..., the stability number with water conditions is defined by N=AxBxCxQ′xJw. A database of 25 case histories is collected and analyzed for a mine with the presence of underground water with software MineRoc®. Stability boundaries are proposed based on the Equivalent Linear Overbreak/Slough (ELOS). The impact...

... of the databases of more than 640 retreat mining case histories from various U.S. coal mines. In this study, stress measurements from U.S. and Australian coal mines were back analyzed using the square decay stress distribution method, and the abutment angles are investigated. The results of the analyses indicated...

... strong granitic rock. Fluid Dynamics knowledge management performance test Case History Upstream Oil & Gas resin cartridge contractor Symposium grouted rock anchor borehole CGRA cartridge rock anchor flow in porous media Transmission Line RGRA Anchor resin grouted rock anchor...

... to numerical design techniques based on the empirical m and s failure criteria. The Stability Graph and Span design techniques have evolved, primarily through changes to the design lines used to predict opening stability and dilution based on hundreds of case histories. The m and s based design methods have...

... is presented, followed by a discussion of the main areas and tools available for application to rock engineering. Two case histories are presented in order to illustrate the proposed workflow. The first case history describes the evaluation of subsurface conditions for the purpose of an excavation...

... ABSTRACT: A rock mass stability analysis method coupling block theory and three-dimensional discontinuous deformation analysis (3D DDA) has been developed. In this paper, two case histories are presented in which the coupled method developed was used to analyze the stability of underground...

... ABSTRACT: A design method coupling block theory and three-dimensional discontinuous deformation analysis (3D DDA) has been developed. In this paper, two field case histories involving rock slopes are used to test the method. The stability analysis of and stabilization design for rock slopes...

... to rockburst damage. The index was calibrated using 80 case histories and 250 individual incidences of rockburst damage from underground, hard rock, metalliferous mines in Australia and Canada and was subjected to rigorous analysis. Analysis of the data indicated that, given there is a significant dynamic load...

... Montana Case History Stability Graph discontinuity stability geometry failure trajectory stope geometry reef probability RockMechanicsin theNationalInterest,Elsworth7, 7nucc&i Heasley(eds), ¸ 2001 Swets& ZeitlingeLr isse,ISBN90 2651 827 7 Probabilistiacssessmeonftsub...

... washington national cathedral Case History differential settlement footing inclination string potentiometer Pier elevation construction stone structure settlement foundation Rock Mechanics in the National Interest, Elsworth, Tinucci & Heasley (eds), © 2001 Swets & Zeit/Inger Usse, ISBN 90 2651...

... the pillars are left behind as permanent support. Reservoir Characterization metals & mining reservoir geomechanics pillar strength strength dimension formula unfailed case calculation strength formula Salamon Case History layout survival probability height ratio safety factor...

... tunnels in which Opalinus Clayshale was encountered were studied in a number of case histories, while on the other hand, significant state-of-the-art research was and is being conducted for the tunnels which are under construction or planned (EPFL, 1990; Bellwald, 1991, Aristorenas, 1992; NAGRA, 1988...

... ABSTRACT: Several case histories are reviewed describing the analysis, treatment, and behavior of rock slopes related to the construction of dam and hydroelectric projects. The need to understand the slope geology and geometry is emphasized. The practical and successful application of rock...

... ABSTRACT: This paper summarizes some case histories indicating the unpredictable nature of groundwater inflow into manels and the important geotechnical and geologic parameters to identify and bracket for more accurate prediction. Methods that have been used to estimate groundwater inflows...

.... A database containing case histories to be accessed and examined and an expert system for selection of appropriate simulation models for design analysis are also contained in the system. The function of each component is described and demonstrated in this paper. INTRODUCTION The design of underground...

... by well activities can be documented throughout the United States and Canada. Based on these case histories, it is evident that, owing to preexisting stress conditions in the upper crust, certain areas tend to have higher probabilities of exhibiting such induced seismicity. INTRODUCTION The phenomena...

... for design of pillars in hard rock mines in Scandinavia and the rest of the world. These facts illustrate the need to direct more research efforts towards the study and evaluation of case histories in order to define more reliable design parameters and to get a better understanding of the mechanisms...

... finite element studies. The distinct element method is selected for analysis of cavability because this method treats the rock mass as an assemblage of rock blocks which may interact individually. The results of the analyses are compared to a documented case history which involved a groundfall of 80,000...

..., and provides equations and charts that can be used to directly calculate the modulus of deformation from field measurements. Case histories are presented and emphasize the differences in magnitude between modulus values obtained from laboratory specimens, empirical methods, and the convergence method described...

... ABSTRACT ABSTRACT This paper presents the case history of a monitored opening 4.5 m high by 42 m wide in a deep potash mine. Deformations and stresses were measured in the roof and a wall. From the monitoring data, the geometry of the active opening and viscoplastic zone was determined...