Results 1 - 10 of 21

• Technology News 526 - Proceedings of the International Workshop on Rock Mass Classification in Underground Mining
  7/1/2007 - Technology News
  The International Workshop on Rock Mass Classification in Underground Mining provided a forum for leading practitioners of rock mass classification from around the world to come together and share their methods and experiences with the technique.
• An Approach to Identifying Geological Properties from Roof Bolter Drilling Parameters
  8/1/2000 - Conference papers
  Rock drilling parameters including thrust, rotational speed, torque and velocity were examined to determine the ability to identify the strength of the rocks being drilled from the measured parameters.
• Detecting and Managing Dynamic Failure of Near-Seam Features in Coal and Nonmetal Mines
  9/16/2020 - Research projects
  A project to develop strategies for identifying and managing geologic features that increase the risk of dynamic failures in underground coal deposits.
• Identification of Areas at Risk for Coal Bursts in Deep Cover Room and Pillar Mines
  10/22/2016 - Research projects
  A project to define the geologic and stress criteria associated with an elevated risk of coal bursts, considering both U.S. and international experience through visits to coalfields.
• Roof Support
  9/22/2015 - Research areas
  Roof Support Topic Page
• Coal Mine Geology in the U.S. Coal Fields: a State-of-the-art
  8/1/2006 - Conference papers
  Describes the procedures and thought processes used by coal mine geologists when determining various mineability and reserve extraction feasibility issues. The paper also address underground geologic hazard mapping and prediction techniques.
• Managing Excess Gas Emissions Associated with Coal Mine Geologic Features
  6/1/2006 - Book chapters, Information Circulars
  This chapter summarizes how certain geologic features may be associated with unexpected increases in gas emissions during coal mining. These unexpected emissions have the potential to create explosive conditions in the underground workplace. Also discu...
• Spatial Trends in Rock Strength - Can They Be Determined From Coreholes?
  8/1/2004 - Conference papers
  Average UCS may differ between coreholes but not be statistically significant, and widely spaced coreholes may be able to identify valid spatial trends in rock strength. The paper describes NIOSH's extensive investigation into these issues.
• Shear Mechanism for Mining-Induced Fractures Applied to Rock Mechanics of Coal Mines
  8/1/2002 - Conference papers
  Two examples of an echelon mining-induced fractures seen in hard-rock mines provided a basis for inferring that fracture zones and bedding plane sap rations immediately surrounding mine openings are promoted by oblique shear into the openings.
• Emerging Technologies and the Future of Geotechnical Instrumentation
  7/1/2001 - Book chapters
  This paper discusses (1) the results of a ground-based hyperspectral imaging tool used to map the geology of an open-pit mine highwall, and (2) interferometric synthetic aperture radar and how it can be used in a variety of geotechnical situations.