Modify Selection
- Research methods and measures:
- Ground stability
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- Convergence
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- Cleat
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- Roof quality
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- Slope stability
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- Horizontal stress
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- Weak rock
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Results 71 - 80 of 137
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6/1/2007 - Conference papersThere are fundamental aspects of support design and ground control that we still do not understand or recognize when designing a support system. These issues are evaluated and a different approach to support design is proposed.
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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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5/1/2007 - Information CircularsFor the past several years, NIOSH has been conducting research to develop better techniques for predicting the location and severity of multiple-seam interactions. This paper presents the background to that study.
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1/1/2007 - Conference papersAnalysis of Multiple Seam Stability (AMSS) is a computer program to help mine planners evaluate potential interactions and reduce the risk of ground failure. This paper details a NIOSH study of multiple seam interactions and the development of AMSS.
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8/1/2006 - Conference papersA survey of pillar conditions was carried out at 21 operating limestone mines that use the room-and-pillar method. Pillar instability is most likely caused by unfavorable geological structures in pillars with width to height ratios of less than 1.5.
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8/1/2006 - Conference papersNIOSH conducted wet/dry immersion cycling of clay-rich rocks, which provides an accurate, quick and inexpensive method for estimating the moisture sensitivity of mudrocks. With this information mine operators can begin to anticipate hazardous ground.
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4/1/2006 - Reports of InvestigationsThis paper summarizes developments in the application of ground-based radar to slope stability monitoring and presents information on NIOSH-sponsored experiments recently completed.
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8/1/2005 - Conference papersThe conclusion drawn from this study was that standing supports do not have sufficient capacity to control main roof or floor loading or prevent the resulting convergence of the tailgate entry.
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8/1/2005 - Conference papersThis research seeks to provide design guidelines that enable mine planning engineers to assess the safety risk of an adverse multiple seam mining interaction based on mine geometry factors, mine layout factors, and site specific geologic conditions.
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8/1/2005 - Conference papersNIOSH continues to investigate the behavior of fully grouted roof bolts in the weak roof rock of Pittsburgh's Safety Research Coal Mine. This paper describes the results of three roof bolt studies.
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Content source: National Institute for Occupational Safety and Health, Mining Program