..., Seismic, Lab function of total porosity, and the best equation for angle Properties K Bulk modulus MPa test of internal friction is a function of total porosity and shale (Dynamic & Static) MPa In-situ MPa Lab test, Well logs volume. The established empirical equations for static Stress G Shear modulus...

... based on the knowledge of the dynamic Young's Modulus (E dyn ). Nowadays, Edyn is estimated from the shear and compressional velocities and bulk density, which in many cases may not be available. This study introduces an empirical equation developed based on an optimized artificial neural networks (ANN...

... tests, flat jack tests, borehole jacking and pressure chamber tests (Bieniawski, 1978, Hoek and Diederichs, 2006, Zhang, 2017) while the indirect methods basically consist of empirical equations obtained through statistical analysis of field data. However, the in-situ tests are often difficult, time...

... & Gas constant parameter loading microtremor urban noise finite element method displacement monismith selig Reservoir Characterization Tehran empirical equation kPa gravel equation case study seismogram deformation 1. INTRODUCTION Slope stability analysis has been always one...

... and economic constraints. Pillar design process involves estimating the pillar stress and the pillar strength and sizing the pillar until an acceptable margin of safety (ratio of pillar strength to pillar stress) is attained. metals & mining pillar strength empirical equation Reservoir...

... show a satisfactory agreement with the general Obert and Duvall empirical equation. A major limitation of using Obert and Duvall empirical equation was revealed and a methodology was proposed to address this shortcoming. In conclusion, an empirical pillar strength equation has been proposed to evaluate...

... not be copied. The abstract must contain conspicuous acknowledgement of where and by whom the paper was presented. ABSTRACT: Barton suggested 1% displacement as a rule-of-thumb for peak shear displacement of fractures ( peak=0.01L). In addition, he introduced an empirical equation for peak based on JRC...

...AN EMPIRICAL EQUATION FOR DRILL PERFORMANCE PREDICTION Hussain Rabia, B.Sc., Research Student, Department of Mining and Mineral Sciences Norman Brook, B.Sc., Ph.D., Senior Lecturer in the Department of Mining and Mineral Sciences 103 ABSTRACT The results of research into the impact strength of rock...