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- Mining types and methods:
- Multiple seam mining
- or
- Overmining
- or
- Undermining
- Document types:
- Conference papers
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Results 1 - 8 of 8
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7/1/2009 - Conference papersThis paper provides an overview of current deep cover pillar recovery practice.
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5/1/2007 - Conference papers, Information CircularsA detailed evaluation of the multiple-seam experiences at Harris No. 1 Mine was done as part of NIOSH's nationwide multiple-seam mining case history database.
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2/1/2007 - Conference papersRelatively few longwall mines in the U.S. operate under multiple seam conditions where the two seams are less than 200 ft apart. This paper describes the experience of six that do and lessons learned.
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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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3/1/2006 - Conference papersMore than 300 case histories have been collected from underground mines mainly in central Appalachia. This paper focuses on several of the more challenging multiple seam mining situations that have been encountered.
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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 papersResults show that the remnant upper seam structure's size can influence multiple seam interaction. Specifically, smaller critically loaded upper seam pillars appear more likely to cause lower seam ground control problems than wider pillars.
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8/1/2003 - Conference papersNIOSH is conducting research to develop mine design algorithms that will result in safer multiple seam mines. This paper presents an overview of multiple seam issues in the central Appalachian coalfields.
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Content source: National Institute for Occupational Safety and Health, Mining Program