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Evaluating anchorage testing methods for expansion-type mine roof bolts
Two methods of testing anchorages; load was applied to tightened bolt with hydraulic jack; electric resistance strain gages were used in all tests to indicate true bolt load as bolt was tightened and when additional load was applied with hydraulic jack.
Evaluating anchorage testing methods for expansion-type mine roof bolts
Two methods of testing anchorages; load was applied to tightened bolt with hydraulic jack; electric resistance strain gages were used in all tests to indicate true bolt load as bolt was tightened and when additional load was applied with hydraulic jack.
Evaluating anchorage testing methods for expansion-type mine roof bolts
US Bur Mines -- Report Investigations
Barry, A.J. (author) / McCormick, J.A. (author)
1960
19 pages
Report
English
© Metadata Copyright Elsevier B. V. All rights reserved.
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