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Stability analysis of entries in a deep coal mine using finite element method.

Authors
Park-DW; Ash-NF
Source
Min Sci Technol 1985 Oct; 3(1):11-20
NIOSHTIC No.
10005283
Abstract
Strain-softening behavior of rock and coal layers around a coal mine opening was simulated using a quasi-elastic approach, which accounts for residual strength after failure. This simulation was achieved in such a way that material values were modified after each run, according to stress distribution, until the simulation reached an equilibrium condition, MSC/NASTRAN Finite Element Method program was used for the simulation. The effect of a yield pillar system was analyzed in comparison with a regular pillar system. The results agreed with the field measurement in terms of stress distribution and floor heave.
Keywords
Mining-industry; Underground-mining; Coal-mining; Simulation-methods
CODEN
MSTEEV
Publication Date
19851001
Document Type
OP; Journal Article
Fiscal Year
1986
NTIS Accession No.
NTIS Price
Identifying No.
MIR 2-86
Issue of Publication
1
ISSN
0167-9031
NIOSH Division
WO
Source Name
Mining Science & Technology
State
DC; AL
Performing Organization
University of Alabama
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