... ABSTRACT: This paper details back analysis conducted at two mines with the purpose of informing exposure management procedures to manage seismic risk. The analysis was intended to help each mine determine which blasts should have an exclusion, what the area of exclusion should be and when re...

... ABSTRACT: The Vajont landslide is an outstanding case history for the study and back analysis of complex instability mechanisms involved in sliding along planes of weakness in rocks. It moved a 250 m thick mass over a distance of about 500 meters horizontally, reaching velocities of 20 – 25 m...

... ABSTRACT: The present study proposes a back analysis method for estimating the geotechnical parameters of the surrounding rock mass in tunneling. This method takes a direct search approach based on a successive response surface method, where the size of the region of interest is adjusted...

.... US government rockfall mechanism hydraulic fracturing investigation strength main headscarp mountain water table fracture Reservoir Characterization tensile failure Upstream Oil & Gas pillar mountain landslide back analysis bedding slide area headscarp failure mechanism Kodiak...

... orientation Siltstone back analysis overbreak notch Upstream Oil & Gas Queenston Formation strain contour excavation stiffness reservoir geomechanics strength prediction shaft tunnel NTP Diederich Ontario maximum shear strain ARMA 13-407 Queenston Formation: Tunnel back analysis...

... rock mass. Reservoir Characterization side wall splitting failure zone specimen hydraulic fracturing displacement borehole underground cavern mechanical parameter downstream side wall Engineering back analysis powerhouse rock mass Upstream Oil & Gas transformer chamber...

... the in situ loading of the FRS liner for a better understanding of its actual performance. In this paper, the to date results of the ASTM 1550 field test program along with a back analysis based on measured convergence to determine the loading of the FRS initial lining will be presented. A brief discussion...

... reservoir geomechanics Upstream Oil & Gas Martin displacement strength Harrison back analysis rock mass crowder Rock Mech Wellbore Design criterion heterogeneity coulson post-peak parameter criteria degradation Rock mechanics Fang Kaiser pillar fracture bawden ARMA 10- 530 Rock...

... ABSTRACT: Back analysis of open stope performance is essential in the dilution control process, as an improved understanding of mechanisms allows one to check the validity of any assumptions and refine geotechnical parameters used in the design process. This paper describe the results...

... mass classification; c) large scale tests; d) back analysis of failures and translations. In addition, the empirical failure criterion, which is often used in combination with rock mass classification, could be an alternative approach. Fig.1. Effect of scale on rock strength and possible mechanism...

... ressur e head 82 0 m 80 0 m 76 0 m 59 0 m Figure 1: The longitudinal section of the Feldsee project ARMA 08-126 Back-analysis of elastic properties of the ground using data from a large- scale plate load test Radon i , N., Grossauer, K. and Schubert, W. Institute for Rock Mechanics and Tunnelling, Graz...

... Reservoir Characterization Upstream Oil & Gas accuracy displacement variation modeling metals & mining displacement calibration final value knowledge management Engineering slope parameter cross section back analysis stability slope stability flac software operation...

... laboratory examination, we conducted triaxial consolidated undrained shear tests ("CU"-tests) of fifteen intact samples and nine compressibility and permeability oedometric tests. Reservoir Characterization strength characteristic Upstream Oil & Gas back analysis Engineering excavation soft...

... an iterative back analysis parametric study, the post-peak parameters are adjusted until calculated displacements of the rock mass are comparable to those observed from the instrumentation at the same location over the same mining steps. Analysis of two regions at a case study mine, indicates that this rock...

... the reliability of current modeling strategies. stability assessment hour velocity prediction slope failure key question Rock mechanics pit slope failure stability displacement pre-collapse slide velocity Zavodni metals & mining back analysis critical slide velocity failure stage slide...

... transportation back analysis application rock mass bench excavation deformation extensometer pattern 1 local geological condition limitation tunnel Hock Mechanics Contributions and Challenges, Hustrulid & Johnson (eds) ¸ 1990Balkema, Rotterdam. ISBN906191 1230 The application and limitation...

... to predict ripper performance. It is found that ripping test results agree with strength parameters determined from back analysis of slopes. Bimses in sampling and laboratory testing caused by the presence of the large size fractions are believed to cause a wide range in the values determined for shear...

... Upstream Oil & Gas back analysis strength cohesion knowledge management cambrian quartzite face stability discontinuity seepage stability quarry face stability planar south west face plane shear resistance Case History geometry England A CASE HISTORY OF QO RRY FACE...