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Keywords: pilot tunnel
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Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2013, October 23–26, 2013
Paper Number: ISRM-EUROCK-2013-134
...) in 1981, are processed on periphery maps. So the areas, additional support measures to be taken, will be selected. NATM is a method of gradual excavation. The NATM tunnels which is designed to initially opening of the pilot tunnel, geological and geotechnical properties of the tunnel on the main section...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2009, October 29–31, 2009
Paper Number: ISRM-EUROCK-2009-107
... of Iran. Reservoir Characterization convergence-confinement method convergence excavation reservoir geomechanics ground reaction curve pilot tunnel Upstream Oil & Gas rock mass numerical analysis shotcrete contact zone displacement ground condition appropriate support system...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2002, November 25–27, 2002
Paper Number: ISRM-EUROCK-2002-073
... that it would be important to define that the tunnels excavation should begin by the execution of a pilot tunnel located at the central zone of the superior half section (Fig. 3). Figure 3. East portal of the S. Cruz West tunnel (pilot tunnel and widening of the superior half section) 659 The pilot tunnels...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 96, September 2–5, 1996
Paper Number: ISRM-EUROCK-1996-116
... locations of the discontinuities. The tomographic surveys were carried out in the pilot tunnel of the cavern, and utilised boreholes drilled upwards from the crown and downwards at invert level. Rather than adopting the conventional cross-hole tomographic acquisition arrangement, the seismic measurements...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 96, September 2–5, 1996
Paper Number: ISRM-EUROCK-1996-093
... ABSTRACT: This paper deals with the possibility of the new drilling and blasting method which involves drilling of charge holes performed radially in advance on the wall of a pilot tunnel. Verification of the dynamic response between the existing method and the new one is performed to compare...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 96, September 2–5, 1996
Paper Number: ISRM-EUROCK-1996-177
... programme carried out in advance of tunnelling are described and compared with those obtained during the TBM excavation of a pilot tunnel. Considerations are also reported on the second, widening to full size, phase of tunnelling. RESUME: Ce texte donne une description des etudes effectues afin...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 96, September 2–5, 1996
Paper Number: ISRM-EUROCK-1996-128
... ABSTRACT: Pinglin tunnel, which is 12.9 km in length, is under construction in Taiwan. Three tunnels, including two separated main tunnels with 12m in diameter and one pilot tunnel with 5m in diameter, are parallel in direction and were constructed simultaneously. Large deformation of main...

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