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Keywords: lining
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Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2020, June 14–19, 2020
Paper Number: ISRM-EUROCK-2020-059
... Abstract A concern during the design of an undrained tunnel lining is the possibility of a high groundwater pressure occurring behind the lining. If the lining is applied only to the tunnel walls and crown, flow to the invert may cause a pressure alleviation, possibly enhanced by an excavation...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2020, June 14–19, 2020
Paper Number: ISRM-EUROCK-2020-030
... follow a logarithmic curve. With the empirical factors a=10 and b=0.04, a correlation could be found in (1). For swelling tests Q2-1 and Q2-2 (red line) the identical sample (T03.8-3) was used, which experienced a sudden increase in axial free swelling from approximately 60 days onwards. This could be...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-112
...]. reservoir simulation davila mendez procedia engineering 191 tunnel axis foliation strike orientation Upstream Oil & Gas numerical simulation strike perpendicular rock mass relative orientation foliation orientation Magnitude displacement lining dip angle foliation perpendicular...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-059
... lines, crossing roads and an eye hospital with minimum 8.0 m to maximum 41.0 m overburden. The Eurasia Tunnel Project NATM Tunnels had been successfully excavated with the primary and final Figure 1. The Eurasia Tunnel Project Alignment and Loca- tion of Twin NATM Tunnels. lining almost completed at the...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-112
... ABSTRACT: More recently, the demand for application of segmental tunnel lining has been raised for both long & deep tunnel in rock and shallow tunnel in soft ground, particularly in urban areas. From technical and economical points of view, a proper dimensioning of the segmental lining has...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-123
... The Semmering Base Tunnel (SBT) is situated in Eastern Austria and is part of the Baltic-Adriatic Corridor, which is one of the most important cross-Alpine lines in Europe. Based on extensive geological investigation in the station and alignment selection procedure and environmental impact assessment...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-088
... diameter of 6.8 m and the 2800 m long Silvretta high pressure tunnel. The maximum overburden is roughly 1100 m. Both the inlet tunnel and the Silvretta high pressure tunnel are lined with pre-casted segmental linings in the invert and an in-situ concrete shell. The last 600 m of the Silvretta tunnel are...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-119
...) Uncertainties in the ground model and its consequences on the design Inner lining and the long-term stability of the primary support TBM and pre-cast concrete segments Pressure water conduits 2 STRUCTURAL DESIGN OF SHOTCRETE LININGS 2.1 Motivation After a period of coexistence with former...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-154
... percent of clay is selected for physical modeling, as the PoP alone shows brittle behavior. It is interpreted that the height of overburden is a critical factor in correlating degree of fracture and damage to the tunnel - lining. Series of experiments are carried out with lining materials and litho-static...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-164
... ABSTRACT: A pilot scale research was carried out to verify the feasibility of compressed air storage in lined rock cavern. Two caverns with a diameter of 6m were excavated at a depth of 100 m below the surface ground in a mine. This paper presents assessment technologies of geomechanical...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-203
... INTRODUCTION The Semmering Base Tunnel (SBT) is situated in Eastern Austria and is part of the Baltic-Adriatic Corridor, which is one of the most important cross-Alpine lines in Europe (httpwww.baltic- adriatic.eu/en/baltic-adriatic-axis/corridor-1). The tunnel is about 27.3 km long and is excavated from the...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-144
... obtained results such as deformations, strains, stresses, pore pressure, utilisation, forces in the deformation elements and lining sectional forces etc. are time dependent. In order to achieve an acceptable system behaviour, the support measures had to be adjusted to the considered rock conditions. These...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-185
... relatively fast alternative as suggested by Vermeer et al. (2002). This procedure leads to an estimate of the relaxation factor, which allows to reproduce the 3D subsidence phenomena using a 2D analysis. However, the so calibrated λ-value does not guarantee the match of lining forces and displacements as...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-191
... conditions are commonly associated with high loads and massive deformation of the lining. The idea of using ductile elements in the lining has become a well-known practice in such conditions. During the last century, different solutions have been developed. In this paper, the focus is on Telescope-Yielding...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-142
... new concrete lining for those parts of the tunnels, which will be used as tailrace tunnels are underway. The present paper describes the present conditions of diversion tunnels No. 1 & 2 and explains the procedure used for stress analyses of tailrace tunnel No. 1 without and with the new lining...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-004
... consists of a 2.81 km long concrete lined 7.5 m diameter horseshoe section headrace tunnel leading to a 58.0 m high surge shaft of 18.0 m diameter. Pressure shaft of 6.4 m diameter takes off from the surge shaft and is designed for a maximum discharge of 185.0 cumecs, 6.4 m diameter pressure shaft...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-014
... used at that time, which based on a stiff temporary timber support, was unable to bear the extreme pressures acting on the tunnel lining. Almost a century later construction of a road base tunnel was performed according to NATM allowing large deformations by leaving longitudinal slots in the primary...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-005
... separately. In almost all areas a prediction of materials and structural components towards lifetime exists. System-wide investigations were rarely performed, so that there is no technical lifetime consideration of the outer lining in systems included. cross passage long-term behaviour rock bolt...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-030
... revealed that a landslide was occurring, loading the gallery lining. As stabilization of the slope was not an option for several reasons, it was decided to replace the gallery by a new one deeper inside the slope, which will be ready for operation in 2017. Thus the old gallery has to be kept in operation...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-016
... tunnel closure new emergency bay ground transportation safety passageway shotcrete general renovation tunnel emergency bay Arlberg Road Tunnel construction work construction traffic supply air duct lining excavation work installation ?? ABSTRACT: The Arlberg Road Tunnel with a length...

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