... of the generated stress and available strength which depend on the mechanical behaviour of the rock mass. Moreover, the actual stress level imposed on a pillar depends also on the location of the pillars within the mine layout. These aspects cannot be properly considered by employing empirical and simplified...

... ABSTRACT: Kiruna mine, located in Northern Sweden, is well-known as a large-scale, highly technical advanced operation. The orebody is vast and the application of sublevel caving (SLC) in transverse layout is forgiving in terms of recovery. Work processes are rock-factory-like. However, over...

... not to base the design of any underground layout on only one method. An attempt should be made to use as many different available methods as possible, then from those, use the most optimal one in terms of cost and extraction ratio based on the design criteria. INTRODUCTION Numerical Modeling plays a key...

...). upstream oil & gas pillar operation shrinkage cavern calculation layout natural gas storage displacement cavity deformation china underground ga storage journal proceedings storage interlayer stability characteristic diameter simulation calculation ARMA 22 0393 Stability analysis...

... geomechanics partial pillar extraction method absolute maximum surface subsidence metals & mining strength extraction extraction stage percentage recovery layout pillar upstream oil & gas extraction system subsidence botswana international university numerical model ARMA 21 1599 Pillar...

... ABSTRACT: High-pressure fluid injection for well stimulation can induce a combination of new tensile fractures and shear activation of existing natural fractures. It is beneficial to consider uncertainty in fracture geometry when designing multi-well layouts where fracture connectivity...

... concept as it applies to the SIGMA-V (EGS Collab) geothermal energy research field site. Reservoir Characterization Upstream Oil & Gas hydraulic fracturing stimulation frash hydraulic fracture propagation international journal reservoir geomechanics flow rate experiment layout...

... sites of Northern Ontario in Canada, might exhibit closely spaced major geologic structures requiring underground layout adaptation within a much smaller footprint. Therefore, the feasibility of a two-level repository as governed by the presence of layout limiting geologic structures, was evaluated...

... Abstract: The paper describes a method to determine the extent of the fracture zone near the edges of tabular excavation layouts. The problem is expressed as the solution to a non-linear eikonal equation which is solved using a fast marching method applied to the vertices of square...

.... reservoir geomechanics relation inverse problem Reservoir Characterization Upstream Oil & Gas information knowledge Artificial Intelligence stress component situ stress tensor layout rock mass machine learning hydraulic fracturing Rock mechanics variance-covariance matrix vector...

... of feasibility study. Stability analysis with numerical modeling was thus conducted to examine each of these potential issues with various scenarios corresponding to each of the layout proposals, respectively. The modeling results predicted potential risks of failure, and provided reliable evidences...

... in the safety analysis is based on recent results of dynamic distinct element method simulations of Magnitude 6 and Magnitude 7.5 earthquakes [9]. These simulations are presented in a separate paper to this conference and are not detailed further here [10]. The consequence for the repository layout...

...1. INTRODUCTION A popular numerical procedure that can be applied to the computation of stress and displacement distributions in the vicinity of tabular mine layouts is the so-called displacement discontinuity method (DDM). This method found initial application in the analysis of coal mining...

... to South Africa, it is vital that engineers are provided with the most appropriate tools to ensure the optimum design of mine layouts and cost-effective support systems. As mining has progressed through the years, the field of rock engineering in South Africa also developed from mainly an empirical science...

... structures and ore widths in excess of 20 m have necessitated consideration of alternative mining sequence and layouts. Finite element modeling, developed as a case study to match historical conditions, reflected actual conditions quite well. Location of the stope outside of the mine?s paste backfill...

... of the boreholes would increase the ultimate RH waste capacity of WIPP. However, most previous studies only looked at the geomechanical implications of the original borehole layout [1, 2]. Some alternative layouts have been investigated, but not in detail and not in the stratigraphic location that future disposal...

... pillar strength knowledge management Artificial Intelligence Design Procedure pillar collapse formulae pillar design formulae layout pillar strength formulae strength consideration application pillar probability experimental panel coal pillar metals & mining Salamon...

... US government roof instability Morgantown Roof Stability Limestone Formation Ground Control layout excavation tectonic stress 1. BACKGROUND There are 118 operating underground stone mines listed in the Mine Safety and Health Administration s list of stone mine workings [1]. All...

... ABSTRACT: The stability of an underground limestone mine became a concern following numerous roof falls. Factors influencing roof behavior were identified and a program of investigation initiated to understand the causes of the roof falls and to develop recommendations for changes in mine layout...

... Design borehole DST Nevada wellbore integrity Drift Scale Test distinct element modeling Simulation layout las vegas reservoir geomechanics displacement thermal field rock mass borehole 156 FRACTURE data fracture Yucca Mountain deformation Rock Mechanics in the National Interest...