... in this conception is shown as the first level of a hierarchical system and the rock mass at the opening scale corresponds with the second one. Upstream Oil & Gas calculation Makarov boundary radial length failure zone zonal character rock mass high-stress rock mass condition disintegration...

... support design Upstream Oil & Gas deformation gap rock support safety factor Reservoir Characterization strength failure zone eurock 2012 rock condition metals & mining rock mass deformation support system rock failure fracture displacement rock bolt stress rock mass excavation...

... of wide failure zones in the walls. Other scenarios, such as an unfavourably inclined discontinuity bisecting the central pillar or the squeezing-in of a block at the cav- ern wall were disregarded on the grounds of the joint pattern and low joint persistence predicted. Potentially mobile key blocks...

... behaviour of the tunnel cross section and the primary stress orientations are presented in this paper. displacement radial displacement cross section plane cross section Reservoir Characterization calculation reservoir geomechanics orientation panet failure zone vector stress situation...

... Ganchenko The COli/POllY "ALROSA ". Mirny. Russia ABSTRACT: Numerical simulation is performed for the changes of stress field at consecutive extraction of a diamond ore deposit, The features of stress distribution around openings are examined. Failure zones ofrock mass are determined With using of Coulomb...

... to progress to greater depth, rendering the current mining method uneconomic and unsafe. Numerical modelling techniques were used to evaluate existing and proposed mining methods. Back-analysis using observations of stope hanging- and sidewall failure zones, and vibrating wire stressmeter instrumentation data...

... failure zone experiment flaw interaction deformation propagation Eurock '96, Barla (ed 1996 Balkema, Rotterdam. ISBN 90 5410843 6 Effective growth rules for macro fracture simulation in brittle rock under compression Simulation du developpernent des macro-fractures dans des roches fragiles sous...

... analytical investigation electrical resistance fracture Upstream Oil & Gas failure zone investigation excavation stress-strain state Reservoir Characterization strength underground mining deformation post-peak deformation extension rock mass deposit Eurock '93, Ribeiro e Sousa...