G.: Local Scour Downstream of Grade Control Structures in Urban Stream Restoration, Enhancing Urban Environment by Environmental Upgrading and Restoration Nato Science Series IV, Earth Environ. Sci., 43, 307–317, 2005.
Ben Meftah, M. and Mossa, M.: Scour holes downstream of bed sills in low-gradient channels, J. Hydraul. Res., 44, 497–509, 2006.
Bormann, E. and Julien, P. Y.: Scour Downstream of Grade-control Structures, J. Hydraul. Eng., 117, 579–594, 1991.
Short summary
A new type of spillway structure with lateral contraction was proposed to distribute debris flows after the check dam storage filled up. Experiments were performed to investigate debris flow movement, the scour feature, and some related hydraulic characteristics of debris flows under this new structure. The results indicate that this type of structure can help extend debris-flow nappe, dissipate flow energy, and reduce the scour depth downriver of a check dam.
Final-revised paper