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Abstrakty
The paper presents a 3D (spatial) analysis of deformation processes in the landslide slope Bystrzyca in Szymbark near Gorlice (Low Beskid – Carpathians; N 49°37′ 09″, E 21°05′ 49″) carried out by the computer code FLAC3D based on the finite difference method. The numerical analysis was performed to determine the influence of the orientation of layers and discontinuities and of hydrogeological conditions on slope deformations and the failure mechanism during sliding processes. The massif is modeled as an elasto-plastic medium obeying the Coulomb-Mohr criterion. Two variants of hydrogeological conditions are analyzed, namely the “dry slope” (without water) and the “wet slope” (entirely saturated). The influence of the orientation of discontinuities (modeled as “ubiquitous”) on the landslide mechanism is investigated as well. Few orientations of discontinuities with respect to the dip direction of the slope surface are considered, namely consequent, insequent, and subsequent (two variants in each case). The results show a clear impact of the pattern of discontinuities and hydrogeological conditions on the deformational behavior of the landslide and the shape of the slip surface. The 3D approach and results of the numerical simulation of the landslide movement prove the necessity of 3D modeling in some cases.
Słowa kluczowe
Rocznik
Tom
Strony
27--45
Opis fizyczny
Bibliogr. 19 poz., rys., tab.
Twórcy
autor
- Institute of Hydro-Engineering, Polish Academy of Sciences, 7 Koscierska, 80-328 Gdansk, Poland
Bibliografia
- Arellano D., Stark T. D. (2000) Importance of three-dimensional slope stability analysis in practice, [In:] Griffiths et al (Eds.), Slope Stability 2000, GSP 101, Reston, ASCE, 18–32.
- Bober L., Thiel K., Zabuski L. (1997) Landslide phenomena in the Polish Carpathian Flysch: Geological and engineering properties of selected landslides,Wydawnictwo IBWPAN, Gdansk, 1997 (in Polish).
- Bober L., Zabuski L. (1993) Flysch Slope Classification from Viewpoint of the Landslide Prediction, Proc. Int. Symp. “Geotechnical Engineering of Hard Soils-Soft Rocks”, Athens 1993, A.A. Balkema, Rotterdam – Brookfield, Vol. 2, 1065–1072.
- Chen R. H., Chameau J. L. (1982) Three-dimensional limit equilibrium analysis of slopes, Geotechnique, 32 (1), 31–40.
- Dauksza L., Kotarba A. (1973) An analysis of the influence of fluvial erosion in the development of landslide slope, Studia Geomorph. Carpatho-Balcanica, No.7, 91–104.
- Detournay Ch., Hart R. (eds.) (1999) FLAC and Numerical Modeling in Geomechanics, Proc. Int. FLAC Symp. on Numerical Modeling in Geomechanics, Minneapolis, Sept. 1999, Balkema/Rotterdam/Brookfield.
- Griffiths D. V., Marquez R. M. (2007) Three-dimensional slope stability analysis by elasto-plastic finite elements, Geotechnique, 57 (6), 537–546.
- Hungr O., Salgado F. M., Byrne P. M. (1989) Evaluation of three-dimensional method of slope stability analysis, Can. Geotech. J.. 26 (4), 679–686.
- Itasca (1997) FLAC3D User’s Manual, Version 2, Minneapolis, USA.
- Lam L., Fredlund D. G. (1993) A general limit equilibrium model for three-dimensional slope stability analysis, Can. Geotech. J., 30 (6), 905–919.
- Silvestri V. (2006) A three-dimensional slope stability problem in clay, Can. Geotech. J., 43 (2), 224–228.
- Stark T. D., Eid H. T. (1998) Performance of three-dimensional slope stability methods, J. Geotech. Geoenviron. Engng, 124 (11), 1049–1060.
- Thiel K. ed. (1989) Formation of flysch Carpathian slopes by mass movements: The case of the Bystrzyca slope in Szymbark, Prace IBW PAN No. 17, Gdansk (in Polish).
- Zabuski L. (2008) Investigation of the mechanism of landslide movement on the test slope including the influence of external factors and internal properties of the rock mass, IBW PAN, Gdansk (internal report), (in Polish).
- Zabuski L. (2013) Assessment of landslide processes based on the results of inclinometric measurements, Przeglad Geologiczny, 61 (4), 248–256 (in Polish).
- Zabuski L., Thiel K., Bober L. (1999) Landslides in the flysch of the Polish Carpathians: Geology, Modelling, Stability Calculations, Wydawnictwo IBW PAN, Gdansk, 171 p. (in Polish).
- Zabuski L. (2006) Numerical three-dimensional modelling of the landslide process in the Carpathian Flysch, Proc. Int. Conf. “Mass Movement Hazard in Various Environments”, Polish Geological Institute Special Papers 20, 20–21.10.2005, Kraków, 114–118.
- Zabuski L., Wójcik A., Gil E., Mrozek T., Raczkowski W. (2009) Landslide process in a flysch massif – case study of the Kawiory landslide, Beskid Niski Mts. (Carpathians, Poland), Geological Quarterly, 53 (3), PGI, Warsaw, 317–332.
- Zabuski L. (2018) The influence of slope geometry on its stability: Spatial and plane analysis, Archives of Hydro-Engineering and Environmental Mechanics (AHEM), 65 (4), 243–254.
Uwagi
Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-a8e6a68c-56a6-4df0-bd4d-63c4f7f1c96e