A Study on Debris Flow Surges

by Zhaoyin Wang, Inst of Water Conservancy and, Hydroelectric Power Research, China,

Document Type: Proceeding Paper

Part of: Hydraulic Engineering


The mechanism of development of debris flow surges i studied theoretically and experimentally. It is proved that the development of viscous debris flow from continuous flow into a series of roll waves is attributed to the yield stress of the matrix. Slight fluctuation in depth grew up and developed into surges in flow of clay suspensions when the suspensions transformed from Newtonian into non-Newtonian fluid and exhibited yield stress. The greater the yield stress and the smaller the flow depth, the more liable the flow develops into surge waves.

Subject Headings: Debris | Solids flow | Fluid flow | Tides | Suspended sediment | Matrix (mathematics) | Soil stress | Sediment transport

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