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Results 1 - 10 of 76
10/1/2009 - Peer reviewed journal articlesInstruments remaining in a test section of a lead/zinc/copper room and pillar mine where pillar mining had taken place 14 years before were read to monitor long-term stability and quantify time dependent behavior in the mine roof and backfill.
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.
9/1/2008 - Conference papersThis paper summarizes recent accomplishments in a research program that is addressing mine fire prevention, detection, management, and suppression, and provides an overview of the next phase of the NIOSH mine fire research program.
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.
2/1/2007 - Peer reviewed journal articlesA study of ground behavior, reinforcement performance and stress redistribution looked at a longwall tailgate under severe horizontal stress. Comparison to field results showed that a FLAC-2D model captured the significant roof and support behavior.
3/1/2004 - Reports of InvestigationsHighly stressed rock in stopes continues to be a primary safety risk for miners in underground mines because this condition can result in failures of ground that lead to both injuries and death.
2/1/2004 - Conference papersThe primary goal of this project was to obtain detailed data on the interaction between the mine roof and the support elements for use in modeling studies.
7/1/2001 - Conference papersIn Utah, 3-D, full waveform, autonomous microseismic arrays were placed underground and on the surface of a longwall coal mine with overburden exceeding 750 m. Overall 13,000 seismic events, including a magnitude 4.2 event, were detected and located.
9/18/2020 - Contracts and cooperative agreementsA capacity-building contract with the University of Utah to improve seismic coverage, instrument a yield pillar, develop an extended numerical model, and evaluate statistical methods.
10/27/2016 - News articlesSee NIOSH at the 2016 Underground Stone Seminar in Louisville, KY, on December 6-7.