... austria government discontinuity engelswand outcrop riscan geologist europe government rock engineering orientation geology artificial intelligence practice iop publishing iop conf shapemetrix uav stereographic projection united states government geological subdiscipline...

... Abstract The article describes an innovative survey methodology through the use of optical survey camera OPTV (Borehole Digital Optical Televiewer). This camera allows us to record the borehole wall colour image at 360° and to keep the orientation with respect to the North. Through the use...

...-slope environmental science 833 caribbean orientation classification theory area 1 university Mechanics and Rock Engineering, from Theory to Practice IOP Publishing IOP Conf. Series: Earth and Environmental Science 833 (2021) 012046 doi:10.1088/1755-1315/833/1/012046 Classification of natural...

... rock masses is investigated through plate-loading tests, more exhaustive results are provided if the measures are carried out in oriented boreholes, parallel and perpendicular to the principal deformability axis. In this case the proper elastic model accounts for anisotropy [30]. upstream oil...

... and quantitatively analyse the different structural types, and to optimize the scanline method for a specific geological setting to gain comprehensive information with regard to fracture permeability and rock mass behaviour. The structural types are described in terms of discontinuity orientation and density, rock...

... directionally dependent strength anisotropy which shifts with compressional confinement exceeding 10 MPa. Furthermore, the significant variability of intact strength data of up to 48 MPa for the same loading orientation can be constrained if the mineralogical composition and degree of mineral segregation...

... position at the Earth’s surface. Each of these processes is likely to result in the formation of a fracture set whose orientation and type (shear or extensional) will be determined by the stress field acting at the time. Crucially, the different types are likely to possess different mechanical properties...

... Abstract Characterisation of a rock mass requires data from the intact rock along with the discontinuities. Assuming that the discontinuities are planar, its characterisation requires its number and orientation. This leads to the analysis of the normal spacing, the persistence...

... varies considerably from applications and project stage. For an assessment of the overall rock mass quality, for example, the techniques of scanline and scan window on two-dimensional rock exposures can sample the data such as orientation, spacing and trace length. The estimated fracture parameters...

... in the specimens were microscopically observed. The geometry of each fracture was quantified by its length, opening and orientation. The results show that noticeable fracture propagation occurs mainly at the stress level above 80% of the Uniaxial Compressive Strength (UCS). In general, intergranular cracks...

... have various shapes depending on the number and orientation of the discontinuities which form them. Therefore, the calculation of rock block volume is not trivial, and many attempts have been made to propose simple analytical methods. One of the most commonly used is Palmstrøm’s formula [1...

... rock type metals & mining geologist structural geology practice iop publishing iop conf geological subdiscipline reservoir geomechanics environmental science 833 shaft seismicity rock engineering orientation assessment discontinuity rock mechanic stability theory mechanism pillar...

... environmental science 833 orientation plate tectonics discontinuity geological subdiscipline sector 8 strength theory cloud mudurnu valley discontinuous limestone Mechanics and Rock Engineering, from Theory to Practice IOP Publishing IOP Conf. Series: Earth and Environmental Science 833 (2021...

... strength, the orientation of laminations at impact, and the impact energy. An experimental apparatus and procedure were developed so that the discs, 96mm in diameter and 25mm thick, could be impacted neatly on their circumferential edge, at a selected lamination impact angle, and subject to filming...

... mining institute ksc ra metals & mining europe government practice iop publishing iop conf orientation geological subdiscipline modeling rock engineering theory variant Mechanics and Rock Engineering, from Theory to Practice IOP Publishing IOP Conf. Series: Earth and Environmental Science...

... france government metals & mining foundation spherical 28 grouted rockbolt europe government environmental science 833 initiation theory geologist rockbolt rock engineering mechanism corrosion geology practice iop publishing iop conf type propagation orientation...

... operator. The main rock mass characteristics considered to predict fragmentation from rock blasting (i.e. discontinuities' orientation and spacing) are obtained from each of these tools. Discontinuities' spacing has been assessed in photogrammetry models along a dense set of scanlines oriented in four...

... of the deposition hole would fulfil the plane-strain conditions. 3D numerical stress analysis using Itasca's FLAC3D code was conducted to evaluate compliance of the stresses around the deposition hole with the Kirsch solution, varying Poisson's ratio and the stress field orientation relative to the deposition...

... of consolidated-undrained triaxial tests (CU) performed under low confining pressure (50, 150 and 300 kPa) to several sets of core specimens carved with different orientation of the tectonic fabric. We analyse strain-stress relationships of each test, as well as failure modes, obtaining a brittle behaviour...

... for semi-automatic measurements of fracture orientations. In addition, a digital twin of the tunnel section with photorealistic surface texture is created and implemented into virtual reality (VR) system – Virtual Underground Training Environment (VUTE) developed for training of rock mass characterisation...