... of the model considering its benefits for the modelling of HSSR material. structural geology calibration axial deformation application figure 8 compression kpa figure shotcrete simulation numerical simulation residual strength result stress-strain relation reservoir characterization...

... physical, mineralogical and mechanical data to better support geotechnical projects. metals & mining shotcrete formula upstream oil & gas barricade reservoir characterization strength shotcrete application stope equation stability application paste backfill compressive strength...

... Abstract In this paper, formulas are proposed for rational and realistic sizing of barricades made of development waste rock as cemented paste backfill retaining structures in underground mining operations. The formulas, which take into account the application or not of shotcrete, allows...

... Abstract The shotcrete at Cuiabá mine consists of a mixture of cement, aggregates, water, fibers and admixtures. The fibers are crucial to this support since they act in the post-cracking stage, maintaining its integrity and some load-carrying capability. Actually, the Cuiabá mine is subject...

... during a seismic event. amplification fracture instrumented d-bolt mpbx upstream oil & gas geophone shotcrete rock mechanic intersection lkab metals & mining displacement deformation frequency anchor symposium reservoir characterization excavation sensor borehole...

... and decreases the effect of interrelation between the blocks. This type of structures presents complex stability conditions for carrying out excavations. tunnel shotcrete discontinuity figure 5 construction gallery reservoir characterization aqueduct tunnel stability figure 2 upstream oil...

... to the stopes. This damage can impact the development rate as rehabilitation needs to be executed to guarantee the staff's safety. In the deepest areas, part of level 18 and level 19, the shotcrete is used in operational cycle of the ramps development: infracycle and incycle. It means that the shotcrete occurs...

... Abstract The use of unlined/shotcrete lined pressure tunnels and shafts are very cost effective solutions for the hydropower project and therefore are being implemented worldwide. However, the ground conditions at the area of concern should be favorable regarding both minimum principal stress...

... Abstract Fiber reinforced shotcrete has been used as primary surface rock support, providing the necessary post-crack performance and strain capacity. Both polypropylene and steel fibers have been added on the mix composition in order to achieve the necessary deformation capacity of the fiber...

... law with softening behaviour and an oriented criterion integrated in the continuum model. As a result, a flexible support is advised, based on a high density bolt system and a thin lay of shotcrete. This methodology has been developed in the case of Gilboa in Israel, except the schistosity which has...

... extend towards the ground ahead of the tunnel face. Propagation of this zone toward the ground surface results in generation of sinkholes. Reservoir Characterization rock bolt shotcrete 13th international congress stability practical method reservoir geomechanics numerical simulation...

...RAPID FLEXURAL TOUGHNESS DEVELOPMENT DRY-MIX SHOTCRETE FOR MINING APPLICATIONS * N. Ginouse and S. Reny King Packaged Materials 3825 rue Alfred Laliberté Boisbriand, QC, J7H 1P7, Canada (*Corresponding author: nginouse@KPMIndustries.com) Innovations in Applied and Theoretical Rock Mechanics Editors...

... Reservoir Characterization classification subclass excavation Upstream Oil & Gas shotcrete RMR value ground transportation Bieniawski rmr new guideline application construction Montreal reservoir geomechanics 13th international congress excavation method tunnel excavation...

... hereinbefore, the adopted solution involved ore exploitation with complete ensuring of excavation stability, thus forming an extremely large underground opening. The excavation and supporting were performed according to the NATM principles along with applying shotcrete, 9-25 m long cables, and horizontal...

... of 10 m) is commonly used for tunnel applications in softer rock formations. This is implied in the updated Q-chart, where the dimensioning of rock support by using Reinforced Ribs of Shotcrete (RRS) comprises the use of fiber reinforced shotcrete, S(fr), rock bolts and shotcreted beams reinforced...

... gauges installed in tangential and longitudinal direction in the shotcrete support to measure the strains occurring in the lining during excavation Plate load tests parallel and perpendicular to the fault orientation to identify the anisotropic deformation characteristics In-situ direct shear tests...

... with the tendons. The blocky ground conditions at No 20 Shaft and micro-fracturing at No 16 Shaft are typical examples. One of the most commonly-used areal support medium is shotcrete. It is generally accepted that shotcrete functions by bonding together the smaller rock blocks present on an exca- vation perimeter...

... consequence. Various approaches for a ductile support system appropriate for such geotechnical conditions have been proposed, developed and applied. The ductility of a shotcrete lining is usually ensured by integrating yielding elements. In order to prevent overloading of the young shotcrete, the elements...

... ABSTRACT This paper consists of two parts, the first part includes laboratory investigations on shotcrete samples reinforced with various percentages of steel fibers, this tests includes uniaxial compression, direct tension and flextural test on specimens. In the second part, using...

... construction project workflow Polywork cavern lidar data application Thickness shotcrete NGI surface model classification information customization scanner tunnel evaluation Diederich cross section Harmonising Rock Engineering and the Environment Qian & Zhou (eds) © 2012 Taylor & Francis...