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Stress-induced failures in mine roof.

Authors
Aggson-JR
Source
NTIS: PB 293 339, 1979; :1-16
Link
NIOSHTIC No.
10000881
Abstract
This Bureau of Mines report presents a finite element analysis of roof stresses associated with a 4-foot-high by 18-foot-wide underground coal mine entry. This analysis starts with known loading conditions determined in an underground coal mine in West Virginia and is extended to other possible underground loading conditions. The roof failures predicted by the finite element analysis under known loading conditions correlate well with the roof failures observed underground. The most probable failure modes are identified for the various loading conditions considered. Various failure preventive measures are discussed.
Keywords
Mining-industry; Failure-analysis; Structural-analysis; Stress; Force; Coal-mining; Underground-mining
Publication Date
19790101
Document Type
IH; Report of Investigations
Fiscal Year
1979
NTIS Accession No.
PB-293339
NTIS Price
A03
Identifying No.
RI 8338
NIOSH Division
DRC
Source Name
NTIS: PB 293 339
State
CO; WV
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