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A Numerical Investigation of Sinkhole Subsidence Development over Shallow Excavations in Tectonised Weak Rocks: The Dolaei Tunnel’s Excavation Case

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Abstract

Roof collapses during the constructions of underground excavations in weak rocks is a serious problem. In particular, excavations in shallow depths and in incompetent rocks may initiate the caving of the overburden materials and sinkhole formation. Sinkholes have significant environmental impacts and more importantly, they threaten the stability of surface and subsurface infrastructures above the excavations. This study investigates the formation of sinkhole subsidences in shallow excavations in poor and problematic rocks. The progressive collapse and sinkhole subsidence in the Dolaei road tunnel is considered as a case history. Understanding the geological and geotechnical characteristics of rocks is the fundamental step for analysing the mechanisms of instability. Rock mass characteristics are reviewed, and the most effective factors impacting on the tunnel’s stability are identified and discussed. The role of the method of excavation and support in controlling ground movements are assessed through numerical modellings. The effect of pre-support as a practical technique for controlling ground movements and preventing sinkhole formation in weak rocks is also discussed. Outcomes of this study indicate that the rock mass surrounding the Dolaei tunnel consists of highly tectonised and foliated metamorphic rocks. Schistosity and foliation considerably impact on the strength and deformability of the rock mass. This study shows that the geological characteristics of the rocks in the Dolaei tunnel had substantial effect on the collapse and sinkhole formation. The numerical findings also reveal that employing pre-supporting techniques, particularly forepoling, using a staged excavation and applying composite support systems (consisting of rock bolts and reinforced shotcrete) are practical remedies to prevent the progressive collapse, and to avoid the formation of sinkholes during excavation in weak rocks in shallow depths.

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Fig. 1
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Adopted from Ghasemi et al. (2007)

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Adopted from Ghasemi et al. (2007)

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Modified from IRIMPO (2016)

Fig. 5

Adopted from T.S. Courtesy of Aria (2016)

Fig. 6

Courtesy of Ebadi (2011) and Ghasemi et al. (2007)

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Courtesy of Ghasemi et al. (2007) and Sharifi et al. (2011)

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Courtesy of Marinos and Hoek (2000)

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References

  • Aydan Ö, Ulusay R, Tokashiki N (2014) A new rock mass quality rating system: rock mass quality rating (RMQR) and its application to the estimation of geomechanical characteristics of rock masses. Rock Mech Rock Eng 47(4):1255–1276

    Article  Google Scholar 

  • Banton C, Diederichs M, Hutchinson D, Espley S (2004) Mechanisms of shotcrete roof support. Shotcrete: more engineering developments. Taylor and Francis Group, London, pp 39–45

    Book  Google Scholar 

  • Barton N (2002) Some new Q-value correlations to assist in site characterisation and tunnel design. Int J Rock Mech Min Sci 39:185–216

    Article  Google Scholar 

  • Barton N, Grimstad E (1995) Design of tunnel support. In: Austin SA, Robins PJ (eds) Sprayed concrete: properties, design and application. Whittles Publishing, Latheronwheel, pp 150–170

    Google Scholar 

  • Barton N, Lien R, Lunde J (1974) Engineering classification of rock masses for the design of tunnel support. Rock Mech 6:189–236

    Article  Google Scholar 

  • Baumann T, Betzle M (1984) Investigation of the performance of lattice girders in tunnelling. Rock Mech Rock Eng 17:67–81. doi:10.1007/bf01042710

    Article  Google Scholar 

  • Behzadtabar P, Ghobadi MH, Izadi-kian L (2012) A preliminary study on the seismicity of the area in the south-east of Hamadan—a case study of Zamanabad, Mangavi and Kamari villages. Paper presented at the the 16th annual meeting of the geological society of Iran, Shiraz University, Shiraz, Iran (in Persian)

  • Bell FG, De Bruyn I (1999) Subsidence problems due to abandoned pillar workings in coal seams. Bull Eng Geol Environ 57:225–237

    Article  Google Scholar 

  • Bell FG, Cripps JC, Culshaw MG, Lovell MA (1988) A review of ground movements due to civil and mining engineering operations. Geol Soc Lond Eng Geol Spec Publ 5:3–31

    Google Scholar 

  • Bhasin R, Grimstad E (1996) The use of stress–strength relationships in the assessment of tunnel stability. Tunn Undergr Space Technol 11:93–98

    Article  Google Scholar 

  • Bhasin R, Magnussen AW, Grimstad E (2006) The effect of tunnel size on stability problems in rock masses. Tunn Undergr Space Technol 21:405–406

    Article  Google Scholar 

  • Bieniawski Z (1974) Engineering classification of jointed rock masses. Discussions of paper by ZT Bieniawski, Trans. S. Afr. Instn. Civ. Engrs, v15, n12, Dec. 1973. Int J Rock Mech Min Sci Geomech Abstr. Pergamon, p 244

  • Bieniawski ZT (1989) Engineering rock mass classifications. Wiley, New York

    Google Scholar 

  • Brown ET, Hoek E (1978) Trends in relationships between measured in situ stresses and depth. Int J Rock Mech Min Sci Geomech Abstr 4:211–215

    Article  Google Scholar 

  • Chryssanthakis P, Barton N, Lorig L, Christianson M (1997) Numerical simulation of fiber reinforced shotcrete in a tunnel using the discrete element method. Int J Rock Mech Min Sci 34:54.e14–54.e51

    Google Scholar 

  • Cole KW, Figg J (1987) Improved rock paste: a slow hardening bulk fill based on colliery spoil, pulverised fuel ash and lime. In: Paper presented at the proceedings of the second international conference on the reclamation, treatment and utilization of coal mining wastes, Nottingham, England

  • Dalgıç S (2003) Tunneling in fault zones, Tuzla tunnel, Turkey. Tunn Undergr Space Technol 18:453–465

    Article  Google Scholar 

  • Deere DU, Hendron A, Patton F, Cording E (1966) Design of surface and near-surface construction in rock. In: The 8th US symposium on rock mechanics (USRMS), 1966. American Rock Mechanics Association

  • Fereidooni D, Khanlari GR, Heidari M, Sepahigero AA, Kolahi-Azar A (2015) Assessment of inherent anisotropy and confining pressure influences on mechanical behavior of anisotropic foliated rocks under triaxial compression. Rock Mech Rock Eng. doi:10.1007/s00603-015-0814-y

    Google Scholar 

  • Flåten M (2015) Stress induced stability assessment of the underground caverns for Moglicë hydropower project. Norwegian University of Science and Technology (NTNU), Albania

    Google Scholar 

  • Ghasemi L (2008) Investigating the engineering properties of weathered Hornfels and its influence on the stability of Dolaei tunnel. The University of Tehran, Tehran (in Persian)

    Google Scholar 

  • Ghasemi L, Bohloli B, Tutti F (2007) Analysing the effects of Alvand metamorphic zone on the mechanical behaviour of rock masses and instability of the Dolaei (Tuyserkan) tunnel. In: Paper presented at the fifth international conference of engineering geology and environment, Tarbiat Modares University, Tehran 6–8 February (in Persian)

  • Ghiasvand S (1999) Mechanical behaviour anisotropy in schistose rocks with a perspective on schistose rocks of Hamadan area. Tarbiat Modares University (TMU), Tehran (in Persian)

    Google Scholar 

  • Ghiasvand S, Uromeihy A (2010) Assessing the effect of schistosity and foliation on the tensile strength of schistose rocks. In: Paper presented at the the first national conference and annual meeting for assessing achievements of the Iranian geologists, Islamic Azad University of Tehran, North Beanch, Tehran, Iran (in Persian)

  • Ghorbani M, Sharifzadeh M, Yasrobi S, Daiyan M (2012) Geotechnical, structural and geodetic measurements for conventional tunnelling hazards in urban areas: the case of Niayesh road tunnel project. Tunn Undergr Space Technol 31:1–8

    Article  Google Scholar 

  • Goel RK, Swarup A, Sheorey PR (2007) Bolt length requirement in underground openings. Int J Rock Mech Min Sci 44:802–811

    Article  Google Scholar 

  • Habibi A (2009) Excavation through the crushed and water bearing zones in the Imamzadeh Hashem Tunnel, Nouh Constructing Company, Tehran, p. 118 (in Persian)

    Google Scholar 

  • Haghshenas SS, Soumehsaraei MS, Jalilvand P, Haghshenas SS (2013) Evaluation of the most appropriate support system for Dolaei tunnel based on fuzzy logic. In: Paper presented at the international conference on civil engineering architecture and urban sustainable development, Tabriz, Iran

  • Hefny A, Tan W, Ranjith P, Sharma J, Zhao J (2004) Numerical analysis for umbrella arch method in shallow large scale excavation in weak rock. Tunn Undergr Space Technol 19:1–7

    Article  Google Scholar 

  • Hoek E (1999) Support for very weak rock associated with faults and shear zones. Distinguished lecture. In: Paper presented at the the international symposium on rock support and reinforcement practice in mining, Kalgoorlie, Australia

  • Hoek E (2001) Big tunnels in bad rock. J Geotech Geoenviron Eng 127:726–740

    Article  Google Scholar 

  • Hoek E (2004) Numerical modelling for shallow tunnels in weak rocks. Rocscience, Toronto. http://www.rocscience.com

  • Hoek E (2007) Practical rock engineering. Rocscience, Toronto

    Google Scholar 

  • Hoek E, Kaiser PK, Bawden WF (1995) Support of underground excavations in hard rock. CRC Press, Rotterdam

    Google Scholar 

  • Hoek E, Marinos P, Benissi M (1998) Applicability of the Geological Strength Index (GSI) classification for very weak and sheared rock masses. The case of the Athens Schist Formation. Bull Eng Geol Environ 57:151–160

    Article  Google Scholar 

  • Hoek E, Carranza-Torres C, Diederichs M, Corkum B (2008) The 2008 Kersten Lecture Integration of geotechnical and structural design in tunneling. In: 56th annual geotechnical engineering conference, 2008, pp 1–53

  • IRIMPO (2016) Manual for geophysical studies in road construction projects. Islamic Republic of Iran Management and Planning Organization, Tehran

    Google Scholar 

  • Jacobs JD (1975) Some tunnel failures and what they have taught. In: Paper presented at the the third international safety conference—hazards in tunneling and on falsework, London

  • Jalilvand P, Haghshenas SS (2013) The study of the stability of Tuyserkan Dolaei tunnel using reinforce shotcrete and rock bolt under static condition. In: Paper presented at the the 23rd International mining congress and exhibition of Turkey, Antalya, Turkey, 16–19 April 2013

  • Jalilvand P, Haghshenas SS, Haghshenas SS, Javan MH (2014) Evaluation of the dynamic resistance of the Toyserkan Dolaei tunnel by rock bolt and reinforced shotcrete composite system. In: Tunneling and underground construction. ASCE, pp 376–384. http://ascelibrary.org/doi/abs/10.1061/9780784413449.037

  • Karakus M (2007) Appraising the methods accounting for 3D tunnelling effects in 2D plane strain FE analysis. Tunn Undergr Space Technol 22:47–56

    Article  Google Scholar 

  • Karakus M, Fowell RJ (2003) Effects of different tunnel face advance excavation on the settlement by FEM. Tunn Undergr Space Technol 18:513–523

    Article  Google Scholar 

  • Karakus M, Fowell R (2004) An insight into the new Austrian tunnelling method (NATM). In: Paper presented at the ROCKMEC 2004, VIIth regional rock mechanics symposium, Sivas, Turkey

  • Karakus M, Fowell RJ (2006) 2-D and 3-D finite element analyses for the settlement due to soft ground tunnelling. Tunn Undergr Space Technol 21:1–7

    Article  Google Scholar 

  • Karfakis MG (1987) Chimney subsidence over abandoned coal mines. Int J Min Geol Eng 5:131–141

    Article  Google Scholar 

  • Karpuz C, Pasamehmetoglu AG (1997) Field characterisation of weathered Ankara andesites. Eng Geol 46:1–17

    Article  Google Scholar 

  • Khanlari G-R, Heidari M, Sepahigero A-A, Fereidooni D (2014a) Quantification of strength anisotropy of metamorphic rocks of the Hamedan province, Iran, as determined from cylindrical punch, point load and Brazilian tests. Eng Geol 169:80–90

    Article  Google Scholar 

  • Khanlari GR, Heidari M, Sepahi-Gero AA, Fereidooni D (2014b) Determination of geotechnical properties of anisotropic rocks using some index tests. Geotech Test J 37:1–13

    Article  Google Scholar 

  • Kimura F, Okabayashi N, Kawamoto T (1987) Tunnelling through squeezing rock in two large fault zones of the Enasan Tunnel II. Rock Mech Rock Eng 20:151–166

    Article  Google Scholar 

  • Koleini M (2012) Engineering geological assessment and rock mass characterization of the Asmari formation (Zagros range) as large dam foundation rocks in south-western Iran. University of Pretoria

  • Kratzsch H (1983) Mining subsidence engineering. Springer, Berlin

    Book  Google Scholar 

  • Lang TA, Bischoff JA (1982) Stabilization of rock excavations using rock reinforcement. In: The 23rd US symposium on rock mechanics (USRMS), 1982. American Rock Mechanics Association

  • Lowson A, Bieniawski Z (2013) Critical assessment of RMR based tunnel design practices: a practical engineer’s approach. In: Paper presented at the rapid excavation and tunneling conference

  • Malmgren L (2005) Interaction between shotcrete and rock—experimental and numerical study. Luleå University of Technology, Luleå

    Google Scholar 

  • Marenče M, Swoboda G (1995) Numerical model for rock bolts with consideration of rock joint movements. Rock Mech Rock Eng 28:145–165

    Article  Google Scholar 

  • Marinos V (2014) Tunnel behaviour and support associated with the weak rock masses of flysch. J Rock Mech Geotech Eng 6:227–239

    Article  Google Scholar 

  • Marinos P, Hoek E (2000) GSI: a geologically friendly tool for rock mass strength estimation. In: International conference on geotechnical and geological engineering—GeoEng 2000 Melbourne, Australia, 2000, pp 1422–1442

  • Marinos P, Hoek E (2001) Estimating the geotechnical properties of heterogeneous rock masses such as flysch. Bull Eng Geol Environ 60:85–92. doi:10.1007/s100640000090

    Article  Google Scholar 

  • Marinos V, Marinos P, Hoek E (2005) The geological strength index: applications and limitations. Bull Eng Geol Environ 64:55–65

    Article  Google Scholar 

  • Marinos P, Hoek E, Marinos V (2006) Variability of the engineering properties of rock masses quantified by the geological strength index: the case of ophiolites with special emphasis on tunnelling. Bull Eng Geol Environ 65:129–142

    Article  Google Scholar 

  • Nabavi MH (2006) A systematic approach to introduce the properties and parameters of the engineering geological environment of tunnels. In: Paper presented at the the 7th Iranian tunnelling conference: underground spaces science and technology development, Tehran, Iran (in Persian)

  • Nazeri SMH, Amiri R, Kolivand A (2004) Assessing the main effective factors contributing in the collapse of Dolaei tunnel in Touyserkan. In: Paper presented at the the 6th Iranian tunnelling conference, Iran University of Science and Technology, 27–29 January 2004 (in Persian)

  • NGI (2013) Using the Q-system—rock mass classification and support design, Norwegian Geotechnical Institute, Oslo, p. 54

    Google Scholar 

  • Oke J, Vlachopoulos N, Marinos V (2014) Umbrella arch nomenclature and selection methodology for temporary support systems for the design and construction of tunnels. Geotech Geol Eng 32:97–130

    Article  Google Scholar 

  • Oliveira DAF (2009a) An advancement in analytical modelling of soil-infilled rock joints and their practical applications. School of Civil, Mining and Environmental Engineering, Faculty of Engineering, University of Wollongong, Wollongong

    Google Scholar 

  • Oliveira DAF (2009b) Back-analysis based on the Pinheiros station collapse. Australasian Tunnelling Society, The 2009 David Sugden Young Engineers Award, pp 1–15

  • Osgoui RR, Ünal E (2009) An empirical method for design of grouted bolts in rock tunnels based on the geological strength index (GSI). Eng Geol 107:154–166

    Article  Google Scholar 

  • Osgoui RR, Ulusay R, Unal E (2010) An assistant tool for the Geological Strength Index to better characterize poor and very poor rock masses. Int J Rock Mech Min Sci 47:690–697

    Article  Google Scholar 

  • Palmström A (1995) RMi: a rock mass characterization system for rock engineering purposes. The University of Oslo, Oslo

    Google Scholar 

  • Pasamehmetoglu AG, Karpuz C, Irfan TY (1981) The weathering characteristics of Ankara andesites from the rock mechanics point of view. In: Paper presented at the ISRM international symposium, Tokyo, Japan, 1981/1/1

  • Peila D (1994) A theoretical study of reinforcement influence on the stability of a tunnel face. Geotech Geol Eng 12:145–168

    Article  Google Scholar 

  • Perman F, Sjoberg J, Olofsson O, Rosengren L (2007) Numerical analyses of shotcrete reinforcement. In: 11th ISRM congress, 2007. International society for rock mechanics

  • Perri G (2007) Behavior category and design loads for conventionally excavated tunnels. In: 11th ISRM congress, 2007. International society for rock mechanics

  • Piggott RJ, Eynon P (1978) Ground movements arising from the presence of shallow abandoned mine workings. In: Geddes JD (ed) Proceedings of the first international conference on large ground movements and structures, University of Wales, 1978. Pentech Press, London, pp 749–780

  • Pizzarotti EM (2001) Advantages and ground improvement effects of RPUM. In: Paper presented at the symposium on reinforced protective umbrella methods (RPUM) in tunnelling, Seoul, Korea

  • Pöttler R (1990) Time-dependent rock—shotcrete interaction a numerical shortcut. Comput Geotech 9:149–169

    Article  Google Scholar 

  • Potvin Y, Dight PM, Wesseloo J (2012) Some pitfalls and misuses of rock mass classification systems for mine design. J South Afr Inst Min Metall 112:01–06

    Google Scholar 

  • Saroglou H, Marinos P, Tsiambaos G (2004a) The anisotropic nature of selected metamorphic rocks from Greece. J South Afr Inst Min Metall 104:215–222

    Google Scholar 

  • Saroglou H, Marinos P, Tsiambaos G (2004b) Applicability of the Hoek–Brown failure criterion and the effect of anisotropy on intact rock samples from Athens Schist. J South Afr Inst Min Metall 104:209–215

    Google Scholar 

  • Schina S, Charalampidou A (2014) Athens metro line 3: complex tunnel geometries. Geotech Geol Eng 32:1451–1466

    Article  Google Scholar 

  • Schubert W (2008) Design and construction of tunnels in poor and faulted rock masses. In: ISRM international symposium, the 5th Asian rock mechanics symposium, 2008. International Society for Rock Mechanics

  • Schubert W, Fasching A, Goricki A (2006) Tunnelling in fault zones- state of the art. Tunn Undergr Space Technol 21:376–377

    Article  Google Scholar 

  • Selby AR (1999) Tunnelling in soils—ground movements, and damage to buildings in Workington, UK. Geotech Geol Eng 17:351–371

    Article  Google Scholar 

  • Sengupta S (1998) Influence of geological structures on in situ stresses. Indian Institute of Technology

  • Sharifi AH, Fatemi-Aghda SM, Uromeihy A (2011) Assessing the geotechnical characteristics of Dolaei tunnel based on findings of geological field observations in the area of Sarabi Dam’s reservoir. In: Paper presented at the 7th Iranian conference of engineering geology and the environment, Shahroud University of Technology, Shahroud, Semnan, Iran, August 2011 (in Persian)

  • Sharifzadeh M, Daraei R, Broojerdi MS (2012) Design of sequential excavation tunneling in weak rocks through findings obtained from displacements based back analysis. Tunn Undergr Space Technol 28:10–17

    Article  Google Scholar 

  • Sharifzadeh M, Kolivand F, Ghorbani M, Yasrobi S (2013) Design of sequential excavation method for large span urban tunnels in soft ground—Niayesh tunnel. Tunn Undergr Space Technol 35:178–188

    Article  Google Scholar 

  • Singh KB, Dhar BB (1997) Sinkhole subsidence due to mining. Geotech Geol Eng 15:327–341

    Google Scholar 

  • Singh B, Goel RK (2011) Engineering rock mass classification: tunnelling, foundations and landslides. Elsevier, Edinburgh

    Google Scholar 

  • Song K-I, Cho G-C, Chang S-B, Lee I-M (2013) Beam–spring structural analysis for the design of a tunnel pre-reinforcement support system. Int J Rock Mech Min Sci 59:139–150

    Google Scholar 

  • Stacey TR (2001) Review of membrane support mechanisms, loading mechanisms, desired membrane performance, and appropriate test methods. J South Afr Inst Min Metall 101:343–351

    Google Scholar 

  • Stille H, Palmström A (2008) Ground behaviour and rock mass composition in underground excavations. Tunn Undergr Space Technol 23:46–64

    Article  Google Scholar 

  • Truzman EIM (2009) Metamorphic rock mass characterization using the Geological Strength Index (GSI). In: Paper presented at the 43rd U.S. rock mechanics symposium and 4th US–Canada Rock Mechanics Symposium, Asheville, North Carolina, 2009/1/1

  • Uromeihy A, Ghiasvand S (1999) The effects of anisotropy on the compressive strength of schists rocks of Hamadan province. In: Paper presented at the 3rd symposium of the geological society of Iran, University of Shiraz, Shiraz, Iran 1–2 September 1999 (in Persian)

  • Ván P, Vásárhelyi B (2013) Sensitivity analysis of the generalized Hoek–Brown failure criterion. In: Paper presented at the ISRM international symposium, EUROCK 2013, Wroclaw, Poland

  • Vásárhelyi B, Ván P (2006) Influence of water content on the strength of rock. Eng Geol 84:70–74

    Article  Google Scholar 

  • Vlachopoulos N, Diederichs MS (2014) Appropriate uses and practical limitations of 2D numerical analysis of tunnels and tunnel support response. Geotech Geol Eng 32:469–488. doi:10.1007/s10706-014-9727-x

    Article  Google Scholar 

  • Whittaker BN, Reddish DJ (1989) Subsidence occurrence, prediction and control. In: Developments in geotechnical engineering, vol 56. Elsevier, Amsterdam

  • Wittke W (1988) Design and construction of a shallow tunnel with large span in an urban area. Int J Min Geol Eng 6:127–146. doi:10.1007/bf00880803

    Article  Google Scholar 

  • Yousefi Rad M, Mansouri M, Jalilvand P (2013) Assessing the effects of rock bolts on stabilising tunnels in schistose rocks—a case study of Dolaei tunnel in Touyserkan. In: Paper presented at the international conference on civil engineering architecture and urban sustainable development, Tabriz, Iran

  • Yu C, Chern J (2007) Expert system for D&B tunnel construction. In: underground space the 4th dimension of Metropolises, London, England

  • Zang A, Stephansson O (2009) Stress field of the Earth’s crust. Springer Science and Business Media, Dordrecht

    Google Scholar 

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Acknowledgements

The work described in this paper has received financial support from the University of Newcastle, Australia and the Australian Research Council through DP110101654. The authors are grateful for this support.

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  1. Australian Research Council Centre of Excellence for Geotechnical Science and Engineering, The University of Newcastle, Callaghan, NSW, 2308, Australia

    Ebrahim Fathi Salmi & Majidreza Nazem

  2. Centre for Geotechnical and Materials Modelling, The University of Newcastle, Callaghan, NSW, 2308, Australia

    Anna Giacomini

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Salmi, E.F., Nazem, M. & Giacomini, A. A Numerical Investigation of Sinkhole Subsidence Development over Shallow Excavations in Tectonised Weak Rocks: The Dolaei Tunnel’s Excavation Case. Geotech Geol Eng 35, 1685–1716 (2017). https://doi.org/10.1007/s10706-017-0202-3

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