... rocks of claystone, siltstone and sandstone from southern alberta, are presented and evaluated in this paper. These observations indicate that foundation rock discontinuities and shear zones experience considerable deformation and concurrent long term behavior, in response to excavations and reservoir...

... Abstract The long-term slaking behavior of clay-bearing rocks in the field can be quite different than the short-term slaking behavior in the laboratory. To assess this difference, 12 replicate samples of each of 20 clay-bearing rocks, including 5 claystones, 5 mudstones, 5 siltstones, and 5...

... Upstream Oil & Gas Siltstone internal surface reservoir geomechanics cavern groundwater longyou cavern entrance structural geology full water occupation rock cavern pelitic siltstone Reservoir Characterization Engineering Rock mechanics investigation integrity typical cross...

... describes experiences during the construction of reinforcements in the paleogene flysch deposits during construction of Adriatic motorway near city of Rijeka, Croatia. Flysch deposits in this area mainly consist of siltstones and marl, and rarely with layers of sand. Experiences during the constructions...

... mass deformations are lesser for 3-D analysis as compared to Quasi-3-D analysis that is in agreement with results of Dahawan's studies. Reservoir Characterization extensometer cavern reservoir geomechanics displacement Siltstone Upstream Oil & Gas horizontal displacement...

..., H: 10m lies in the Shemshak and Elika Formation. These formations consist of shaly, slightly sandy siltstone, sandstone and thin layered limestone and intrusions of igneous rock such as spilitic basalt partially bedding parallel orientated. The whole formation is folded and forms the southern flank...

... reservoir geomechanics Siltstone sandstone structural geology Earthquake discontinuity Upstream Oil & Gas Sasaki consideration Reservoir Characterization strength rock slope stability MPa underground excavation investigation total stress mechanical property effective stress...

... assessment techniques based on rock mass classification and back analyses. ‘Melbourne Mudstone’ is a generic name used to describe the open folded and faulted sedimentary deposits comprising predominantly siltstones with some fine grained sandstones and rare mudstones of Silurian and early Devonian age...

.... 1993). roof displacement cavern Claystone extensometer displacement transformer cavern Reservoir Characterization load cell Siltstone lahrneyer int installation knowledge management Moshanir lahmeyer int masjed-soleiman power station cavern powerhouse cavern excavation...

... results, marble and sandstone are Class I rocks. Granite, andesite, tuff, siltstone, quartzite and serpentinite are Class II rocks. The failure modes observed include spalling, axial splitting and shear failure along filling material. The growth, interaction and coalescence of cracks can be clearly...

... chemistry drilling fluid selection and formulation drilling fluids and materials effective viscosity mechanical property moduli creep rate roof rock shale-laminated siltstone compressive strength stiffness Siltstone experiment overburden rock high temperature Wellbore Design strength...

... ABSTRACT: Slaking and swelling behavior of siltstones at the Lam Ta Khong Pumped Storage Project was studied. The immersion tests and controlled drying and slow wetting tests indicated that severe slaking occurred by wetting of the siltstone in unsaturated states. The behavior was principally...

..., and in some areas is underlain by reserves of lignite, coal, oil or gas. This paper summarizes the results of field and laboratory investigations to describe and , characterise these rock materials (fine sandstones, siltstones, clayey siltstones and silty claystones) in engineering terms, and to classify...

... ABSTRACT: This paper presents an interesting back- analysis study of the unexpected failure of an artificial slope cut in a massive, clay-cemented, weak siltstone. Post-failure site investigation was made almost immediately and several sets of joints not recognised before designing the slope...

... analysis the stability factor in static and seismic conditions and permanent displacements on the potential sliding plane. Upstream Oil & Gas cohesion Reservoir Characterization Siltstone composition structural geology seismic condition strength parameter plane stability Dubrovnik...

... Pier Siltstone bukit timah granite Jurong Formation sandstone residual soil compression Shaft friction of drilled piers in weathered rocks Friction Ie long de la paroi de pieux fores dans des roches alterees Mantelreibung an Bohrpfahlen im verwitterten Fels M.F.CHANG, Nanyang Technological...

... to the Caledonian mountain chain as well as autochthonous Cambrian sediments (siltstone) and Precambrian basement rocks (quartzite). In both tunnels, the high rock stresses have caused fracturing of the rock. Most of the fractures are more or less parallel to the excavation face, and thus perpendicular...

... SYNOPSIS: The preliminary results of the geomechanics investigations at the Raupunga damsite on the proposed Mohaka River hydrodevelopment are presented. The geology of the site comprises a marine sedimentary sequence of soft, low strength siltstone and very low strength sandstone of Tertiary...

... geology logged during excavation (Figures 1, 2, 3). Upstream Oil & Gas Reservoir Characterization knowledge management frequency structural geology mudstone geotechnical factor Rebound Number Schmidt hammer rebound number discontinuity unit drive time full face Siltstone sandstone...

... SUMMARY: Erosion of a cut in stratified sandstone and siltstone over a ten year period resulted in a surface profile conforming to the zero stress contour calculated in the initial excavation. This paper shows stress contours calculated using a two-dimensional finite-element analysis...