Results 1 - 10 of 25

• Methane-Air Detonation Experiments at NIOSH Lake Lynn Laboratory
  9/1/2010 - Conference papers
  This paper describes the first phase of research aimed at understanding explosion pressures that can develop in coal mines and the factors that lead to high explosion pressure and possible transition to detonation.
• Modeling the Effect of Barometric Pressure Changes on Spontaneous Heating in Bleederless Longwall Panels
  3/1/2010 - Conference papers
  The effect of inflow and outflow of gas on the potential spontaneous heating in the gob was investigated using the computational fluid dynamics (CFD) model.
• A Gas Pressure-Based Drift Round Blast Design Methodology
  6/1/2008 - Conference papers
  The paper provides: (a) a description of the gas pressure-based design approach to blasting, (b) a simple technique for estimating the damage radius of the buffer row of holes, and (c) a discussion of smoothwall design for the contour row of holes.
• Explosion Pressure Design Criteria for New Seals in U.S. Coal Mines
  7/1/2007 - Guides and manuals, Information Circulars
  This report provides a sound scientific and engineering justification to recommend a three-tiered explosion pressure design criterion for new seals. The recommendations contained herein apply to new seal design and construction in U.S. coal mines.
• Wireless Sensor Network with Methane Gas Cloud Detector and Absolute Pressure Sensor
  11/28/2016 - Contracts and cooperative agreements
  A contract to (1) conduct absolute pressure measurement and recording in both non-permissable and permissable areas of a coal mine and (2) explore methane gas cloud detection, measurement, and visualization.
• Strengthening an Existing 20-PSI Mine Seal with PPG's Polyurea Coated Retrofit
  7/22/2014 - Contracts and cooperative agreements
  A contract to develop a spray-applied polyurea coating system that would upgrade existing 20-psi approved mine seals to withstand blast pressures greater than 60 psi.
• Relationship Between Radiated Seismic Energy and Explosive Pressure for Controlled Methane and Coal Dust Explosions in an Underground Mine
  3/1/2012 - Peer reviewed journal articles
  This paper describes the research conducted to quantify a relationship between measured values of radiated seismic energy and peak explosive pressure generated.
• Comparison of the Transverse Load Capacities of Various Block Ventilation Stoppings under Arch Loading Conditions
  6/1/2008 - Conference papers
  This paper compares the transverse load capabilities of several block materials and wall dimensions commonly used in stopping constructions based upon simulated three-hinge, rigid-arch loading tests of half-wall constructions.
• Temperature Corrections to Earth Pressure Cells Embedded in Backfill
  4/1/2006 - Reports of Investigations
  Determining backfill stress is an important part of evaluating mine safety, whether personnel are working in proximity to backfill or in other areas of the mine where backfill is an integral part of regional support.
• Detonation Wave Propagation in Underground Mine Entries
  1/1/2005 - Peer reviewed journal articles
  This publication details a series of explosive detonation experiments conducted in NIOSH's Bruceton and Lake Lynn Experimental Mines to evaluate low-level (<6 psig) detonation wave propagation behavior in single- and multiple-entry configurations.