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Results 31 - 40 of 44
8/1/2000 - Conference papersThis paper addresses a deficit in pillar loading research by exploring the accuracy of empirical abutment load calculations using insight provided by an elastic overburden model, a laminated overburden model and field observations.
12/1/1999 - Peer reviewed journal articlesAs underground stone mining expands to deeper cover and more efficient methods are used, effective stone pillar design methods become more important. In this paper, 72 stone mine pillar designs are examined for factors affecting stability.
3/1/1999 - Conference papersRecently, powerful design methods have emerged from analysis of large data bases of real-world pillar successes and failures. In the process, our understanding of pillar mechanics has been greatly enriched.
1/1/1999 - Conference papersThis 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.
6/1/1998 - Information CircularsA collection of 15 papers from leading international ground control specialists. The papers address the entire range of issues associated with coal pillars and have a decidedly practical flavor.
9/1/1997 - Peer reviewed journal articlesThis study describes methods of limiting cascading pillar failure, which occurs when a pillar in a mine layout fails, transferring its load to other pillars, causing failure. Design approaches are shown with examples for coal mining at shallow depth.
Simplified Pre- and Post-Processing Technique for Performing Finite-Element Analyses of Deep Underground Mines8/1/1997 - Conference papersDemonstration 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.
7/1/1997 - Technology NewsThe analysis of Retreat Mining Pillar Stability (ARMPS) computer program was developed in 1995 and has been widely accepted by the mining community. A Windows version of ARMPS is now available. It features simplified data input, graphics, and an expande...
Technology News 445 - Updated Analysis of Longwall Pillar Stability (ALPS) Computer Program Incorporates New Coal Mine Roof Rating (CMRR)2/1/1995 - Technology NewsThe objective of this work is to develop a comprehensive, practical method for designing longwall gate entries that considers coal pillar size, mine roof quality, and artificial support in an easy-to-use computer program.
1/1/1994 - NIOSH/USBM numbered publicationsA computer program called Analysis of Retreat Mining Pillar Stability (ARMPS) is field tested and refined in order to estimate abutment pressures developed during pillaring. It can be successfully employed to predict pillar line stability.