Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

NIOSHTIC-2 Publications Search

Search Results

Standing support alternatives in western United States longwalls.

Authors
Barczak-TM; Tadolini-SC
Source
Min Eng 2006 Feb; 58(2):49-55
NIOSHTIC No.
20029584
Abstract
Mines in the Western United States have had limited choices for standing support. Wood cribs were often too soft and unstable. The introduction of the Can support in the early 1990s provided an effective alternative, and it remains the dominant form of tailgate support. Water-filled prestressing cells are now used to cap the Can and preload it to provide an active roof load. The Cluster Prop, consisting of three timber wedge props bundled together, provides more capacity than an equivalent-sized Can support and improves transport efficiency. However, the Cluster Prop is less stable and does not maintain a consistent load throughout its loading profile. Pumpable roof supports are another alternative support, but they have not been proven in high-deformation environments. This article compares the performance characteristics of these various support systems.
Keywords
Longwall-mining; Ground-control; Ground-stability; Coal-mining; Underground-mining; Injuries; Safety-research; Hazards; Engineering; Engineering-controls; Control-technology
Contact
NIOSH Pittsburgh Research Laboratory, P.O. Box 18070, Pittsburgh, PA 15236
CODEN
MIENAB
Publication Date
20060201
Document Type
Journal Article
Fiscal Year
2006
NTIS Accession No.
NTIS Price
Issue of Publication
2
ISSN
0026-5187
NIOSH Division
PRL
Priority Area
Research Tools and Approaches: Control Technology and Personal Protective Equipment
Source Name
Mining Engineering
State
PA; UT; GA; VA
TOP