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- Mining types and methods:
- Retreat mining
- Document types:
- Conference papers
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Results 1 - 8 of 8
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7/1/2009 - Conference papersThis paper documents the MHRA process and analyzes the strengths and weaknesses of the technique as it applies to pillar recovery operations.
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7/1/2009 - Conference papersThis paper provides an overview of current deep cover pillar recovery practice.
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8/1/2002 - Conference papersA study is described with the objective of evaluating the various methods and strategies by which panels, production pillars and barrier pillars are developed and extracted under deep cover, and to develop appropriate design guidelines.
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8/1/2002 - Conference papersStudies have identified a number of factors for evaluating a pillar extraction plan. This paper discusses each of the factors, presents relevant accident statistics, and shows how the risk factors can be combined to estimate the overall hazard.
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8/1/2001 - Conference papersThe risk of major pillar falls can often be reduced by leaving final stumps, large enough to protect the intersection but small enough to not inhibit gob caving. Analyses were conducted to assess factors on the size variation of remnant stumps.
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8/1/2001 - Conference papersNIOSH researchers installed 39 instrumented, fully grouted bolts at six test sites in a trona mine retreat panel to study mine roof stability for the improvement of workplace safety.
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3/1/1999 - Conference papersRecently, powerful design methods have emerged from analysis of large data bases of real-world pillar successes and failures. In the process, our understanding of pillar mechanics has been greatly enriched.
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1/1/1999 - Conference papersA study on the mechanics of strata behavior determined through extensive field measurements. Practical techniques for assessing roof behavior were developed along with a prototype remote controlled roof support system.
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Content source: National Institute for Occupational Safety and Health, Mining Program