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Evaluation of the 20 L dust explosibility testing chamber and comparison to a modified 38 L vessel for underground coal

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International Journal of Mining Science and Technology 2018年第6期28卷 885-890页

作者： Robert Eades kyle perry Catherine Johnson Jacob Miller Department of Mining and Nuclear Engineering Missouri University of Science and Technology

The phenomenon of combustible dust explosions is present within many industries. Tests for explosibility of dust clouds per ASTM E1226 use a 20 L explosive chamber that places the combustible dust directly below the dispersion nozzle which generates a thorough mixture for testing purposes. However, in the underground coal mining industry, there are a number of geologic, mining, and regulatory factors that change the deposition scheme of combustible coal dust. This causes the atmosphere of a coal mine to have a variable rock dust-coal dust mixture at the time of ignition. To investigate the impact of this variable atmosphere, a series of lean explosibility tests were conducted on a sample of Pittsburgh Pulverized coal dust. These explosibility tests were conducted in a 38 L chamber with a 5 kJ Sobbe igniter. The 38 L chamber generates a variable air-dust mixture prior to ignition. The test results indicate that the 38 L chamber experiences reduced explosive pressures, and lower explosibility index values when compared to the 20 L chamber.

关键词： Dust explosion Coal mining Coal dust Explosibility testing

Mitigation of floor heave in West Kentucky Coal Mine

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International Journal of Mining Science and Technology 2016年第3期26卷 521-525页

作者： perry kyle Bradley Joel Unrug Kot Klimek Mark Mining Engineering Department University of Kentucky Alliance Resource Partners

A West Kentucky mine operation in No. 11 seam encountered floor heave, due to the localized increase in the thickness of the fireclay mine floor. Floor heave has overridden seals installed in two mined out panels. The third seal's location was planned for isolating that area from the Mains. A plan of support has been developed to prevent repetition of the floor heave and related problems outby the seals. The applied ground control measures were successful. An attempt of a 3D numerical modeling was made; thus, it would match the observed behavior of the mine floor and could be used as a design tool in similar conditions. The paper describes sequence of events, an applied mitigation ground control system, and the first stage of numerical modeling.

关键词： Floor heave Presplit Secondary support Modeling

Guest editorial–special issue on ground control in mining in 2020

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International Journal of Mining Science and Technology 2021年第1期31卷 1-2页

作者： Michael M.Murphy Ted Klemetti Heather Lawson Brijes Mishra kyle perry CDC NIOSH PittsburghPA 15236USA CDC NIOSH SpokaneWA 99207USA Department of Mining Engineering West Virginia UniversityMorgantown 26501USA Department of Mining Engineering Missouri University of Science and TechnologyRollaMO 65409USA

Ground control is the science of studying and controlling the behavior of rock strata in response to mining ***-control-related research has seen significant advancements over the last 40 years,and these accomplishments are well documented in the proceedings of the annual International Conference on Ground Control in Mining(ICGCM)[1].The ICGCM is a forum to promote closer communication among researchers,consultants,regulators,manufacturers,and mine operators to expedite solutions to ground control problems in mining[2–7].Fundamental research and advancements in ground control science define the central core of the conference *** information to mine operators is a priority,as the conference goal is to offer solutions-oriented *** addition,the conference has included innovative technologies and ideas in miningrelated fields such as exploration,geology,and surface and underground mining in all *** new ground control technologies and design standards adopted by the mining industry were first discussed at *** conference is recognized as the leading international forum for introducing new ground-control-related research and products.

关键词： operators closer accomplishment

Guest editorial–Special issue on ground control in mining in 2017

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International Journal of Mining Science and Technology 2018年第1期28卷 1-2页

作者： Michael M.Murphy Brijes Mishra kyle perry Heather Lawson Pittsburgh Mining Research Division NIOSH Mining Engineering West Virginia University Mining&Nuclear Engineering Missouri S&T Spokane Mining Research Division NIOSH

Ground control is the science of studying and controlling the behavior of rock strata in response to mining *** control-related research has seen significant advancements over the last 36 years,and these accomplishments are well documented in the proceedings of the annual International Conference on Ground Control in Mining(ICGCM)[1].The ICGCM is a forum to promote closer communication among researchers,consultants,regulators,manufacturers,and mine operators to expedite solutions to ground control problems in mining[2–8].Fundamental research and advancements in ground control science define the central core of the conference *** information to mine operators is a priority,as the conference goal is to offer solution-oriented *** addition,the conference has included innovative technologies and ideas in mining-related fields such as exploration,geology,and surface and underground *** new ground control technologies and design standards adopted by the mining industry were first discussed at ***,this conference is recognized as the best forum for introducing new ground control-related research and products.

关键词： Guest controlling exploration response surface forum strata ideas

Guest editorial-special issue on ground control in mining in 2019

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International Journal of Mining Science and Technology 2020年第1期30卷 1-2页

作者： Michael M.Murphy Ted Klemetti Heather Lawson Brijes Mishra kyle perry Pittsburgh Mining Research Division NIOSHPittsburghPA 15228USA Spokane Mining Research Division NIOSHSpokaneWA 99207USA Mining Engineering West Virginia UniversityMorgantownWV 26506USA Mining&Nuclear Engineering Missouri S&TRollaMO 65409USA

Ground control is the science of studying and controlling the behavior of rock strata in response to mining ***-control-related research has seen significant advancements over the last 39 years,and these accomplishments are well documented in the proceedings of the annual International Conference on Ground Control in Mining(ICGCM)[1].The ICGCM is a forum to promote closer communication among researchers,consultants,regulators,manufacturers,and mine operators to expedite solutions to ground control problems in mining[2–7].Fundamental research and advancements in ground control science define the central core of the conference *** information to mine operators is a priority,as the conference goal is to offer solutions-oriented *** addition,the conference has included innovative technologies and ideas in miningrelated fields such as exploration,geology,and surface and underground mining in all *** new ground control technologies and design standards adopted by the mining industry were first discussed at ***,this conference is recognized as the best international forum for introducing new groundcontrol-related research and products.

关键词： operators closer accomplishment

Guest editorial-special issue on ground control in mining in 2018

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International Journal of Mining Science and Technology 2019年第1期29卷 1-2页

作者： Michael M.Murphy Ted Klemetti Heather Lawson Brijes Mishra kyle perry Pittsburgh Mining Research Division NIOSH Spokane Mining Research Division NIOSH Mining Engineering West Virginia University Mining&Nuclear Engineering Missouri S&T

Ground control is the science of studying and controlling the behavior of rock strata in response to mining operations. Ground control-related research has seen significant advancements over the last 37 years, and these accomplishments are well documented in the proceedings of the annual International Conference on Ground Control in Mining (ICGCM)(1)The ICGCM is a forum to promote closer communication among researchers, consultants。

关键词： NIOSH Guest editorial-special issue on ground control in mining in 2018