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- Products and materials:
- Roof bolts
- or
- Non-tensioned full contact bolts
- or
- Resin bolts
- or
- Fully-grouted resin anchored bolts
- or
- Cable bolts
- Document types:
- Conference papers
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Results 1 - 10 of 25
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8/1/2004 - Conference papersThis paper focuses on a computer simulation used to model roof behavior and rock bolt interaction in a collaborative study of ground behavior, reinforcement performance, and stress redistribution in a coal mine entry under severe horizontal stress.
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8/1/2001 - Conference papersA statistical study of roof bolt performance was conducted in 37 U.S. mines. Analysis of the results led to guidelines for making preliminary estimates for bolt length, capacity, and pattern to improve roof stability in difficult conditions.
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10/1/2007 - Conference papersThis paper discusses the methods NIOSH used to identify noise sources on a roof bolting machine while drilling.
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8/1/2006 - Conference papersThis retrospective paper discusses changes in bolt types and usage over the past 24 years, pointing out some of the biggest myths and hailing the most significant advances.
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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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8/1/2004 - Conference papersMines with low-strength roof are much more likely to struggle with roof falls. This paper focuses on two mines in two different seams, conducting statistical analysis to determine which support combinations have proven to be most effective.
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8/1/2004 - Conference papersThe San Juan Mine and the National Institute for Occupational Safety and Health conducted a study to measure how development mining affected bolt loads.
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8/1/2003 - Conference papersThis paper presents information that shows that short-encapsulation pull tests can provide the information necessary to improve ground control in variable roof conditions.
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8/1/2003 - Conference papersStanding crib supports have been applied in underground mining programs to resist large roof movements and sustain high-loads. The parameter that has not been examined and is not well understood is the effect that a crib or other types of standing supp...
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8/1/2003 - Conference papersTo measure the loading behavior of friction bolts, NIOSH researchers installed strain gauges on the interior of friction bolts and developed a miniature data acquisition system (MIDAS) that fits inside the hollow portion of the friction bolt.
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Content source: National Institute for Occupational Safety and Health, Mining Program