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- Research methods and measures:
- Seismic monitoring
- Document types:
- Conference papers
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Results 1 - 10 of 20
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8/1/2009 - Conference papersThis paper describes network installation and methods used to collect, process, and distribute seismicity information collected on the surface above two longwall coal mines in western Colorado, and gives several examples of the collected data.
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7/1/2008 - Conference papersThis paper describes a seismic network installed in western Colorado in the vicinity of three underground coal mines, its features for user access to data, and then gives two examples of seismic events resulting in some damage to mine workings.
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2/1/2002 - Conference papersA deep longwall coal mine was instrumented with a 3-D microseismic system to help determine the exact strata mechanics associated with rock failure, redistribution of stress and associated gob formation from the longwall.
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7/1/2001 - Conference papersOutlines the concepts used to correlate rock failure with microseismic events and presents examples of microseismic monitoring together with associated computer modeling of the rock failure from several mine sites.
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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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Analysis of Seismic Signatures from Gas and Dust Based Explosions at the Lake Lynn Experimental Mine2/1/2008 - Conference papersA seismic monitoring system at NIOSH's Lake Lynn Experimental Mine has monitored gas and dust-based explosions and impact tests. Results suggest that large unrestricted explosions can generate the same magnitude as small restricted explosions.
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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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4/1/2007 - Conference papersThis paper describes a seismic monitoring network that has recently been installed in the North Fork Valley coal mining region of western Colorado as part of a NIOSH mine safety technology transfer project with two longwall coal mine operators.
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2/1/2007 - Conference papersThe goal of this study was to review periods of elevated microseismic activity and determine whether fracture activity rate can be used to anticipate roof falls. The results showed that limited success would be achieved by such a system.
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Content source: National Institute for Occupational Safety and Health, Mining Program