Top

Geotechnical and Geological Engineering

Published in:

04-11-2020 | Original Paper

Longitudinal Deformation Profiles for Sequentially Supported Deep Tunnels in Strain-Softening Hoek–Brown Rock Mass

Authors: Vasileios I. Gkikas, Pavlos P. Nomikos

Published in: Geotechnical and Geological Engineering | Issue 3/2021

Activate our intelligent search to find suitable subject content or patents.

search-config

AI-assisted search

Off

Abstract

Numerical methods are commonly applied in tunneling design practice for the prediction of rock mass behavior during tunnel construction and for primary support dimensioning. Although the sequential excavation and primary support installation in phases is a complex three-dimensional problem, in practice it is usually approximated with plane strain simulations. For their correct application, the knowledge of the confinement level prior to the installation of the support is necessary and requires the construction of an accurate longitudinal deformation profile. This study presents a practical methodology for the estimation of the confinement level at the support installation position based on the execution and interpretation of a large number of plane strain, axisymmetric and 3D numerical simulations. All simulations incorporate sequential excavation and support cycles in confinement depended strain-softening Hoek–Brown rock mass. The results indicate the importance of the post-peak rock mass behavior and the influence of the installed support to the confinement level for both top-head and bench excavation and support stages.

previous article A Probabilistic Model to Determine Main Caving Span by Evaluating Cavability of Immediate Roof Strata in Longwall Mining

next article Analysis of Cooperative Control Effect of Pressure Relief and Long Bolt Support for Deep Roadway Under Strong Mining Disturbance of Adjacent Working Face

Dont have a licence yet? Then find out more about our products and how to get one now:

Springer Professional "Wirtschaft+Technik"

Online-Abonnement

Mit Springer Professional "Wirtschaft+Technik" erhalten Sie Zugriff auf:

über 102.000 Bücher
über 537 Zeitschriften

aus folgenden Fachgebieten:

Automobil + Motoren
Bauwesen + Immobilien
Business IT + Informatik
Elektrotechnik + Elektronik
Energie + Nachhaltigkeit
Finance + Banking
Management + Führung
Marketing + Vertrieb
Maschinenbau + Werkstoffe
Versicherung + Risiko

Jetzt Wissensvorsprung sichern!

inform now

Springer Professional "Technik"

Online-Abonnement

Mit Springer Professional "Technik" erhalten Sie Zugriff auf:

über 67.000 Bücher
über 390 Zeitschriften

aus folgenden Fachgebieten:

Automobil + Motoren
Bauwesen + Immobilien
Business IT + Informatik
Elektrotechnik + Elektronik
Energie + Nachhaltigkeit
Maschinenbau + Werkstoffe

Jetzt Wissensvorsprung sichern!

inform now

Alejano LR, Alonso E, Rodríguez-Dono A, Fernández-Manín G (2010) Application of the convergence-confinement method to tunnels in rock masses exhibiting Hoek-Brown strain-softening behaviour. Int J Rock Mech Min Sci 47:150–160. https://doi.org/10.1016/j.ijrmms.2009.07.008CrossRef

Alejano LR, Rodriguez-Dono A, Alonso E, Fdez-Manín G (2009) Ground reaction curves for tunnels excavated in different quality rock masses showing several types of post-failure behaviour. Tunn Undergr Sp Technol 24:689–705. https://doi.org/10.1016/j.tust.2009.07.004CrossRef

Alejano LR, Rodríguez-Dono A, Veiga M (2012) Plastic radii and longitudinal deformation profiles of tunnels excavated in strain-softening rock masses. Tunn Undergr Sp Technol 30:169–182. https://doi.org/10.1016/j.tust.2012.02.017CrossRef

Bernaud D, Rousset G (1996) The new implicit method for tunnel analysis. Int J Numer Anal Methods Geomech 20:673–690. https://doi.org/10.1002/(sici)1096-9853(199609)20:9%3c673::aid-nag845%3e3.3.co;2-0CrossRef

Cai M, Kaiser PK, Tasaka Y, Minami M (2007) Determination of residual strength parameters of jointed rock masses using the GSI system. Int J Rock Mech Min Sci 44:247–265. https://doi.org/10.1016/j.ijrmms.2006.07.005CrossRef

Carranza-Torres C (2004) Elasto-plastic solution of tunnel problems using the generalized form of the hoek-brown failure criterion. Int J Rock Mech Min Sci 41:629–639. https://doi.org/10.1016/j.ijrmms.2004.03.111CrossRef

Carranza-Torres C, Fairhurst C (2000) Application of the convergence-confinement method of tunnel design to rock masses that satisfy the Hoek-Brown failure criterion. Tunn Undergr Sp Technol 15:187–213. https://doi.org/10.1016/S0886-7798(00)00046-8CrossRef

Chern JC, Shiao FY, Yu CW (1998) An empirical safety criterion for tunnel construction. In: Proceedings of the regional symposium on sedimendary rock engineering. Taipei, Taiwan, pp 222–227

Cundall PA, Carranza-Torres C, Hart RD (2003) A new constitutive model based on the Hoek–Brown criterion. In: Andrieux P, Brummer R, Detournay C, Hart R (eds) FLAC and numerical modeling in geomechanics 2003. Proceedings 3rd international FLAC symposium, Balkema, Lisse, pp 17–25

Deere DU, Miller RP (1966) Engineering classification and index properties of rock. Technical report Air Force Weapons Lab, New Mexico, pp 65–116. New Mexico

Duncan Fama ME (1993) Numerical modelling of yield zones in weak rocks. In: Hudson JA (ed) Comprehensive rock engineering. Pergamon, Oxford, pp 49–75

Graziani A, Boldini D, Ribacchi R (2005) Practical estimate of deformations and stress relief factors for deep tunnels supported by shotcrete. Rock Mech Rock Eng 38:345–372. https://doi.org/10.1007/s00603-005-0059-2CrossRef

Hoek E (1999) Support for very weak rock associated with faults and shear zones. rock support and reinforcment practice in mining. In: Proceedings of international symposium on grade support, Kalgoorlie, March 1999. pp 19–32. https://doi.org/10.1201/9780203740460-2

Hoek E, Brown ET (2019) The Hoek-Brown failure criterion and GSI–2018 edition. J Rock Mech Geotech Eng 11:445–463. https://doi.org/10.1016/j.jrmge.2018.08.001CrossRef

Hoek E, Carranza C, Corkum B (2002) Hoek–Brown failure criterion–2002 edition. Narms-Tac pp 267–273. https://doi.org/10.1016/0148-9062(74)91782-3

Hoek E, Diederichs MS (2006) Empirical estimation of rock mass modulus. Int J Rock Mech Min Sci 43:203–215. https://doi.org/10.1016/j.ijrmms.2005.06.005CrossRef

Hoek E, Marinos P (2000) Predicting tunnel squeezing problems in weak heterogeneous rock masses. Tunnels Tunn Int Part 1–2:1–20

Itasca Consulting Group Inc., 2017. FLAC3D — fast lagrangian analysis of continua in three-dimensions, version. 6.0. Minneapolis, Itasca

Lee YK, Pietruszczak S (2008) A new numerical procedure for elasto-plastic analysis of a circular opening excavated in a strain-softening rock mass. Tunn Undergr Sp Technol 23:588–599. https://doi.org/10.1016/j.tust.2007.11.002CrossRef

Marinos P, Marinos V, Hoek E (2007) Geological strength index (GSI). a characterization tool for assessing engineering properties for rock masses. underground works under special condition. In: Proceedings of the ISRM workshop W1. pp 13–21. https://doi.org/10.1201/noe0415450287.ch2

Oke J, Vlachopoulos N, Diederichs M (2018) Improvement to the convergence-confinement method: inclusion of support installation proximity and stiffness. Rock Mech Rock Eng 51:1495–1519. https://doi.org/10.1007/s00603-018-1418-0CrossRef

Panet M (1995) Calcul des tunnels par la me’thode de convergence-confinement. Presses de l’Ecole Nationale des Ponts et Chausse’es, Paris

Sakurai S (1983) Displacement measurements associated with the design of underground openings, pp 1163–1178, s. F. Meas. Geomech. Zurich

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. https://doi.org/10.1007/s10706-014-9727-xCrossRef

Vlachopoulos N, Diederichs MS (2009) Improved longitudinal displacement profiles for convergence confinement analysis of deep tunnels. Rock Mech Rock Eng 42:131–146. https://doi.org/10.1007/s00603-009-0176-4CrossRef

Vrakas A, Anagnostou G (2014) A finite strain closed-form solution for the elastoplastic ground response curve in tunneling. Int J Numer Anal Methods Geomech 38:1131–1148. https://doi.org/10.1002/nag.2250CrossRef

Title: Longitudinal Deformation Profiles for Sequentially Supported Deep Tunnels in Strain-Softening Hoek–Brown Rock Mass
Authors: Vasileios I. Gkikas
Pavlos P. Nomikos
Publication date: 04-11-2020
Publisher: Springer International Publishing
Published in: Geotechnical and Geological Engineering / Issue 3/2021
Print ISSN: 0960-3182
Electronic ISSN: 1573-1529
DOI: https://doi.org/10.1007/s10706-020-01621-x

Springer Professional

Abstract

Please log in to get access to your license.

Dont have a licence yet? Then find out more about our products and how to get one now:

Springer Professional "Wirtschaft+Technik"

Springer Professional "Technik"

Other articles of this Issue 3/2021

Study on the Support Capacity Determination and Movement Law of Overlying Strata in a Thin-Bedrock Large-Cutting-Height Longwall Panel

Analysis of Clay Slopes with Piles Using 2D and 3D FEM

Three-Dimensional Numerical Analyses of Perpendicular Tunnel Intersections

Numerical Investigation of Consolidation Induced by Prefabricated Horizontal Drains (PHD) in Clayey Deposits

Numerical Study of Stability and Connectivity of Vertical Goaf Drainage Holes

Rock Mass Classification by Multivariate Statistical Techniques and Artificial Intelligence