... Technology in Urban Rail Transit, Beijing, China c China Road and Bridge Corporation, Beijing, China * [email protected] Abstract Aiming at fully considering the influence of bolt length on stability of flysch layered slope, safety factors and failure modes of layered slope with different dip angles...

... of finite element analysis method, the safety factor is obtained by the strength reduction method. The calculation results are discussed in chapter 3. 2.3.2 Simulation of layered slope with joint considering random field. The layered rock slope has the following characteristics: the intact rock block...

... sand fill and left out pillars act as a good support measures. reservoir geomechanics asian rock mechanics symposium arms8 metals & mining post pillar safety factor Orebody Reservoir Characterization rib pillar international case study rock mass operation ore body extremity...

.... Also during maintenance, a monitoring/ inspection/ repair system with higher-precision safety factor is required. The dam anchor is the typical structure reinforcement anchor. Generally, the risk level of the structure reinforcement anchor is higher than that of the slope stability anchor, as shown...

... runoff model kashiwayanagi october 2014 rainfall intensity slope stability analysis slope failure DEM rainfall safety factor asian rock mechanics symposium arms8 mesh basin landslide 8th Asian Rock Mechanics Symposium ARMS8 14-16 October 2014, Sapporo, Japan Assessing rainfall induced...

.... Differences in results indicate that the planar assumption of curved-shape discontinuities leads to significant error and the curvature parameter should be consideredin analyses. structural geology arc angle discontinuity safety factor cosine component Upstream Oil & Gas curvature parameter...

... platform island port industrial zone water management water level layered rolling compaction coefficient fill cofferdam safety factor Fluid Dynamics platform earth-rock fill cofferdam Rockfill numerical model Strength Reduction Method cross section Engineering construction technology...

... axis have been considered. Safety factor for different degree was determined. With attention to stability, axial force and moment, three type of reinforcement system for all degree of anisotropy with ubiquitous and also Mohr Columbus models have been designed Keywords: Anisotropy, Stability,Tunnel...

... failure is based on the limit equilibrium approach and the slope stability is then ascertained by determining the force necessary for equilibrium of the block at the toe of the slope. Existencesomesimplifications in this process affects the safety factor, indeed. In this study a stability analysis method...

... pressure wet condition water pressure slip surface dump material Upstream Oil & Gas critical slip surface water condition waste dump material slope angle Chakraborty moisture content safety factor dump slope wet water condition side slope Stability Analysis of a Mine Waste Dump Over...

... tunnel portal laboratory excavation water management stability analysis blocky safety factor stability rock mass University moshampa tunnel supply tunnel stabilization Stability Analysis of Block Toppling Failures in Tunnels Portals of Moshampa Dam in Iran Tahoura Akbarpour a, Mehdi...

... numerical analysis safety factor RMR grade Munro equation ABSTRACT Pillar design is essential in mining practice, to achieve safe economic potential of an orebody. As a preliminary research on the optimized design of pillar structures, numerical analysis has been carried out to estimate pillar...

... Upstream Oil & Gas pillar failure spatial reasoning strength metals & mining Engineering pillar progressive collapse safety factor determination Simulation instability pillar load pillar Artificial Intelligence Voronoi diagram calculation height ratio mined-out area...

... safety factor analysis should be considered beforehand. In this study, the three equations, a normal equation from large explosion experiment, CONWEP (Convention Weapons Effects Program) overpressure equation depending on distance from an explosion and DDESB (Department of Defense Explosives Safety Board...

... Reservoir Characterization Wellbore Design metals & mining Upstream Oil & Gas US government powerhouse cavern volcanic breccia stability configuration 1 final configuration reservoir geomechanics cavern contour safety factor Fuel Research configuration 3 crown level...

... sequences, the ground control and extraction ratio are sub-optimal. In such geometry, pillars around the panel center have lower safety factors while pillars around the barrier pillars have higher safety factors. To overcome the disadvantage of lower extraction ratio and reduced pillar and floor safety...

... knowledge management Engineering tension crack Mining Engineering stability metals & mining geological section safety factor failure plane predict support system University determination support system planar failure slope stability equation Upstream Oil & Gas Slope...

... & mining post pillar crown pillar stope span reservoir geomechanics stope back contour safety factor Reservoir Characterization stope stability analysis pillar principal stress Fill Stope Parameter support system stability Orebody stope height ISRM International Symposium 2010 and 6 th...

... modelling, estimating the extent of a roof failure zone and respective rock load and finally linking with adequate support-safety factor. The approach is site-tested in many coal mines. Two representative case studies (moderate and high depths) are briefly cited, where suggested patterns of bolting were...

.... The safety factors of this section are 1.37 and 0.84 for static and pseudo-static situation respectively. Fig. 4. Calculated safety factor for static situation. Fig. 5. Safety factor for pseudo-static situation. 6- NUMERICAL ANALYSIS METHOD Numerical methods are efficient techniques to assess and judge...