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Keywords: lining
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Proceedings Papers

Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-244
.... Experience in Alpine tunnels over the last decades has shown that closed shotcrete linings can sustain a strain of approximately 0.8% to 1% without failure. Any strain above this value inevitably leads to failure of the lining, and thus a loss of resistance, causing additional displacements. Based on a large...
Proceedings Papers

Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-271
... Abstract Demand of high pressurized gas storage in underground rock caverns is increasing. Compressed natural gas (CNG) and compressed air energy storage (CAES) are one of the promising examples after since lined rock cavern (LRC) concept has been verified through in-situ pilot tests. Two key...
Proceedings Papers

Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-402
... deterioration of tunnel drainage system on the final lining was also illustrated based on the results of a numerical simulation on hypothetical tunnelling conditions. GEOSYNDTHETICS FUNDAMENTALS Geosynthetics, a sub sector of technical textile products, are used in geotechnical applications such as civil...
Proceedings Papers

Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-388
.... Studies are also done to quantify the improvement of stability on the introduction of lining around the tunnels in a weak cemented soil mass like sandstone. KEYWORDS Underground structures, stability, discrete element method, finite element method INTRODUCTION Most of the life line facilities which...
Proceedings Papers

Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-166
... from the foundation of the overpass, therefore the stability and surface deformation control of that section s tunnel excavation is particularly important. Taking Xi'an Metro Line Three interval tunnel as a research object, we have used FLAC3D simulation to analyze the tunnel s surrounding soil...
Proceedings Papers

Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-196
... water and or empty cavities behind the lining which may be considered major causes of lining weathering. This paper will show how the application of this technique based on laser scanning images analysis modified the tunnel inspection process, necessary for assessing the tunnel condition...
Proceedings Papers

Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-218
... displacement mechanism lining shoulder part tunnel ground transportation earthquake damage flexural compression failure seismic damage mountain tunnel rail transportation local displacement experiment experiment model tunnel Crown shear deformation deformation aseismic...
Proceedings Papers

Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-210
... ABSTRACT This study utilizes 2D numerical simulation to investigate the seismically induced stress and deformation on tunnel lining caused by an incident Rayleigh wave. Results of simulation indicate that the seismically induced stresses increase as the tunnel depth decrease while the depth...
Proceedings Papers

Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-289
... ABSTRACT The performance of underground structures such as rail, road and hydropower tunnels can be adversely affected in seismic regions. Several cases have been reported on damages to underground structures during earthquake events. The damages reported have been fallen lining from the roof...
Proceedings Papers

Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-294
... pressure, the stress state within the failure zone around the tunnel is at failure limit. However, in case of an increasing support pressure after lining placement, a recompression of the ground in radial direction can be observed. In these cases the final equilibrium will be above the ground reaction...
Proceedings Papers

Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-303
... ABSTRACT Concrete lining is at times adopted as part of the support members for mountain tunnels. In the case of concrete lining for road tunnels in particular, concrete lining with a 30 cm width is applied at a standard rate of 10.5mper two days, due to the characteristics of construction...
Proceedings Papers

Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-308
... hydrostatic pressures behind shaft liners in the longer term; and the development of potentially significant swelling pressures behind shaft liners in some anhydritic shales and marls when water is introduced to these formations. The approach adopted in designing the lining of a 7m finished diameter vertical...
Proceedings Papers

Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-325
... ABSTRACT The structural design of permanent reinforced concrete linings of tunnels involves significant uncertainties, principally related to the simplistic representation of the concrete structure interaction with the surrounding geological medium and the inherent limitations pertaining to...
Proceedings Papers

Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-330
... with a wind energy generation facility. In underground CAES cavern in lined rock, installation of a concrete plug is essential to seal the compressed air stored in the container; therefore, the selection of the shape and dimension of the concrete plug could be a critical design factor. Stability...
Proceedings Papers

Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-326
... consequence. Various approaches for a ductile support system appropriate for such geotechnical conditions have been proposed, developed and applied. The ductility of a shotcrete lining is usually ensured by integrating yielding elements. In order to prevent overloading of the young shotcrete, the elements...
Proceedings Papers

Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-327
... expansions due to gypsum crystal growth in tunnels. The paper describes the case of Lila tunnel which required a substantial reconstruction after experiencing severe heave problems. Long term records of swelling pressures and stresses in the lining are also given. Subject: Rock engineering in hazardous geo...
Proceedings Papers

Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-019
... convergence. A large core extrusion represents a sufficient but not a necessary condition for large convergences to occur after excavation. theoretical analysis prediction Anagnostou cantieni 2011 displacement tunnel face lining core extrusion time-dependent behaviour ground behaviour...
Proceedings Papers

Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-024
... data mining back analysis proceedings Upstream Oil & Gas information Reservoir Characterization long-term deformation physical property observational construction support pattern deformation lining rock mass tunnel reservoir geomechanics subsidence displacement numerical...
Proceedings Papers

Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-050
...Harmonising Rock Engineering and the Environment Qian & Zhou (eds) © 2012 Taylor & Francis Group, London, ISBN 978-0-415-80444-8 Analytical study on underground continuous impervious curtain for shaft lining treatment at eastern Chinese coal mines Q. Yu, H. Shimada, T. Sasaoka & K. Matsui...
Proceedings Papers

Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-012
.... mitigation measure construction method hazard system behavior banking & finance displacement prediction requirement risk management information Schubert orientation excavation failure mode construction ground model University ground behavior probability lining consequence tunnel...

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