Abstract
A debris flow is a flow of sediment-fluid mixture. Four key features in momentum exchange of debris flows are fluid viscosity, turbulence, particle sliding friction, and particle collision. Debris flows were qualitatively classified into six flow regimes, according to the dominance of these key features. Existing rheological models for debris flows in various flow regimes were briefly reviewed. The characteristics of flow velocities for a steady, two-dimensional uniform debris flow in each flow regime were obtained by treating the debris flow as a single-layer uniform mixture. The mixed-layer models and the hydraulics of debris flow were also discussed.
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Savage, S. B. (1979) “Gravity flow of cohesionless granular materials in chutes and channels.” J. Fluid Mech., Vol. 92, pp. 53–96.
Shen, S. and others (1989), “The experiment of velocity and concentration distribution of grannules in water-debris flow.” Proc. 4th Int'l Symposium on river sedimentation, Beiging, China, pp. 649–656.
Su, C. G. and others (1993) “Study on the velocity distribution of debris flow.” J. Chinese Soil and Water Conservation, vol. 24 (1), pp. 75–82 (in Chinese).
Takahashi, T. (1981) “Debris flow.” Ann. Rev. Fluid Mechanics, Vol. 13, pp. 57–77.
Yang, M. and L. Wang (1991), “An experimental investigation on the laminated load model of debris flow.” Proc. Int'l Symposium. on Debris Flow and Flood Disaster Protection, Emeishan, Sichuan, China, October 14–18, pp. 56–61. *** DIRECT SUPPORT *** A04BD009 00005
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© 1997 Springer-Verlag
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Jan, CD., Shen, H.W. (1997). Review dynamic modeling of debris flows. In: Armanini, A., Michiue, M. (eds) Recent Developments on Debris Flows. Lecture Notes in Earth Sciences, vol 64. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0117764
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DOI: https://doi.org/10.1007/BFb0117764
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