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Mining Publication: Longwall Shield and Standing Gateroad Support Designs - Is Bigger Better?
Keywords: Convergence Longwall shields Support design and selection
This page is archived for historical purposes and is no longer being maintained or updated.
Original creation date: June 2007
Authors: TM Barczak, SC Tadolini
Conference Paper - June 2007
Download PDF Document (0.69 MB)
NIOSHTIC2 Number: 20032053
Proceedings of Longwall USA, Pittsburgh, Pennsylvania, June 5 - 7, 2007. Prairieville, LA: Coal Age, 2007 Jun; :1-26
Roof support systems, longwall shields in particular, have persistently grown in size and capacity for the past 25 years. Why is this? Is it a good thing or is it unnecessary? What are the consequences of this bigger-the-better design philosophy? Rarely do we see a one size fits all approach to roof support except when it comes to longwall shields, where the historical trend for new procurements is to simply purchase the highest capacity support you can buy. Does high capacity ensure failures will not occur? The answer is no! The highest capacity tailgate supports are typically the ones that fail the most often. What does this tell us? It tells us that there are fundamental aspects of support design and ground control that we still do not understand or recognize when designing a support system. This paper provides an interesting evaluation of these issues and proposes a different approach to support design that attempts to match the support performance characteristics to the ground behavior. Along the way, some of the old premises of support design will be discarded, and new controversial ideas developed. Thinking outside the box never hurt any industry. Mining has made it a common practice.
Image of publication Longwall Shield and Standing Gateroad Support Designs - Is Bigger Better?Conference Paper - June 2007
Download PDF Document (0.69 MB)
NIOSHTIC2 Number: 20032053
Proceedings of Longwall USA, Pittsburgh, Pennsylvania, June 5 - 7, 2007. Prairieville, LA: Coal Age, 2007 Jun; :1-26
See Also
Analysis of the Interaction Between Mobile Roof Supports and Mine Strata
Evaluation of Support and Ground Response as Longwall Face Advances into and Widens Pre-Driven Recovery Room
Evaluation of Tailgate Ground and Support Interaction in the Illinois Basin for the Development of a Ground Reaction Curve Based Standing Support Design
Evaluation of the Impact of Standing Support on Ground Behavior in Longwall Tailgates
A First Step in Developing Roof Support Design Criteria Based on Ground Reaction Data for Pittsburgh Seam Longwall Tailgate Support
The Impact of Ground Control Research on the Safety of Underground Coal Miners: 1910-2010
Pillar and Roof Span Design Guidelines for Underground Stone Mines
Pumpable Roof Supports: Developing Design Criteria by Measurement of the Ground Reaction Curve
A Retrospective Assessment of Longwall Roof Support with a Focus on Challenging Accepted Roof Support Concepts and Design Premises
Updating the NIOSH Support Technology Optimization Program (STOP) With New Support Technologies and Additional Design Features
Page last reviewed: September 21, 2012
Page last updated: September 21, 2012
Content source: National Institute for Occupational Safety and Health, Mining Program
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