Longwall shield design: is bigger better?

Journal Article · Thu May 15 00:00:00 EDT 2008 · Coal Age

OSTI ID:21073731

Barczak, T M; Tadolini, S C ^[1]

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1. NIOSH-PRL, Pittsburgh, PA (United States)

This article evaluates the bigger is better design philosophy for longwall shields. The conventional support design approach based on simplistic models of supporting the full dead weight detached rock masses is replaced by a ground reaction design approach. Here, the goal is to match the support characteristics to the ground response, and not to try and overpower the ground forces with some massive support capability. The ground reaction concept embodies both the force and displacement controlled loading aspects, and therefore provides a more accurate representation of the support loading requirements. 7 figs.

• OSTI ID: 21073731
• Journal Information: Coal Age, Vol. 113, Issue 5; ISSN 0009-9910
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
LONGWALL MINING
SHIELD SUPPORTS
SIZE
STRATA CONTROL
DESIGN
YIELD STRENGTH