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Keywords: tunnel face
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Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-028
... Abstract We propose a computational method for assessing bolt reinforcement of the tunnel face in cohesive frictional soils and weak rocks under seepage flow conditions. The method is based on limit equilibrium factors and can be applied to reinforcement layouts that are arbitrary in terms...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-108
... prediction method, analyses electric fields through the tunnel-ahead rock mass between sensors attached to the tunnel face. TEPS requires approximately two hours overall for measurements and analyses, and it predicts 3–4 times the tunnel diameter ahead of the tunnel face. In this study, tunnel-ahead...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-067
... that the equilibrium points obtained by 3-dimensional analysis which represents advance of the tunnel face have deviations from those by 2-dimensional (plane strain) analysis. Final ground displacement and final support pressure obtained by 3-D analysis might be bigger than the values by 2-D analysis. But the reason...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-169
... Zone Reservoir Characterization calculation tunnel face repository Calculation Method equation gsi calculation determination kovács Hoek Rock Mechanics and Rock Engineering: From the Past to the Future Ulusay et al. (Eds) © 2016 Taylor & Francis Group, London, ISBN 978-1-138-03265-1...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-204
.... This monitoring study in the immediate vicinity of the tunnel face is the first one in the world so far within the knowledge of the authors. In this paper, the authors describe the several monitoring studies and the results obtained so far. They also discuss the implications of this study within the integrated...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-188
... Nuclear Power Plant (NPP). The present paper discusses the stability issue of the tunnel face, including investigation of the Western Exploratory Tunnel (WET) of the NRWR. The face stability has been analyzed assuming that the WET crosses a fault-zone, which dominantly consists of weak, highly fractured...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-020
... deformation tunnel face steel pipe tunnel shotcrete poligon station injection shotcrete thickness ABSTRACT: The main structure of the Poligon station, which is situated on route of Üçyol- Üçkuyular line as part of Izmir subway development works consists of diaphragm wall. Under the diaphragm wall...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-031
... landslide-sliding surface inclinometer size twin tunnel tunnel face warning systems tunnel excavation landslide response excavation tunnel monitoring landslide displacement rate interpretation cross section ABSTRACT: The interaction between deep seated landslides and infrastructure...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-150
... University of Technology, Austria R. Galler Chair of Subsurface Engineering, Montanuniversität Leoben, Austria ABSTRACT: As only a small part of the tunnel face of a TBM-driven tunnel can be inspected visually, a photographic documentation was tested, in order to get a more holistic picture. For this purpose...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-180
..., installed during excavation above and around the crown of the tunnel face. The Umbrella Arch can consist of a variety of support ele- ments, however, for the purposes of this paper, a UA system with forepole elements was investigated. Fore- pole temporary support elements are installed when a difficult...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-170
... the tunnel face in the beginning, and turn to a stable state at 2 3D away from the tunnel face; the pre-displacement of the surrounding rock accounting for 30% of the total displacement. Thereby, sufficient attention must be paid to the pre-displacement of the surrounding rock in design and construction...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-178
.... Introduction Tunnel face stability is a big concern in tunneling excavated in soils or soft rock masses, because it is the source of many collapses. For tunneling in soils, it is common to employ EPB or Slurry TBM, whereas excavation methods without face support and with great cross sections are often used...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-091
... Upstream Oil & Gas RME metals & mining TBM shale asturia Reservoir Characterization methane tunnel face emiliano formation oviedo Pajare tunnel emission excavation tunnel Excavability structural geology injection correlation instability Bieniawski north portal Rock...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2012, May 28–30, 2012
Paper Number: ISRM-EUROCK-2012-057
... the arch effect by (Lunardi, 2000). This aid in stress flow is said to minimize pressure at the tunnel face. In order to attempt to determine the true impact of a forepole umbrella on an excavation, an extensive 3D numerical model is needed. The unique behaviour of a longitudinal face support element...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2012, May 28–30, 2012
Paper Number: ISRM-EUROCK-2012-029
... hydraulic fracturing orientation Artificial Intelligence Upstream Oil & Gas fracture mapping swedish nuclear fuel equation of state Terzaghi Terzaghi correction factor eurock 2012 Stockholm tunnel face fluid modeling complex reservoir natural fracture borehole correction...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2012, May 28–30, 2012
Paper Number: ISRM-EUROCK-2012-144
... Abstract: The Convergence Confinement Method (CCM) is a 2D simplified approach for resolving 3D rock-support interaction problems associated with the installation of support near a tunnel face in underground excavations. Some authors have recently put forward the idea that the behaviour...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2012, May 28–30, 2012
Paper Number: ISRM-EUROCK-2012-056
... Tunnel face stability in narrow water-bearing fault zones S. Zingg, G. Anagnostou ETH Zurich, Zurich, Switzerland Abstract: Tunnel engineers understand under the term "fault zone" to mean a tunnel section of limited length requiring special measures and involving considerable delays and high costs...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2010, June 15–18, 2010
Paper Number: ISRM-EUROCK-2010-081
... support system lining final lining Reservoir Characterization overstress tunnel face final lining loading Upstream Oil & Gas temporary support measure shotcrete creep time-dependent load geomaterial hydrostatic pressure construction Rock Mechanics in Civil and Environmental...

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