Download or read book Deep Cut Mine Face Ventilation written by Charles A. Babbitt and published by . This book was released on 1987 with total page 219 pages. Available in PDF, EPUB and Kindle. Book excerpt: Remotely controlled continuous miners and automated temporary roof support systems have made extended cuts in room and pillar mining possible. Cuts of up to 40 ft or more are feasible between place changes, which could significantly increase coal mine productivity. Application of these developments, however, has been limited by the lack of adequate face ventilation technology. The Extended Advance Ventilation System (EAVS) is a water-powered auxiliary ventilation system for methane and dust control on mining sections which are making extended cuts. EAVS is centered around the fact that water sprays can also move air like small fans. The system consists of several spray manifolds strategically placed on continuous miners to direct intake air to the face and sweep contaminated air across the face toward the return at ventilation setback distances of up to 60 ft. EAVS uses the recently developed Improved Sprayfan as a base (USBM contract J0113010) and uses additional forward and reverse pointing sprays to provide the extra air-moving power needed to support the clean/contaminated air-splits at the extended setbacks. This report describes the engineering analysis, laboratory development and underground testing of EAVS. A detailed description of the test facility, evaluation techniques, and system test results is also provided.
Download or read book Final Report for Deep Cut Mine Face Ventilation written by Foster-Miller and published by . This book was released on 1987 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Exhaust Ventilation of Deep Cuts Using a Continuous mining Machine written by and published by . This book was released on 1985 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Jet Fan Ventilation in Very Deep Cuts written by Gerrit V. R. Goodman and published by . This book was released on 1992 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mine Ventilation written by S. Bandopadhyay and published by CRC Press. This book was released on 2004-05-15 with total page 546 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of the 10th US North American Mine Ventilation Symposium in Anchorage 2004 was to bring together practitioners involved in the planning and operation of underground ventilation systems, to provide a forum for debate and exchange of ideas, and to share information on the advances which have been made and consider problems which remain in the broad field of mine ventilation. The Mine Ventilation Symposium series has always been a premier forum for ventilation experts, practitioners, educators, students, regulators and manufacturers from around the world to exchange knowledge, ideas and opinions. This volume features over sixty selected technical papers from fifteen countries around the world including topics such as mine fires and explosions,case studies, diesel in underground mines, face ventilation, ventilation systems design, strata gas and control, ventilation and control systems, modeling and software development, dust generation, transport and control.
Download or read book Mine Ventilation written by Purushotham Tukkaraja and published by CRC Press. This book was released on 2021-06-29 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the proceedings of the 18th North American Mine Ventilation Symposium held, on a virtual platform, June 12-17, 2021. This symposium was organized by South Dakota Mines, Rapid City, South Dakota, in collaboration with the Underground Ventilation Committee (UVC) of the Society for Mining, Metallurgy & Exploration (SME). The Mine Ventilation Symposium series has always been a premier forum for ventilation experts, practitioners, educators, students, regulators, and manufacturers from around the world to exchange knowledge, ideas, and opinions. This volume features fifty-seven selected technical papers in a wide range of topics including: auxiliary ventilation, case studies of mine ventilation, computational fluid dynamics applications in mine ventilation, diesel particulate control, electric machinery in mine ventilation, mine cooling and refrigeration, mine dust monitoring and control, mine fans, mine fires and explosion prevention, mine gases, mine heat, mine management and organization of ventilation, mine ventilation and automation, occupational health and safety in mine ventilation, renewable/alternative energy in mine ventilation, ventilation monitoring and measurement, ventilation network analysis and optimization, and ventilation planning and design.
Download or read book Evaluation of a Combined Face Ventilation System Used with a Remotely Operated Mining Machine written by Edward F. Divers and published by . This book was released on 1982 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Face Dust Concentrations at Mines Using Deep Cutting Practices written by Department of Health and Human Services and published by CreateSpace. This book was released on 2013-10 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dust surveys were conducted at six underground mines to determine if deep-cut mining practices expose face workers to higher levels of respirable dust by comparing levels during the first 20 ft of advance (regular-cut depth) during the deep cut to levels during the final 10 to 20 ft of advance (deep-cut depth). The studies were conducted at mines where the Mine Safety and Health Administration (MSHA) had approved an extended curtain setback distance with operation of a flooded-bed scrubber to permit taking deep cuts of up to 40 ft. In general, all of the selected mines exercised good dust control practices by maintaining water sprays, scrubber airflows, proper curtain setback distances and providing sufficient airflow to the active faces. These practices minimized variability in dust levels related to factors other than the depth of cut. To ensure proper scrubber functioning, the scrubber screen was back-flushed before commencing each cut. Both exhausting and blowing face ventilation configurations were studied. All of the operations surveyed for this study were able to successfully implement deep-cutting methods without significantly increasing the dust exposures of face workers during the cutting and bolting cycles. For exhausting face ventilation, field data indicate that scrubber airflow is the most important factor for controlling dust. Clogging of the scrubber screen can result in lower airflows; therefore, the screen must be periodically tapped and back-flushed. Data collected for this study indicate that 20-mesh screens should be cleaned for every 40 ft of advance because 22% of the deep-cut sequences surveyed for this study experienced a 20% to 35% decrease in scrubber airflow over the course of the cut. For blowing face ventilation, field and laboratory data indicate that maintaining a proper curtain-to-scrubber airflow ratio of 1.0 and a curtain setback distance that allows the miner operator to stand at the mouth of the curtain helps control dust. Curtain airflows should be measured before activation of the scrubber regardless of ventilation type (exhausting or blowing) to avoid erroneously overinflating the ratio. The curtain setback variance should be greater than the maximum cutting depth to allow miner operators to maintain their position at the mouth of the curtain when the miner is fully extended into the cut. Greater curtain setback distances associated with deep-cutting methods may result in cuts that do not require ventilation curtain, such as the initial heading developments beyond the last open crosscut. For these cuts, dust levels were generally lower during development of deep cuts when compared to regular cuts. However, adequate ventilation of cuts without ventilation curtain is dependent on a properly functioning scrubber. Dust levels on the bolting faces did not appear to be affected by the longer cycles associated with deep-cut mining practices when curtain airflow was measureable and the curtain was periodically advanced in sync with the bolting machine.
Download or read book Evaluation of Face Dust Concentrations at Mines Using Deep cutting Practices written by Jay Colinet and published by . This book was released on 2011 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Dust surveys were conducted at six underground mines to determine if deep-cut mining practices expose face workers to higher levels of respirable dust by comparing levels during the first 20 ft of advance (regular-cut depth) during the deep cut to levels during the final 10 to 20 ft of advance (deep-cut depth). The studies were conducted at mines where the Mine Safety and Health Administration (MSHA) had approved an extended curtain setback distance with operation of a flooded-bed scrubber to permit taking deep cuts of up to 40 ft. In general, all of the selected mines exercised good dust control practices by maintaining water sprays, scrubber airflows, proper curtain setback distances and providing sufficient airflow to the active faces. These practices minimized variability in dust levels related to factors other than the depth of cut. To ensure proper scrubber functioning, the scrubber screen was back-flushed before commencing each cut. Both exhausting and blowing face ventilation configurations were studied. All of the operations surveyed for this study were able to successfully implement deep-cutting methods without significantly increasing the dust exposures of face workers during the cutting and bolting cycles. For exhausting face ventilation, field data indicate that scrubber airflow is the most important factor for controlling dust. Clogging of the scrubber screen can result in lower airflows; therefore, the screen must be periodically tapped and back-flushed. Data collected for this study indicate that 20-mesh screens should be cleaned for every 40 ft of advance because 22% of the deep-cut sequences surveyed for this study experienced a 20% to 35% decrease in scrubber airflow over the course of the cut. For blowing face ventilation, field and laboratory data indicate that maintaining a proper curtain-to-scrubber airflow ratio of 1.0 and a curtain setback distance that allows the miner operator to stand at the mouth of the curtain helps control dust. Curtain airflows should be measured before activation of the scrubber regardless of ventilation type (exhausting or blowing) to avoid erroneously overinflating the ratio. The curtain setback variance should be greater than the maximum cutting depth to allow miner operators to maintain their position at the mouth of the curtain when the miner is fully extended into the cut. Greater curtain setback distances associated with deep-cutting methods may result in cuts that do not require ventilation curtain, such as the initial heading developments beyond the last open crosscut. For these cuts, dust levels were generally lower during development of deep cuts when compared to regular cuts. However, adequate ventilation of cuts without ventilation curtain is dependent on a properly functioning scrubber. Dust levels on the bolting faces did not appear to be affected by the longer cycles associated with deep-cut mining practices when curtain airflow was measureable and the curtain was periodically advanced in sync with the bolting machine." - p. 1-2
Download or read book Bureau of Mines Research written by United States. Bureau of Mines and published by . This book was released on 1992 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Survey of Face Ventilation Practices in Coal Mines written by R. Ward Stahl and published by . This book was released on 1960 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Decisions written by United States. Federal Mine Safety and Health Review Commission and published by . This book was released on 1994-10 with total page 590 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Highlights Bureau of Mines Mining Research Program 1987 written by United States. Bureau of Mines and published by . This book was released on 1988 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book New Technology in Mine Health and Safety written by A. Wahab Khair and published by . This book was released on 1992 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book New Publications written by United States. Bureau of Mines and published by . This book was released on 1982 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mine Ventilation written by E. De Souza and published by CRC Press. This book was released on 2002-01-01 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt: This proceedings volume showcases all aspects of the science and engineering of mine ventilation and health and safety, with special focus on the applied aspects of mine ventilation practice. Papers span the spectrum of mine ventilation and air conditioning.
Download or read book 11th US North American Mine Ventilation Symposium 2006 written by Jan M. Mutmansky and published by CRC Press. This book was released on 2006-05-18 with total page 644 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is the eleventh in a series which documents the technical papers of the mine ventilation symposium, which was initiated in 1982 by the Underground Ventilation Committee of the Society for Mining, Metallurgy, and Exploration, Inc. In more recent years, the event has expanded to include all of North America and is known as the US/North Am
