Results 71 - 77 of 77

• Pillar Design Issues for Underground Stone Mines
  1/1/1999 - Conference papers
  This paper examines current design practices for stone mines and discusses issues for safe mine layouts so that a rational first approach towards balancing the demands for increased production can be weighed against increased risk to worker safety.
• An Overview of Geomechanics Safety Research on Mobile Roof Supports
  1/1/1999 - Conference papers
  A study on the mechanics of strata behavior determined through extensive field measurements. Practical techniques for assessing roof behavior were developed along with a prototype remote controlled roof support system.
• Analysis of the Interaction Between Mobile Roof Supports and Mine Strata
  11/1/1998 - Conference papers
  To provide a better understanding of the mechanics of strata deformation, the authors have collected and reviewed measurements of convergence and stress in one western U.S. mine and have completed modeling for two typical pillar-pulling plans.
• A Case Study of Bolt Performance in a Two-entry Gate Road
  8/1/1998 - Conference papers
  This paper presents the results of a case study conducted in a two-entry gateroad in a coal mine where excessive roof deformation and bolt loading resulted in failure of many roof supports.
• Simplified Pre- and Post-Processing Technique for Performing Finite-Element Analyses of Deep Underground Mines
  8/1/1997 - Conference papers
  Demonstration of a technique developed at the Spokane Research Center that allows the user to create a finite-element model of a two-dimensional section of an underground mine in a relatively straightforward manner.
• A Method for the Selection of Rock Support Based on Bolt Loading Measurements
  8/1/1997 - Conference papers
  A method to assist in the evaluation and selection of roof bolts using in situ measurements of roof bolt loading has been developed by researchers of the Spokane Research Center, National Institute for Occupational Safety and Health.
• The Effects of Roof and Floor Interface Slip on Coal Pillar Behavior
  1/1/1990 - Conference papers
  This U.S. Bureau of Mines paper discusses the importance of an interface slip mechanism between the coalbed and the surrounding strata in controlling the extent and pattern of stresses and deformations in a coal pillar.