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Data acquisition equipment installed in instrumentation room
Deformation around circular test shaft measured with TSR gauges as
Al Displacement trace for TSR4 around circular shaft
3d blast 4th blast 6th blast adjustable mounting head analysis anisotropy argillite backhoe bedding planes bedding TSR4 bedding TSR6 Beus Blasting history Bureau of Mines Caladay project circular and rectangular Circular test shaft Coeur d'Alene mining collar compressive strength construction d'Alene mining district data acquisition room deformation Displacement normal Displacement trace drill and blast excavation existing shaft station exponential decay FIELD MEASUREMENT field stresses FIGURE 17 figures 12 final depth FINITE-ELEMENT MODELING horizontal stress initial blast round INSTRUMENT INSTALLATION instrument locations magnitude malfunctions MEASUREMENT AND FINITE-ELEMENT MODELING OF CIRCULAR modulus of elasticity muck Osburn Fault parallel Poisson's ratio Precambrian quartzite radial RECTANGULAR SHAFT SHAPES rectangular test shaft Report of investigations required depth Rock bolting rock mass sensing anchor shaft advance shaft wall Shear stress shown in figures stress field structural support reference pipe tion Total depth trace for TSR5 transducer TSR gauges installed TSR5 TSR6 TSR8 two-dimensional elastic