Results 1 - 6 of 6

• 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.
• Development of New Protocols to Evaluate the Transverse Loading of Mine Ventilation Stoppings
  6/1/2006 - Conference papers
  A new protocol based on rigid arch loading of the structure is proposed to determine the true transverse load capacity of block stoppings. Tests show that load capability depends on the block's physical properties and the wall's geometric properties.
• Maximizing the Ventilation of Large-Opening Mines
  6/1/2006 - Conference papers
  NIOSH research suggest that by incorporating ventilation planning into the mine planning process, using propeller fans, developing new stopping materials and construction methods, and using long pillars to eliminate crosscuts where possible, the ventila...
• Ventilation Planning Layouts for Large Opening Mines
  2/1/2004 - Conference papers
  Describes three alternative ventilation models for use in large opening underground mines with respect to their use in mines of various levels of development.
• Practical Techniques to Improve the Air Quality in Underground Stone Mines
  10/1/2002 - Conference papers
  Overview of a variety of techniques and methods that can be used to improve the air quality in underground stone mines.
• Load and Deflection Response of Ventilation Stoppings to Longwall Abutment Loading: A Case Study
  8/1/2001 - Conference papers
  This paper presents investigations of underground measurements conducted to determine the loading response of stoppings constructed from lightweight aggregate concrete masonry units.