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Gateroads With Yield Pillars for Stress Control.

Authors
Tadolini-SC; Haramy-KY
Source
Proc 4th Conf on Ground Control for Midwestern U S Coal Mines So IllinoisUniv PP 179-194 :179-194
Link
NIOSHTIC No.
10011531
Abstract
Ground control problems associated with deep coal mines have increased interest in the design of longwall gateroads using yielding pillars. This paper presents a discussion of the yield pillar theory and assesses the stability of gateroads with yield pillar configurations. Case studies were conducted by the U.S. Bureau of Mines in two underground longwall mines using two- and three-entry yielding chain pillar configurations. Analysis indicates that gateroad design using yield pillars can result in less stress concentrations in the entries and may reduce or eliminate some stress-related problems.
Publication Date
19920101
Document Type
OP;
Fiscal Year
1992
NTIS Accession No.
NTIS Price
Identifying No.
OP 302-92
NIOSH Division
DRC;
Source Name
Proc. 4th Conf. on Ground Control for Midwestern U.S. Coal Mines; So. Illinois Univ., PP. 179-194
State
IL;
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