Abstract
Mass movements under the influence of gravity occur as result of diverse disturbing and destabilizing processes, for example of climatic or anthropological origin. The stability of slopes is mainly determined by the geometry of the land-surface and designated slip-horizon. Further contributions are supplied by the pore water pressure, cohesion and friction. All relevant factors have to be integrated in a slope stability model, either by measurements and estimations (like phenomenological laws) or derived from physical equations. As result of stability calculations, it's suitable to introduce an expectation value, the ‘factor-of-safety’, for the slip-risk. Here, we present a model based on coupled physical equations to simulate hardly measurable phenomenons, like lateral forces and fluid flow. For the displacements of the soil-matrix we use a modified poroelasticity-equation with a Biot-coupling (Biot 1941) for the water pressure. Latter is described by a generalized Boussinesq equation for saturated-unsaturated porous media (Blendinger 1998). One aim of the calculations is to improve the knowledge about stability-distributions and their temporal variations. This requires the introduction of a local factor-of-safety which is the main difference to common stability models with global stability estimations. The reduction of immediate danger is still the emergent task of the most slope and landslide investigations, but this model is also useful with respect to understand the governing processes of landform evolution.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Biot, M.A. (1941): General theory of three dimensional consolidation. J. Appl. Phys. 12: 155–164.
Bishop, A.W. (1955): The use of the slip circle in the stability analysis of earth slopes. Géotechnique, 5: 7–17.
Blendinger, C. (1996): An approximation of saturated-unsaturated Darcy flow in thin domains (in German). University of Bonn, SFB 256, Preprint No. 485.
Blendinger, C. (1998): A Dupuit Approximation for Saturated-Unsaturated Lateral Soil Water Flow. In this volume.
Bromhead, E.N. (1992): The stability of slopes. Chapman & Hall, Blackie Academic & Professional Press, Glasgow, 109–142.
Brooks, S.M., M.G. Anderson, T. Ennion, and P. Wilkinson (1998): Exploring the potential for physically-based models and contemporary slope processes to examine the causes of Holocene mass movement. In this volume.
van Genuchten, M.Th. (1980): Predicting the hydraulic conductivity of unsaturated soils. Proc. Soil Science Soc. of America, Vol. 44, No.5: 892–898.
Guéguen, Y., and V. Palciauskas (1994): Introduction to the physics of rocks. Princeton University Press, Princeton, New Jersey, 135–158.
Hattendorf, I., and H.-J. Kümpel (1996): Investigation of landslides with the electromagnetic induction method (in German). Thesis, Institute of Geology, University of Bonn.
Janbu, N. (1973): Slope stability computations. In: Hirschfeld, E., and S. Poulos (eds.): Embankment Dam Engineering, Casagrande Memorial Volume. John Wiley, New York.
Morgenstern, N.R., and V.E. Price (1965): The analysis of general slip surfaces. Géotechnique, 15: 79–93.
Morgenstern, N.R., and V.E. Price (1967): A numerical method for solving the equations of stability of general slip surfaces. Computer Journal, 9: 388–393.
Ranalli, G. (1987): Rheology of the earth. Deformation and flow processes in geophysics and geodynamics. Allen & Unwin Inc., Boston, 50–113.
Sarma, S.K. (1973): Stability analysis of embankments and slopes. Géotechnique, 23: 423–433.
Schrefler, B.A., and Z. Xiaoyong (1993): A Fully Coupled Model for Water Flow and Airflow in Deformable Porous Media. Water Resources Research, 29: 155–167.
Author information
Authors and Affiliations
Editor information
Rights and permissions
Copyright information
© 1999 Springer-Verlag
About this chapter
Cite this chapter
Hattendorf, I., Hergarten, S., Neugebauer, H.J. (1999). Local slope stability analysis. In: Hergarten, S., Neugebauer, H.J. (eds) Process Modelling and Landform Evolution. Lecture Notes in Earth Sciences, vol 78. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0009725
Download citation
DOI: https://doi.org/10.1007/BFb0009725
Published:
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-64932-8
Online ISBN: 978-3-540-68307-0
eBook Packages: Springer Book Archive