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Design practices for multiple-seam longwall mines.

Authors
Chekan-GJ; Li-JM
Source
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, IC 9360, 1993 Jan; :1-35
Link
NIOSHTIC No.
10012175
Abstract
Key aspects of mine design that control longwall interactions are examined, including sequencing of seams, design of gate road pillars, and orientation of gate roads and longwall panels. Theories that describe stress transfer between multiple seams and the mechanics of interaction are addressed in relation to geology. Common longwall designs were further investigated using a boundary element model, MULSIM/NL. The model provided insight into relative stress transfer and distribution that occurs between longwall operations in multiple seams.
Keywords
Design-criteria; Mathematical-models; Coal-seams; Overburden; Subsidence; Longwall-mining; Caving-mining; Coal-mining; Underground-mining
Publication Date
19930101
Document Type
Information Circular
Fiscal Year
1993
NTIS Accession No.
PB94-113545
NTIS Price
A03
Identifying No.
IC-9360
NIOSH Division
PRC
Source Name
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, IC 9360
State
PA
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