Commenced in January 2007
Paper Count: 30174
A Tool for Modeling Slope Instability Triggered by Piping
Abstract:The paper deals with the analysis of triggering conditions and evolution processes of piping phenomena, in relation to both mechanical and hydraulic aspects. In particular, the aim of the study is to predict slope instabilities triggered by piping, analysing the conditions necessary for a flow failure to occur. Really, the mechanical effect involved in the loads redistribution around the pipe is coupled to the drainage process arising from higher permeability of the pipe. If after the pipe formation, the drainage goes prevented for pipe clogging, the porewater pressure increase can lead to the failure or even the liquefaction, with a subsequent flow slide. To simulate the piping evolution and to verify relevant stability conditions, a iterative coupled modelling approach has been pointed out. As example, the proposed tool has been applied to the Stava Valley disaster (July, 1985), demonstrating that piping might be one of triggering phenomena of the tailings dams collapse.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1331349Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 2043
 D.J. Hagerty," Piping - sapping erosion I: basic considerations", J of Hydr Eng 117(1991), pp. 991-1008.
 M.C. Della Rossa, V. Francani V., and P. Gattinoni, "Studio idrogeologico del territorio monzese: individuazione e caratterizzazione delle zone a bassa resistenza", Quaderni di Geologia Applicata 10- 2(2003), pp.103-120.
 C.G. Higgins, "Piping and sapping: development of landforms by groundwater outflow", in: Groundwater as a Geomorphic Agent (ed. by R.G.LaFleur), pp. 18-58, Allen & Unwin, Troy, NY, 1984.
 R.B. Bryan, and J.A.A. Jones, "The significance of soil piping processes: inventory and prospect", Geomorphology 20 (1997), pp. 209- 218.
 P. Durgin, "Subsurface drainage erodes forested granitic terrain", Physical Geography 4(1984), 1, pp. 24-39, V.H. Wiston & Sons Inc.
 A.J. Gerrard, Soils and landforms. An integration of geomorphology and pedology, George Allen and Unwin, London(1981), 210 pp.
 T.C. Kenney, and D. Lau, "Internal stability of granular filters", Canadian Geotechnical Journal, vol 22, no. 2(1985), pp. 215-225.
 J.M. Garcia-Ruiz, T. Lasanta, and F. Alberto, "Soil erosion by piping in irrigated fields", Geomorphology 20(1997), pp. 269-278.
 C.G. Higgins, and C. Schoner , "Sinkholes formed by piping into buried channels", Geomorphology 20(1997), pp. 307-312.
 M. Gutierrez, C. Sancho, G. Benito, J. Sirvent, and G. Desir, "Quantitative study of piping processes in badland areas of the Ebro Basin, NE Spain", Geomorphology 20 (1997), pp. 237-253.
 D. Zaslavsky, and G. Kassiff, "Theoretical formulation of piping mechanism in cohesive soils", Géotechnique, XV (1965), pp. 305-314.
 K.S. Richards, and K.R. Reddy, "Critical appraisal of piping phenomena in earth dams", Bull Eng Geol Environ 66(2007), pp. 381-402.
 R. Fell, C.F. Wan, J. Cyganiewics, and M. Foster, "Time for development of internal erosion and piping in embankment dams", J Geotech Geoenviron Eng 129(4), 2003, pp. 307-314.
 K. Kosugi, T. Uchida, and T. Mizuyama, "Numerical calculation of soil pipe flow and its effect on water dynamics in a slope", Hydrological Processes 18(2004), pp. 777-789.
 K. Watanabe, and H. Imai, "Transient behaviour of groundwater flow in idealized slope having a soil pipe in it - numerical analysis of the saturated-unsaturated groundwater flow by the use of finite element method of three dimensional form", Journal of the Japan Society of Engineering Geology 25(1984), pp. 1-8.
 S. Tomlinson, and Y. Vaid, "Seepage forces and confining pressure effects on piping erosion", Can Geotech J 37(1), 2000, pp.1-13.
 J.A. Yamamuro, P.V. Lade, "Static liquefaction of very loose sands", Can Geotech J 34(1997), pp. 905-917.
 R.C. Sidle, H. Kitahara, T. Terajima, and Y. Nakai, "Experimental studies on the effects of pipeflow on throughflow partitioning", Journal of Hydrology 165 (1995), pp. 207-219.
 Y. Tsukamoto, T. Ohta, and H. Nogushu, "Hydrological and geomorphological studies of debris slides on forested hillslopes in Japan". Int. Assoc. Hydrol. Sci. Publ. 137, 1982, pp. 89-98.
 T.C. Pierson, "Soil pipes and slope stability", Q. J. Eng. Geol. 16(1983), pp. 1-11.
 J. Farifteh, and R. Soeters, "Factors underlying piping in the Basilicata region, Southern Italy", Geomorphology 26 (1999), pp. 239-251.
 P.H. Temple, and A. Rapp, "Landslides in the Mgeta area, Western Uluguru Mountains, Tanzania", Geogr. Ann. A 54 (3-4), 1972, pp. 157- 193.
 A. Jenkins, P.J. Ashwoth, R.I. Ferguson, I.C. Grieve, P. Rowling, and T.A. Stott, "Slope failure in the Ochil Hills, Scotland, November, 1988", Earth Surf. Process. Landforms 13, pp. 69-76.
 A.P. Dykes, and K.J. Kirk, "Initiation of a multiple peat slide on Cuilcagh Mountain, Northern Ireland", Earth Surface Processes and Landforms 26(2001): 395-408.
 C.R. Ullrich, D.J. Hagerty, and R.W. Holmberg, "Surficial failures of alluvial streambanks", Can Geotech J 23(1986), pp. 204-316.
 J.L. Sherard, and R.S. Decker (Eds), Dispersive clays, related piping, and erosion in geotechnical projects, Am. Soc. Test. Mater. Spec. Tech. Publ. 623, 1977.
 G.E. Blight, and A.B. Fourie, "Catastrophe revisited - disastrous flow failures of mine and municipal solid waste", Geotechnical and Geological Engineering 23(2005), pp. 219-248.
 M. Govi, and F. Luino, "La colata di fango di Stava (Trentino) del 19 luglio 1985", in Rassegna dei contributi scientifici sul disastro della Val di Stava (Provincia di Trento), 19 luglio 1985, pp. 359-397, 2003.
 ITASCA, User-s guide, Itasca Consulting Group. Minneapolis (USA), 1999.
 P. Colombo, and F. Colleselli, "The collapse of the Stava tailings basin - Analysis of the event and observations", in Rassegna dei contributi scientifici sul disastro della Val di Stava (Provincia di Trento), 19 luglio 1985, pp. 335-358, 2003.
 O. Sammarco, "A Tragic Disaster Caused by the Failure of Tailings Dams Leads to the Formation of the Stava 1985 Foundation", Mine Water and the Environment 23(2004), pp. 91-95.
 R.J. Chandler, M. Pellegrini, and G. Tosatti, "Le cause del disastro", in Lucchi ed. Stava perché, Curcu & Genovese, Trento, 1995, pp. 221-230.
 G. Ricceri, Il crollo dei bacini di Stava. Crolli e affidabilit├á delle strutture civili (2001).
 R.J. Chandler, and G. Tosatti, "The Stava tailings dams failure, Italy, July 1985", Proc. Instn Civ. Engrs Geotech. Engng 113 (1995), pp. 67- 79.
 G. Berti, F. Villa, D. Dovera, R. Genevois, and J. Brauns, "The disasetr of Stava, Northern Italy, Hydraulic Fill Structures", Proc. Am. Soc. Engrs Geotech. Engng Div., Speciality Conf., 1988, pp. 492-510.
 R. Genevois, and P.R. Tecca, "The tailings dams of Stava (Northern Italy): an analysis of the disaster", Proc. 1st Internat. Conf. On Environmental Management Geo-Water and Engineering Aspects, 1993, pp. 23-36.