... the force-displacement response of an anchored mesh panel to an out-of-plane load, extending the experimental standard punch test characteristic values (ISO 17745, ISO 17746, UNI 11437) to field conditions. Discrete element simulations are used to provide analytical relations that account for the effect...

... wellbore design reservoir geomechanics geological subdiscipline rock engineering theory specification artificial intelligence metals & mining relation brittleness operational parameter machine learning practice iop publishing iop conf environmental science 833 raise boring machine...

... Abstract The objective of this study is the determination of the various stages of deformation of brecciated marbles, under uniaxial compression, and the application of regression techniques, to investigate the relations of these stages, with physical, dynamical, and mechanical properties...

... iop publishing iop conf variation environmental science 833 unconfined strength int relation diameter granite Mechanics and Rock Engineering, from Theory to Practice IOP Publishing IOP Conf. Series: Earth and Environmental Science 833 (2021) 012023 doi:10.1088/1755-1315/833/1/012023 Analysis...

... rock brittleness indices (BI 2 , BI 3 , BI 4 ), different combination of UCS and BTS. Further, these indices are compared with both BI o and BI 1 as well as each other. It is found that the BI o and BI 1 have a significant relations (ranging of determination coefficients (r 2 ) from 0.69 to 0.88...

... the central borehole until the specimens failed by tensile fracturing. Numerical modeling incorporating fracture mechanics was used to obtain a relation between tensile fracture growth and injection pressure. The calculated injection pressure at specimen breakdown is only depending on the fracture toughness...

... mechanical models (mixture model, micro-structure model) which are assumed from the result. Finally, Authors propose the empirical formula related to homogenized physical properties of the improved body. 1 INTRODUCTION A field experiment was performed on a ground improvement pile made of heterogeneous...

... failure criterion relation original criterion rock anisotropy criterion anisotropy Tsiambao extension Saroglou Bagheripour Hoek ABSTRACT: Rock failure criteria were used to predict rock strength and to characterize deformation behavior of rock mass or intact rock under different loading...

... and Jaeger et al. 2007 etc.). The results of studies have shown that one of the main difficulties is connected with investigating hard rock which UCS values change within the range from 50 to 300 MPa (Turchaninov et al. 1967). This is related to the fact that to obtain reliable data we have to use test...

... applied, which enabled to investigate the mutual relations between parameters of the excavation process determined by application of various methods. Acquired results enabled to complement and specify the results of conventional geological, engineering-geological hydrogeological and geotechnical survey...

... intersections (see review in Kachanov (1993)). In tensile conditions, recent advances in effective elastic media improved the relation between the fracture density and the Young modulus of fractured rock (Le Goc et al. 2014). The solution writes as: complex reservoir reservoir geomechanics DFN model...

... the Finite Element Program will show the extension of the plasticizing zone around excavation. Thanks to the easy preparation of the models, this methodology enables us of making decision related to the preliminary design, knowing as well the previewed deformations. 1 INTRODUCTION In this article is exposed...

... dependence of squared velocity which is related to the elastic modu- lus of medium. The crack tensor describes fracturing of the rock mass with definite orientation of cracks. It takes into account both geometry and orientation of cracks. The zero-rank crack tensor describes the density of cracks...

... not be as representative as the obtained in the other two formations. structural geology strength strain gauge Upstream Oil & Gas natural water content laboratory relation water content mean value FMAM deformability specific weight strata Reservoir Characterization longitudinal anisotropic rock...

... under 80 centigrade. Figure 4. The comparison between the Burgers model and the experimental curves under 100 centigrade. Figure 5. The relation between temperature and axial stresses. Figure 6. The relation between temperature and exponential strain rate. from the primary creep phase to the secondary...

..., such as hyperbaric operations (Rostami et al., 2012). Reservoir Characterization relation abrasivity measure co 320 abr 0 Upstream Oil & Gas Rostami characteristic metal blade geotechnical material abrasiveness prediction excavation ABR pf 880 classification barcelona area thuro...

...1. Rock properties and testing methods Rock Engineering and Rock Mechanics: Structures in and on Rock Masses Alejano, Perucho, Olalla & Jiménez (Eds) © 2014 Taylor & Francis Group, London, 978-1-138-00149-7 Experimentally-based relation between dynamic and static elastic moduli of various...

... environment. This paper introduced the n values of various rocks and analyzed the relation of the n value to the loading condition, testing environment and other mechanical properties. The n values were almost constant in unconfined various loading conditions if rock type and testing environment were same...

... stress Reservoir Characterization mechanical loading vertical drill hole cohesive rock effective stress Upstream Oil & Gas pore porosity variation chart apparent value relation normal stress Terzaghi model drill hole cohesive discontinuous rock Rock Mechanics for Resources, Energy...

... tensor dynamic elastic moduli potential direction elastic moduli orientation quarry crack tensor elastic property relation anisotropy wave velocity dolomite wave propagation azimuth distribution Rock Mechanics for Resources, Energy and Environment Kwas´niewski & ydz ba (eds) © 2013...