Modify Selection
- Research methods and measures:
- Numerical modeling
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Results 71 - 80 of 97
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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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6/1/2005 - Conference papersThis paper describes the application of a finite difference program to develop a geomechanical model that predicts permeability changes within the rock mass.
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8/1/2004 - Conference papersIn underground coal mines, concrete block stoppings are widely used to control mine ventilation. Researchers developed a numerical model to evaluate the performance of stopping materials and different wall geometries in a controlled environment.
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8/1/2004 - Conference papersUnderground limestone mine roofs in Northern Appalachia can be subject to high horizontal stresses. A case study is presented showing that induced stress changes in the immediate roof are less likely if the pillars contain weak bedding planes.
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5/1/2004 - Conference papersDiscusses implementation of a real-time neural network which can discriminate mine fires from nuisance diesel emissions as part of an atmospheric mine monitoring system in NIOSH's Safety Research Coal Mine.
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5/1/2004 - Conference papersResearchers are investigating the causes and mechanisms of roof failure in underground mines with the goal that better understanding these issues will lead to better layout and support designs to help prevent fall-of-ground accidents and fatalities.
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9/1/2003 - Conference papersAs part of safety and stability studies at three underground mines in the United States, researchers installed earth pressure cells and embedment strain gauges in cemented rockfill to measure stress and strain changes as mining progressed and the rockfi...
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8/1/2003 - Conference papersA three-step method is presented to determine nonlinear stress-strain curves for boundary-element programs used in many mining applications. The method requires a suite of laboratory-scale strength tests at various confining pressures.
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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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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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Content source: National Institute for Occupational Safety and Health, Mining Program