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 101 - 110 of 137
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7/1/2002 - Reports of InvestigationsThe process of drilling and bolting the roof is currently one of the most dangerous jobs in underground mining, resulting in about 1,000 accidents with injuries each year in the United States. Researchers from the Spokane Research Laboratory of the Nat...
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7/1/2002 - Conference papersThe investigation reported here is an initial study of the stability of the first of the proposed chambers at the Homestake Mine in Lead, SD.
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8/1/2001 - Conference papersThe Support Technology Optimization Program (STOP) was updated to Version 2.3. This paper describes the additional features: including uncontrolled convergence into the design requirements for standing roof supports; the addition of design procedures fo...
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8/1/2001 - Conference papersA state-of-the-art, three-dimensional, full waveform, microseismic system was used to analyze the rock failure around a deep bump-prone longwall panel. Analysis of the recorded events is discussed.
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7/1/2001 - Conference papersA system was developed to monitor rock and coal stresses during mining of an entire longwall panel. The system was designed to generate data in near real time to evaluate rock behavior in roof strata and the onset of hazardous conditions as overburden s...
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7/1/2001 - Conference papersTo study bump mechanisms, conditions in the vicinity of a deep longwall mining face in bump-prone strata were monitored using three discrete systems in an effort to increase understanding of mining-induced stress redistribution and bump potential.
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7/1/2001 - Conference papersAssuring ground control safety in many mining and tunneling projects depends, at least in part, on an understanding of in situ stress conditions that will be encountered.
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7/1/2001 - Conference papersInstrumented cable bolts were used in conjunction with existing ground control to monitor rock mass loads at various field sites. By monitoring rock mass load and displacement, more effective ground support can be selected and installed.
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6/1/2000 - Technology NewsThe Roof Monitoring Safety System (RMSS) introduced in late 1997 has been modified to improve durability and simplify the measurement of roof or rib movement.
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1/1/2000 - Conference papersNIOSH is investigating remote sensing technologies to detect, monitor, and mitigate surface mine hazards that lead to slope failure. A field-portable spectro-polarimetric imager and a stationary interferometric radar device are promising options.
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Content source: National Institute for Occupational Safety and Health, Mining Program