Abstract
The dynamic process and sensitivity in the debris transportation process are important topics in the study of rapid landslides and debris flows. The motion process of debris flow is recognised as a dynamic interaction between the original moving material and the entrained basal topsoil shearing along their non-slip contact surface. In this paper, we employed numerical modelling to clarify the erosional effects, and use statistical method to compare the influence degree of rheological parameters on the runout behavior. The simulated results show that unconfined flows typically exhibit a wide range of entrainment and deposition volume, whereas confined flows yield moderate volumes of entrainment and small volumes of deposition. The basal topography is an important factor in influencing the debris transportation and deposition processes. The velocity, runout distance, and deposition area and volume are more sensitive to underlying surface conditions, particles of debris, pore water pressure; and can affect the debris intensity, disaster area and scale to a large extent. Conversely, the velocity, runout distance, and deposition area and volume, are less sensitive to the source volume of debris flows, and can only affect the velocity to a little extent. The proposed suggestions can be utilized conveniently in general geotechnical engineering practices.
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References
Cannon SH, Savage WZ (1988) A mass change model for the estimation of debris flow runout. J Geol 96:221–227
Chen H, Lee CF (2000) Numerical simulation of debris flows. Can Geotech J 37:146–160
Chen H, Lee CF (2002) Runout analysis of slurry flows with Bingham model. ASCE J Geotech Geoenviron Eng 128:1032–1042
Chen H, Lee CF (2003) A dynamic model for rainfall-induced landslides on natural slopes. Geomorphology 51:269–288
Chen H, Crosta GB, Lee CF (2006) Erosional effects on runout of fast landslides, debris flows and avalanches: a numerical investigation. Geotechnique 56(5):305–322
Crosta GB, Chen H, Lee CF (2004) Replay of the 1987 Val Pola Landslide, Italian Alps. Geomorphology 60(1–2):127–146
Erlichson H (1991) A mass-change model for the estimation of debris-flow runout, a second discussion: conditions for the application of the rocket equation. J Geol 99:633–634
Hungr O (1990a) A mass-change model for the estimation of debris-flow runout: a discussion. J Geol 98:791
Hungr O (1990b) Momentum transfer and friction in the debris of rock avalanche: discussion. Can Geotech J 27:697
Jakob M (2005) Debris-flow hazard analysis. In: Jakob M, Hungr O (eds) Debris-flow hazards and related phenomena. Praxis-Springer, Berlin, pp 411–443
Schuster RL, Salcedo DA, Valenzuela L (2002) Overview of catastrophic landslides of South America in the twentieth century. In: Evans SG, DeGraff JV (eds) Catastrophic landslides: effects, occurrence, and mechanisms. Geological Society of America, Boulder, pp 1–34
Takahashi T (1981) Estimation of potential debris flows and their hazardous zones. J Nat Disas Sci 3(1):57–89
Van Gassen W, Cruden DM (1989) Momentum transfer and friction in the debris of rock avalanche. Can Geotech J 26:623–628
Varnes DJ (1978) Slope movement types and processes. In: Schuster RL, Krizek RJ (eds) Landslides analysis and control, vol 176, Transportation Research Board Special Report. National Research Council, Washington, pp 11–33
Acknowledgements
This research was funded and supported by the National Natural Science Foundation of China (No: 41330858, 41302224, 41071182), the National Basic Research Program of China (2011CB403302), China Postdoctoral Science Foundation (No: 2012 T50797, 2011M501445) and Natural Science Foundation of Shannxi Province, China (No: 2012JQ5001). We are grateful to the anonymous reviewers for their valuable suggestions in improving the manuscript.
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Yu, G., Zhang, M., Chen, H. (2014). The Dynamic Process and Sensitivity Analysis for Debris Flow. In: Sassa, K., Canuti, P., Yin, Y. (eds) Landslide Science for a Safer Geoenvironment. Springer, Cham. https://doi.org/10.1007/978-3-319-05050-8_26
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DOI: https://doi.org/10.1007/978-3-319-05050-8_26
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