Design practices for multiple-seam longwall mines
Conference
·
OSTI ID:171669
- Bureau of Mines, Pittsburgh, PA (United States)
Effective longwall mine design is essential for avoiding ground problems related to multiple-seam interactions. The U.S. Bureau of Mines, as part of its mission to improve coal conservation and utilization, is investigating longwall panel and gate road layouts to increase coal recovery and reduce multiple-seam interactive problems. This report presents recommended design practices for longwall mining multiple seams. Its objective is to provide mine planners and operators with practical guidelines and information for productive longwall mines. The key aspects of mine design that control multiple-seam longwall interactions are examined. These include the sequencing of seams, the design of the gate road pillars, and the orientation of the gate roads and longwall panels. Theories that describe stress transfer between multiple-seams and the mechanics of interaction are addressed in relation to geology.
- OSTI ID:
- 171669
- Report Number(s):
- CONF-9506114--
- Country of Publication:
- United States
- Language:
- English
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