Abstract: Methods used to estimate strength and deformability properties of discontinuous rock can be categorized into: (1) The direct testing method; (2) the empirical correlation method; and (3) the analytical decomposition model ...

Abstract: The paper provides a methodology to estimate the spatial variation of potentiometric surfaces, allowing for possible uncertainties such as instrument errors, human errors, and statistical errors. The spatial variation is ...

Abstract: Results of an investigation which is aimed at improving search patterns used in subsurface exploration are presented. Expressions are developed for probability of detection of elliptical targets from various continuous ...

Abstract: Strainburst is the most common type of rockburst in deep excavations, which sometime result in heavy losses. This research studies the feasibility of a conceptualized destressing method for strainburst control. In this ...

Abstract: Fluid flow through three natural single rough-rock fractures were measured at different normal stresses. The surface height of both halves of each of these fractures was measured with and without solidified Wood's metal ...

Abstract: In this study, laboratory tests were conducted to obtain the geomechanical properties for the coal matrix and coal discontinuities. Computed tomography (CT) scanning technology was then used to detect the pre-existing ...

Abstract: Nine slopes excavated in soft Conemaugh shales containing slickensides were investigated. The trace lengths and orientations of the slickensides found in exposures were measured. The shear strengths of the intact shales ...