... Reservoir Characterization weak zone NATM tunnel orientation geological structure pilot tunnel US government correlation periphery mapping technique excavation geological data water periphery map tunnel reservoir geomechanics bedding orientation prediction geological periphery...

... 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...

... as the sometimes abrupt lithologic variations, provide the rock mass with a fairly heterogeneous character. Reservoir Characterization displacement characteristic Madeira Island pilot tunnel volcanic formation Artificial Intelligence excavation front design stage excavation application superior...

... Reservoir Characterization seismic tomography prediction chalk resolution acquisition geometry discontinuity Upstream Oil & Gas cavern pilot tunnel investigation Israel borehole tomographic survey geometry tomography major rock discontinuity excavation tomogram flexer...

... 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...

... 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...

... 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...