... in fault zones with high overburden. Whether this causes problems very much depends on the design approach used. On the one hand, the magnitude of expected displacements has to be predicted prior to excavation to provide for enough allowance for the displacements without violating the clearance profile...

... Abstract Successive seismic waves may cause progressive weakening of a fault zone, which has been recognized as the mechanism of earthquake aftershocks. However, it is unclear that how a fault zone slips under each wave cycle and how slip displacement accumulates under continuous wave cycles...

.... The maximum overburden amounts to 160 m. The limestones are mostly horizontally bedded and vertically jointed. Occasionally also inclined joints exist. The tunnels cross various fault zones, which mostly strike at an acute angle to the tunnel axis and are steeply inclined. The karstic cavities which were...

... Reservoir Characterization flow in porous media fault core fracture characterization 13th international congress Mont Terri main fault rock mechanics isrm13 Tournemire experiment Fault Zone Upstream Oil & Gas Characterize Fault variation opalinus clay Nussbaum reservoir...

... summarizes results of a cooperative study aimed at improving longwall mining operations in Illinois. More specifically, the study focused on: In-mine measurements in development entries while mining ahead of and behind a faulted zone, Making observations on stability of pillars and entries while mining...

...) which is located in Toarcian shales. Several inclined boreholes were drilled across the 8.5 m thick fault zone characterized by a fractured damage zone (FDZ) and a central 2.4 m thick complex core (FC) made of multiple shear bands with gouge intercalated with highly fractured lenses. The fault...

...MULTIPHYSICS COUPLINGS AND STABILITY OF FAULT ZONES J. Sulem, I. Stefanou Université Paris-Est, Laboratoire Navier-CERMES, Ecole Nationale des Ponts ParisTech, 6,8 Avenue Blaise Pascal 77455, Marne-la-Vallée, France (*Corresponding author: jean.sulem@enpc.fr) Innovations in Applied and Theoretical...

... rock conditions, the Tunnel Seismic Prediction (TSP) proved its efficiency in Figure 1. Standard Tunnel Seismic Prediction layout in TBM tun- neling. The acoustic waves released by small explosive charges (only wave rays shown) hit a geological discontinuity (e.g. fault zone) and are being reflected...

... Element Method model was developed, with a specific hydro-mechanical coupling, where flow takes place only in the fractures and the rock matrix is impermeable and deformable. The constitutive law of the fault zones is a Mohr-Coulomb law for the mechanical part with an independent associated dilatancy law...

... overburden information database ground transportation tunnel tube homogeneous zone cost center support classification excavation method rail transportation support class Chainage tunnel rock mass type relevance Fault Zone alignment geotechnical homogeneous zone geomechanical...

... determined in the secondTCDP hole (Hole B), which is located just 40m away from Hole A (Lin et al., 2006a). 2 ASR MEASUREMENT AND THREE-DIMENSIONAL IN-SITU PRINCIPAL STRESS ORIENTATION Three major fault zones were encountered at a depth range from 1050m to 1250m in Hole A, which was considered...

... hydraulic fracturing displacement subsidence vertical settlement Artificial Intelligence consolidation mechanism Gotthard highway tunnel fracture settlement crystalline rock mass stiffness tunnel drainage tunnel deformation surface subsidence rock mass Fault Zone Magnitude 1365 Zangerl...

... research has been conducted (Grossauer 2001). For safe and economical tunnelling through heterogeneous rock mass conditions a continuous adaptation of the support and excavation concept is required. vavrovsky deviation excavation Fault Zone knowledge management Rock mechanics evaluation...

...: a pneumatic hammer with laser triggering to be mounted on construction machinery. A user-friendly software package permits online data acquisition and processing, 3D-visualization, and a first geological interpretation. Tomographic images of compressional and shear wave velocity fields at fault zones...

... Intelligence stability analysis Wismut GmbH sustainable stability proof cross section investigation main dam conglomerate Helmsdorf basic dam stability geological dam engineering profile boundary dam Fault Zone Sustainable stability proof of highest tailings dam in Europe Preuve complexe de...

... Fault Zone storage construction determination perpendicular Geotechnical investigation for cavern-type underground natural gas storage Prospections geotechniques pour I'elaboration d'un reservoir de gaz naturel en caverne Geotechnische Untersuchung der untertagigen Erdgasspeicherung in Kavernen...

... stuck as a consequence of overstressing and 25 cm block movement on the right wall, when crossing through a fault zone with clay filling and gouge. RÉSUMÉ: Ce texte demontre I'utilisation de la modelisation continue et discontinue pendant l'excavation de tunnels. L'etude d'un tunnel excaves avec...

... ABSTRACT: Brittle fault zones in tunneling are often zones geotechnically difficult to drive through. In the eastern Aar massif an ENE- WSW and a NW-SE strike of steeply dipping brittle faults can be distinguished. Most brittle fault zones reactivated mechanically weak zones. The brittle fault...

... for assessing the effect of discontinuity zones on monitoring data. The influence of fault zones, cavities, and in situ initial stress on the 3-dimensional tunnel movement is evaluated. RÉSUMÉ: A cause des activites geophysiques et geologiques, la masses d'une roche a beaucoup d'interruptions et de condition...

... Fault Zone fracture characterization modeling mount abbot quadrangle Martel trace length Geologic stochastic modeling of fracture systems related to crustal faults Modelisation geologique stochastique des systemes de fractures au volsinaqe des failles Geo_logisch~stochastischeModelle fOrmit...