... swelling pressure, and "self-healing" capability. However, bentonite clay subjected to heating from nuclear waste decay may undergo desiccation cracking. In this study, inorganic microfiber reinforcement was evaluated as a method of reducing desiccation cracking in EBM. A restrained ring test method...

... ABSTRACT: Ground support consisting of integrated internal rock reinforcement systems and surface restraint systems are used widely for the stabilisation of excavations associated with underground excavations in mines. As mines have developed at ever increasing depths below the earth’s surface...

... ABSTRACT: Reinforcement systems are used widely for the stabilisation of excavation surfaces associated with surface and underground excavations in mines and civil engineering projects. To be effective the reinforcement must be of sufficient length to pass beyond the boundary between...

... of the engineered buffer material. This study investigated the coupled effect of glass microfiber reinforcement on the swelling and compressibility characteristics of sodium bentonite at both ambient (22°C) and elevated (50°C) temperatures. By using the one-dimensional consolidation test setup with temperature...

... ABSTRACT: This paper presents a new approach for mitigating high tower structures slope based on the foundation grouting reinforcement (FGR) mechanism. Three effects of the FGR approach were analyzed: the reinforcement provided by grouting to improve the strength of the foundation, filling...

... ABSTRACT: Jinchuan mine is the largest underground nickel mine in China, There is highly stressed surrounding rock in this mine. The problem of highly fractured roadway support in the mine is serious. In the paper, according to mechanical principle of imitation soil nail reinforcement...

... ABSTRACT : Discontinuous stress analysis models offer a powerful means to study the deformation compatibility of reinforcing elements that cross both existing and new fractures in deforming rock masses. This paper makes the case that there are considerable advantages in undertaking a series...

... Mining Research Division (SMRD) of the National Institute for Occupational Safety and Health (NIOSH) conducted systems-based ground support testing to aid in determining best practices for using reinforced shotcrete as weak rockmass surface support and to quantify the performance of support alternatives...

... studied herein is 17 m wide, 20 m high, and 43 m long. It was excavated in Chagrin shale in stages using the sequential excavation method. The permanent support system is a flexible system comprised of rock dowels and bolts of various lengths, two layers of steel fiber reinforced shotcrete, and drain...

... slope angles were designed and constructed, but this required ongoing assessment and stabilization of the newly excavated rock cuts as these got exposed. pritchard bluff Upstream Oil & Gas British Columbia stability Reservoir Characterization reinforcement Hoffman natural slope...

... as in Singbhum, Karnataka and Goa regions; Lateritic deposits and supergene enrichments associated with all the above three. Reservoir Characterization mechanical handling reservoir geomechanics stope back Rock mechanics Investigation operation stope height Wellbore Design reinforcement...

... slopes of Shiyan-Baihe Road in Hubei province, the comprehensive protection of overall strengthening and local reinforced was proposed and simulation analysis of slope treatment project was carried out by using Finite Element Method (FEM). The study shows that the original slope is stable under normal...

... not be achieving appropriate reinforcement of the rock mass around intersection corners and may contribute to roof falls. Modeled support plans are considered operationally viable and cost effective. One support plan incorporates principal author’s concepts for improved roof support around intersections. Authors...

...1. INTRODUCTION In ground support applications, the goal of rock reinforcement is to limit the amount of closure around the opening while assisting the surrounding rock to reach a new state of equilibrium. In some mining applications, this equilibrium is difficult to attain since the openings...

... strength characteristic reservoir characterization natural state mpa dam abutment weak rock mass model test foundation reinforcement deformation abutment structural plane stability rock mass reservoir geomechanics specimen geo-mechanical model test weak structural plane water...

... Abstract Nail pullout tests for the application of nail rock reinforcement were simulated using finite element analysis, and boundary conditions were representative of equivalent pullout tests. The numerical models combined a frictional nailrock contact formulation and an elastoplastic...

...) stages, with respect to the design of the load-bearing structure, (iii) description of how the input data to the design can be developed and presented during various steps in the process, and (iv) description of suitable design methodology and appropriate design methods for reinforcement for rock tunnels...

... geometry followed by limit equilibrium analyses of the kinematically-feasible cases to design slope reinforcement where necessary. Variability in the joint orientations was accounted for using a probabilistic analysis based on the measured scatter in orientation for each joint set. A fully three...

... the excavation [1]. Sedimentary roof beds start to sag, separate from each other, and interbed slip occurs (Figure 1). Fully grouted roof bolts create reinforcement by providing resistance to both the vertical and horizontal displacements of the roof beds. Resistance to vertical displacement is created from...

... Reservoir Characterization displacement rock support system remote seismic event metals & mining reinforcement rock support Upstream Oil & Gas mechanism seismic event rockburst safety support system pillar burst excavation rockburst support strainburst support element Energy demand...