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Degradation Processes in Civil Engineering Slopes in Soft Rocks

  • Predrag MiščevićEmail author
  • Nataša Štambuk Cvitanović
  • Goran Vlastelica
Chapter

Abstract

Surface degradation processes and landslides are quite frequent on slopes excavated or naturally formed in soft rock formations. Such slopes are susceptible to rapid weathering because, within several months to several years, that is, within the engineering period of time, the rock deterioration process starts both on the slope surface and within the inside of the rock mass. The weathering of soft rocks has been studied with the intention to clarify the process. However, the relationship between the weathering and the landslides or rockfalls is still not well understood. When dealing with soft rock weathering, it is very important to recognize that weathering of soft rock occurs in the engineering time scale, when freshly excavated rock is exposed to weathering factors. The stability of slopes cut in soft rocks should not be considered only from the standpoint of material strength immediately after the excavation, or only from the aspect of position of bedding joints and other joints with respect to the cut slope position. For that purpose, change in the shear strength due to the degradation has been discussed in the chapter. This analysis includes the factor of time in which the strength of this material will be reduced through weathering, but the factor of weathering depth should also be taken into account. This in fact defines the issue of durability of slopes cut in soft rocks. Since the processes of weathering and erosion occur simultaneously, their combination will cause further decomposition of any soft rock mass on the face of the cut, with additional relieving effect of rock mass through the redistribution stresses. The relative ratio of erosion and weathering has a significant impact on the development of the slope surface of cuts. With that aim, slope degradation models are discussed in the chapter, in addition to methods of soft rock slopes monitoring.

Keywords

Marl Weathering Slope stability Slope durability Degradation model 

References

  1. Alonso EE, Pineda JA, Cardoso R (2010) Degradation of marls; two case studies from the Iberian Peninsula. In: Calcaterra D, Parise M (eds) Weathering as a predisposing factor to slope movements, Engineering geology Special publications, vol 23. Geological Society, London, pp 47–75Google Scholar
  2. Bakker JP, Le Heux JWN (1946) Projective-geometric treatment of O. Lehmann’s theory of the transformation of steep mountain slopes. Proc Koninklijke Nederlandse Akademie van Wetenschappen (KNAW) 49(5):533–547Google Scholar
  3. Bryson LS, Gomez-Gutierrez IC, Hopkins TC (2012) Development of a new loss slake durability index for compacted shales. Eng Geol 139–140:66–75CrossRefGoogle Scholar
  4. Buocz I, Rozgonyi-Boissinot N, Görög P, Török Á (2010) Laboratory determination of direct shear strength of granitoid rocks; examples from the host rock of the nuclear waste storage facility of Bátaapáti (Hungary). Cent Eur Geol 53(4):405–417CrossRefGoogle Scholar
  5. Calcaterra D, Mario Parise M (2010) Weathering as a predisposing factor to slope movements: an introduction, Engineering geology Special publications, vol 23. Geological Society, London, pp 1–4Google Scholar
  6. Ciantia MO, Castellanza R (2016) Modelling weathering effects on the mechanical behaviour of rocks. Eur J Environ Civil Eng 20(9):1054–1082CrossRefGoogle Scholar
  7. Ciantia MO, Castellanza R, Crosta GB, Hueckel T (2015) Effects of mineral suspension and dissolution on strength and compressibility of soft carbonate rocks. Eng Geol 184:1–18CrossRefGoogle Scholar
  8. Erguler ZA, Ulusay R (2009) Water-induced variations in mechanical properties of clay-bearing rocks. Int J Rock Mech Min Sci 46:355–370CrossRefGoogle Scholar
  9. Ferrigno F, Gigli G, Fanti R, Intrieri E, Casagli N (2017) GB-InSAR monitoring and observational method for landslide emergency management: the Montaguto earthflow (AV, Italy). Nat Hazards Earth Syst Sci 17:845–860.  https://doi.org/10.5194/nhess-17-845-2017CrossRefGoogle Scholar
  10. Fisher O (1866) On the disintegration of a chalk cliff. Geol Mag 3:354–356CrossRefGoogle Scholar
  11. Fookes PD, Gourley CS, Ohikere C (1988) Rock weathering in engineering time. Q J Eng Geol 21:33–57CrossRefGoogle Scholar
  12. Gautam TP, Shakoor A (2013) Slaking behavior of clay-bearing rocks during a one-year exposure to natural climatic conditions. Eng Geol 166:17–25CrossRefGoogle Scholar
  13. Gökçeoğlu C, Ulusay R, Sönmez H (2000) Factors affecting the durability of selected weak and clay-bearing rocks from Turkey, with particular emphasis on the influence of the number of drying and wetting cycles. Eng Geol 57:215–237CrossRefGoogle Scholar
  14. Görög P, Török Á (2007) Slope stability assessment of weathered clay by using field data and computer modelling: a case study from Budapest. Nat Hazards Earth Syst Sci 7:417–422.  https://doi.org/10.5194/nhess-7-417-2007CrossRefGoogle Scholar
  15. Hawkins AB (2015) Splitting of mudrocks/shales by gypsum growth. In: ISRM Congress 2015 Proceedings - Int’l symposium on rock mechanicsGoogle Scholar
  16. He M (2014) Latest progress of soft rock mechanics and engineering in China. J Rock Mech Geotech Eng 6(3):165–179CrossRefGoogle Scholar
  17. Huisman M (2006) Assessment of rock mass decay in artificial slopes. Ph.D. thesis, Delft University of Technology and University of AmsterdamGoogle Scholar
  18. Huisman M, Hack HRGK, Nieuwenhuis JD (2006) Predicting rock mass decay in engineering lifetimes: the influence of slope aspect and climate. Environ Eng Geosci 12(1):39–51CrossRefGoogle Scholar
  19. Huisman M, Nieuwenhuis JD, Hack HRGK (2011) Numerical modelling of combined erosion and weathering of slopes in weak rock. Earth Surf Process Landf 36:1705–1714CrossRefGoogle Scholar
  20. Hutchinson JN (1998) A small-scale field check on the Fisher-Lehmann and Bakker-Le Heux cliff degradation models. Earth Surf Process Landf 23:913–926CrossRefGoogle Scholar
  21. ISRM (1978) Suggested methods for the quantitative description of discontinuities in rock mass. Int J Rock Mech Min Sci Geol Abstr 15(6):319–368CrossRefGoogle Scholar
  22. Kollios A (1993) Geosynthetic design for erosion control of hard marls. In: Anagnostopoulos A et al (eds) Proceedings of an international symposium Geotechnical engineering of hard soils – soft rocks, vol 2. Balkema, Rotterdam, pp 1285–1288Google Scholar
  23. Kordić B (2014) Development of three-dimensional terrestrial laser scanning method for determining and analyzing of landslide surface movements. PhD thesis, Faculty of Geodesy, University of Zagreb, ZagrebGoogle Scholar
  24. Kossev N (1990) Destruction of rock slopes as a result of deterioration. In: Sixth Int. congress of engineering geology, Amsterdam, NetherlandsGoogle Scholar
  25. Lana MS (2016) Some reflections about engineering behavior of schists and phyllites in Brazil. In: II Specialized Conference on soft rocks, Cartagena, ColombiaGoogle Scholar
  26. Lehmann O (1933) Morphologische Theorie der Verwitterung von Steinschlagwänden. Vierteljahrsschr Naturforsch Gesellschaft Zurich 78:83–126Google Scholar
  27. Martinez-Bofill J, Corominas J, Soler A (2004) Behaviour of the weak rock cut slopes and their characerization using the results of the slake durability test. In: Proc Engineering geology for infrastructure planning in Europe – a European perspective. Springer, New York, pp 405–413CrossRefGoogle Scholar
  28. Miščević P (1998a) Effect of drying and wetting on mechanical characteristics of Eocene flysch marl. In: Marić B, Lisac Z, Szavits-Nossan A (eds) Proc. XIth Danube Europian conf. on soil mech. and geotech. eng., Poreč, Croatia, pp 737–741Google Scholar
  29. Miščević P (1998b) The investigation of weathering process in Eocene flysch. In: Evangelista A, Picarelli L (eds) Proc. Second Int. Sym. on hard soils-soft rocks, Naples, Italy, pp 267–272Google Scholar
  30. Miščević P, Vlastelica G (2009) Shear strength of weathered soft rock – proposal of test method additions. In: Proc. Reg. Sym. on Rock Eng. in Diff. Gr. Cond. – Eurock 2009, Cavtat, Croatia. CRC Press/Balkema, Leiden, pp 303–308Google Scholar
  31. Miščević P, Vlastelica G (2010) Shear strength of artificially weathered marl. In: Proc. Reg. Sym. on Rock Mechanics in Civil and Environmental Engineering – Eurock 2010, Lausanne, Switzerland. CRC Press/Balkema, Leiden, pp 119–122Google Scholar
  32. Miščević P, Vlastelica G (2011) Durability characterization of marls from the region of Dalmatia, Croatia. Geotech Geol Eng 29(5):771–781CrossRefGoogle Scholar
  33. Miščević P, Vlastelica G (2012) Time-dependant stability of slopes excavated in marl. Gradevinar 64(6):451–461Google Scholar
  34. Miščević P, Vlastelica G (2014) Impact of weathering on slope stability in soft rock mass. J Rock Mech Geotech Eng 6(3):240–250CrossRefGoogle Scholar
  35. Oldecop L, Alonso E (2012) Modelling the degradation and swelling of clayey rocks bearing calcium-sulphate. Int J Rock Mech Min Sci 54:90–102CrossRefGoogle Scholar
  36. Petrie G, Toth CK (2008) Introduction to laser ranging, profiling and scanning. In: Shan J, Toth CK (eds) Topographic laser ranging and scanning: principles and processing. CRC Press/Taylor & Francis, London, pp 1–28Google Scholar
  37. Pineda JA, Alonso EE, Romero E (2014) Environmental degradation of claystones. Geotechnique 64(1):64–82CrossRefGoogle Scholar
  38. Roje-Bonacci T (1996) The landslides on old high cut-offs in the Mediterranean karst. In: Senneset K (ed) Landslides. Balkema, Rotterdam, pp 1163–1168Google Scholar
  39. Roje-Bonacci T (1998) Parameter changes after weathering of soft rock. In: Proc. Sym. on hard soils-soft rocks, Naples, Italy, 12–14 oct 1998, pp 799–804Google Scholar
  40. Roje-Bonacci T, Miščević P, Števanić D (2009) Rock-slides on road cuttings in the Dinaric karst of Croatia: processes and factors. Environ Geol 58:359–369CrossRefGoogle Scholar
  41. Sadisun IA, Shimada H, Ichinose M, Matsui K (2005) Study on the physical disintegration characteristics of Subang claystone subjected to a modified slaking index test. Geotech Geol Eng 23:199–218CrossRefGoogle Scholar
  42. Šestanović S, Štambuk N, Samardžija I (1994) Control of the Stability and Protection of Cut Slopes in Flysch. Geolog Croat 47/1:139–148Google Scholar
  43. Teza G, Galgaro A, Zaltron N, Genevois R (2007) Terrestrial laser scanner to detect landslide displacement fields: a new approach. Int J Remote Sens 28:3425–3446CrossRefGoogle Scholar
  44. Török Á, Barsi Á, Bögöly G, Lovas T, Somogyi A, Görög P (2018) Slope stability and rockfall assessment of volcanic tuffs using RPAS with 2-D FEM slope modelling. Nat Hazards Earth Syst Sci 18(2).  https://doi.org/10.5194/nhess-18-583-2018CrossRefGoogle Scholar
  45. Ulusay R, Hudson JA (2007) The complete ISRM suggested methods for rock characterization testing and monitoring: 1974–2006. Comission on Testing Methods, ISRM, LisbonGoogle Scholar
  46. Vivoda Prodan M, Mileusnić M, Mihalić Arbanas S, Arbanas Ž (2016) Influence of weathering processes on the shear strength of siltstones from a flysch rock mass along the northern Adriatic coast of Croatia. Bull Eng Geol Environ 76:695–711.  https://doi.org/10.1007/s10064-016-0881-7CrossRefGoogle Scholar
  47. Vlastelica G (2015) The influence of weathering on durability of cuts in soft rock mass. PhD thesis, Faculty of Civil Engineering, Architecture and Geodesy, University of Split, SplitGoogle Scholar
  48. Vlastelica G, Miščević P, Fukuoka H (2014) Rockfall monitoring by terrestrial laser scanning - case study of the Rock Cliff at Duće, Croatia. In: Mihalić S, Arbanas Ž (eds) Landslide and flood hazard assessment, Proc. of the first regional symposium on landslides in the Adriatic-Balkan region. Faculty of Mining, Geology and Petroleum Engineering, University of Zagreb and FCE, University of Rijeka, Zagreb, pp 51–55Google Scholar
  49. Vlastelica G, Miščević P, Pavić N (2016a) Testing the shear strength of soft rock at different stages of laboratory simulated weathering. Gradevinar 68(12):955–966Google Scholar
  50. Vlastelica G, Miščević P, Fukuoka H (2016b) Monitoring of vertical cuts in soft rock mass, defining erosion rates and modelling time-dependent geometrical development of the slope. In: Ulusay R et al (eds) Rock mechanics and rock engineering: from the past to the future. Taylor & Francis Group, London, pp 1249–1254CrossRefGoogle Scholar
  51. Vlastelica G, Pikelj K, Kordić B (2017) Erosional processes acting on coastal cliffs in the Split urban zone, Croatia. In: Proc. of the fourth Coastal and Maritime Mediterranean Conference, Split, Croatia, pp 79–84.  https://doi.org/10.5150/cmcm.2017.015
  52. Vlastelica G, Miščević P, Štambuk Cvitanović N (2018a) Durability of soft rocks in Eocene flysch formation (Dalmatia, Croatia). Eng Geol 245:207–217CrossRefGoogle Scholar
  53. Vlastelica G, Miščević P, Štambuk Cvitanović N, Glibota A (2018b) Geomechanical aspects of remediation of quarries in the flysch: case study of abandoned quarry in Majdan. In: Litvinenko V (ed) Proceedings: Geomechanics and geodynamics of rock masses. Taylor & Francis Group, London, pp 1585–1590Google Scholar
  54. Wittke W (1990) Rock mechanics. Theory and applications with case histories. Springer, BerlinCrossRefGoogle Scholar
  55. Yavuz H, Altindag R, Sarac S, Ugur I, Sengun N (2006) Estimating the index properties of deteriorated carbonate rocks due to freeze–thaw and thermal shock weathering. Int J Rock Mech Min Sci 43:767–775CrossRefGoogle Scholar
  56. Yin Y, Zhang BY, Zhang JH, Suna GL (2016) Effect of densification on shear strength behavior of argillaceous siltstone subjected to variations in weathering-related physical and mechanical conditions. Eng Geol 208:63–68CrossRefGoogle Scholar
  57. Zhang BY, Zhang JH, Sun GL (2012) Particle breakage of argillaceous siltstone subjected to stresses and weathering. Eng Geol 137–138:21–28CrossRefGoogle Scholar

Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  • Predrag Miščević
    • 1
    Email author
  • Nataša Štambuk Cvitanović
    • 1
  • Goran Vlastelica
    • 1
  1. 1.Faculty of Civil Engineering, Architecture and GeodesyUniversity of SplitSplitCroatia

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