Results 1 - 10 of 33

• CMRR - Coal Mine Roof Rating
  8/20/2013 - PC software
  Software for estimating the relative inherent strength of coal mine roof.
• Roof Span Design for Underground Stone Mines
  7/1/2010 - Conference papers
  In this paper, the findings of a survey of roof span stability issues and design practices are presented, and the observed factors contributing to roof instability are discussed.
• Time Dependent Roof Deterioration at a Central Ohio Coal Mine
  7/1/2009 - Conference papers
  This paper describes a NIOSH field study to evaluate mine entries with highly moisture-sensitive roof rock for long-term stability and seasonal effects. It presents the results from the field study and the key issues determined from the study.
• Computer Simulation of Ground Behaviour and Rock Bolt Interaction at Emerald Mine
  8/1/2004 - Conference papers
  This paper focuses on a computer simulation used to model roof behavior and rock bolt interaction in a collaborative study of ground behavior, reinforcement performance, and stress redistribution in a coal mine entry under severe horizontal stress.
• Geologic Hazards and Roof Stability in Coal Mines
  10/1/2003 - Information Circulars
  This report describes the geologic origin, association, and potential danger from the most common hazards. Discussions of weak rock include drawrock, rider coals, head coal, stackrock, and stream valley effects.
• Roof Monitoring Helps Prevent Injuries in Stone Mines
  11/1/2000 - Peer reviewed journal articles
  The Roof Monitoring Safety System (RMSS) is described, compared to other roof-monitoring technology, and described in context with proactive ground control plans for stone mines.
• Roof Monitoring in Limestone - Experience with the Roof Monitoring Safety System (RMSS)
  1/1/2000 - Conference papers
  This paper outlines the evolution of the RMSS and how it can be used in a comprehensive, proactive ground control safety program. A case history describes the RMSS being used to evaluate a mechanical impact sealing machine at a limestone mine.
• Long-Term Stability of a 13.7 x 30.5-m (45 x 100-ft) Undercut Span Beneath Cemented Rockfill at the Turquoise Ridge Mine, Nevada
  11/20/2019 - Peer reviewed journal articles
  An article presenting the results of an instrumented backfill span study conducted at the Turquoise Ridge Mine.
• Ground Monitoring
  1/16/2018 - Research areas
  Ground Monitoring Topic Page
• Horizontal Stress
  9/22/2015 - Research areas
  Horizontal Stress Topic Page