Results 11 - 20 of 28

• Gas Sorption and Transport in Coals: A Poroelastic Medium Approach
  1/1/2009 - Peer reviewed journal articles
  In this paper, single-component gas sorption and transient diffusion processes are described within coal matrix exhibiting bimodal pore structure.
• Advances in Grid-Based Numerical Modeling Techniques for Improving Gas Management in Coal Mines
  6/1/2008 - Conference papers
  This paper summarizes the modeling efforts conducted by NIOSH in the U.S. and CSIRO in Australia to address various gas management issues encountered in longwall mines using the application of computational fluid dynamics (CFD) and numerical reservoir m...
• Computational Fluid Dynamics Study on the Ventilation Flow Paths In Longwall Gobs
  6/1/2006 - Conference papers
  This paper focuses on the flow patterns within the gob under three different ventilation systems: one-entry and two-entry bleederless systems, as well as a three-entry bleeder system.
• Forecasting Gas Emissions for Coal Mine Safety Applications
  6/1/2006 - Book chapters
  This chapter provides guidelines for determining the gas content of coalbeds, estimating the gas-in-place, and predicting gas flow and emissions before and during coal mining operations.
• Methods to Determine the Status of Mine Atmospheres - an Overview
  4/1/2006 - Conference papers, Peer reviewed journal articles
  This paper serves as an overview to remind and/or instruct readers about gas-sampling methodologies and gas analyses to assist in determining the status of underground atmospheres.
• Remote Gob Gas Venthole Monitoring and Cellular Telephone-Based Real-Time Data Transmission System
  10/1/2002 - Conference papers
  Report on the development and field testing of a solar powered, remote gob gas venthole monitoring and cellular telephone-based real-time data transmission system.
• The Modified Direct Method: A Solution for Obtaining Accurate Coal Desorption Measurements
  5/1/2001 - Conference papers
  This paper covers the development of NIOSH's modified direct method to measure the gas content of coal samples.
• Prediction of Longwall Methane Emissions: An Evaluation of the Influence of Mining Practices on Gas Emissions and Methane Control Systems
  10/1/1999 - Reports of Investigations
  An analysis of the consequences of increasing longwall panel dimensions, particularly face width, in gassy coalbeds. Continuous longwall face emission monitoring studies were conducted at two adjacent mines operating in the Pocahontas No. 3 Coalbed, whe...
• A Technique for Measuring Toxic Gases Produced by Blasting Agents
  1/1/1997 - Conference papers
  Traditional techniques to experimentally determine toxic fumes produced by detonating high explosives are not applicable to blasting agents. To detonate properly, blasting agents require confinement, a significant booster, and other parameters.
• Detection and Control of Spontaneous Heating in Coal Mine Pillars-A Case Study
  1/1/1995 - Reports of Investigations
  This U.S. Bureau of Mines study examined spontaneous heating episodes in coal mine pillars in an active underground coal mine. The objective of this study was to discover if the location of future events of pillar spontaneous heating could be inferred ...