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- Research methods and measures:
- Ground stability
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Results 11 - 20 of 28
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1/1/2018 - Peer reviewed journal issuesAn article describing a comprehensive monitoring program that measured the rock mass displacements, support response, and stress changes at a longwall tailgate entry in West Virginia.
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11/16/2016 - Contracts and cooperative agreementsA capacity-building contract to quantify the ground response in underground coal mines with different geologic settings and depths of cover.
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11/15/2016 - Contracts and cooperative agreementsA capacity-building contract to develop a roof bolt drill instrumented for ground characterization, mapping, and support design.
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3/1/2016 - Peer reviewed journal articlesThis article by NIOSH describes the advantage of using numerical models with the strength reduction method to evaluate entry stability in complex multiple-seam conditions.
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11/3/2015 - Unpublished documents and reportsA description of two Ground Control Program projects that aim to enhance mine safety through improved longwall pillar designs that consider a mine’s local geology.
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7/1/2008 - Conference papersThe objective was to determine whether a qualitative but coherent redistribution of velocity, indicating change in location of induced stress, could be imaged as mining occurred in known locations by using a local earthquake tomography software.
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7/1/2008 - Conference papersThis paper describes a case study where a surface-based microseismic system, using triaxial geophones in boreholes drilled from the surface, was deployed at a large limestone mine.
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7/1/2008 - Conference papersThis paper presents a pillar design methodology that was developed from a study of pillar performance in operating stone mines and concludes with guidelines for applying a developed equation and selecting appropriate input parameters.
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7/1/2007 - Conference papersThis paper describes a project in which three-dimensional time-lapse velocity tomograms were generated to image stress redistribution around a longwall panel to produce a better understanding of the mechanisms that lead to ground failure.
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5/1/2007 - Information CircularsThe goal of this study is to help identify the location and likely severity of multiple-seam interactions. Mine planners can use this information to adjust the ground support, pillar design, or mine layout to minimize the hazard.
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Content source: National Institute for Occupational Safety and Health, Mining Program