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Resultant Load Vector Studies on Shield Supports.

Authors
Barczak-TM
Source
Proc 21st Int Conf of Safety in Mines Res Inst Sydney Australia 1985 Oct; :5 pages
Link
NIOSHTIC No.
10004730
Abstract
The resultant load vector represents the forces applied to a longwall roof support element by caving strata as a single, quantifiable measure of support resistance. A technique has been devised whereby the resultant load vector can be determined for shield supports by instrumenting the support with pressure transducers and strain gauges to measure leg, canopy capsule, and lemniscate link forces. The method has been evaluated in the Bureau's mine roof simulator. Functional relationships among variables have been determined and confidence intervals established for predicting the resultant load vector parameters. Resultant load vector measurements for five shields on an active longwall face are consistent with shield mechanics and anticipated roof behavior.
Publication Date
19851001
Document Type
OP;
Fiscal Year
1986
NTIS Accession No.
NTIS Price
Identifying No.
OP 81-85
NIOSH Division
PRC;
Source Name
Proc. 21st Int. Conf. of Safety in Mines Res. Inst., Sydney, Australia, Oct. 1985, 5 Pp
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