..., however, consisted of fresh very strong quartzite. The failure extended up the hillside for approximately 30m, and along the hillside for approximately 25m. The debris from the rock fall blocked the entire road, and overspilled into Loch Fyne (Figure 2). The dense rhododendron vegetation and the steep...

.... fragile rock ground condition overbreak closure Upstream Oil & Gas tunnel face sandstone schist Reservoir Characterization quartzite dia face collapse renewable energy limestone Himalaya tunnel rock mass shale geology gneiss phyllite lesser himalaya thrust CHALLENGES...

..., in the South by the Malwa Plateau, and in the North and East by the Indo-Gangetic plains. The region has three distinct physiographic units viz. (i) the alluvial plain on the Eastern and Western side of the ridge, (ii) a quartzitic ridge and (iii) the nearly closed alluvial basin of Chattarpur in South Delhi...

... Reservoir Characterization footwall Upstream Oil & Gas metals & mining structural geology displacement mechanism quartzite stope face VCR foundation failure closure ride station reef horizon haulage pillar pillar foundation failure intermediate depth shale seismicity...

... is unknown but is probably sub-vertical. Site investigations carried out for the foundation design of the original bridges at the interchange 81 had indicated that a dyke runs parallel to the long axis of the structure with Bridge B straddling its western contact. The quartzites to the west and east...

... in concrete mining-geological conditions. metals & mining geological structure investigation stress value measurement data structural geology korobkov ore deposit Particularity eastern deposit Reservoir Characterization deposit quartzite ferruginous quartzite rock mass rock massif...

... Upstream Oil & Gas Power Tunnel structural geology rockmass sandstone tunne 1 young himalayan rock personnel competence quartzite slate phyllite excavation roorkee tunnel reservoir geomechanics strength Himalayan region tunnel closure Himalaya thrust expansion support pressure...

... that it is always operative; Reservoir Characterization kol dam hydro electric project dolomite limestone India Upstream Oil & Gas abutment goo-technical aspect tunnel quartzite Power House power intake mw kol dam hydro shali formation lower himalaya seepage intrusion Rock Mechanics...

...- ther commenced in June, 1976 when belomain SPillway was about 6 m W its crest level. 2 REGIONAL GEOLOGY The highly folded rock formations in the area comprising phyllites, slates, mica-schists and quartZites belong to the Pre-Cambrian age.The geological structures have influen- ced the topography...

... determined on laboratory specimens which are flawlesa. On the other hand in natural condition quartzitee are travereed by discontinu- ity planes and contain shale intercala- tions. Therefore in the shear resistance offered by a combined quartzite-shale inter layered system the contribution of quartzite...

... located at the central. part and another at the upstream end of the dam. Innumerable fractures and joints cut through the entire foundation consisting of quartzite and phyllite. The central fault Which runs little askew to the dam axis containing clay gouge and crushed rocks was treated by a concrete plug...