"An experimental method was developed to compare strain data for rock and rock bolts when exposed to shock waves released by blasting. During a 32-day period of experimentation, one rock sensor and four rock-bolt sensors were observed simultaneously. By their placement in the side wall of a structurally stable drift, secondary static stresses were excluded. Bolt gage responses, then, could be considered to originate only from a decay of anchorage stability during static conditions or as a reaction to the vibrations. Interpretation of test results indicated a distinct loss in bolt-strain during vibrations, accompanied by a smaller but steady loss of bolt-strain during static conditions. The strain losses were found related to the shock-source distance, the vibrational amplitudes in rock and bolts, and to the relative magnitude of vibrational energy in the two media"--Abstract, page ii.
Ash, Richard L.
Spokes, Ernest Melvern
Scott, James J.
Heagler, John B., 1924-1999
Mining and Nuclear Engineering
M.S. in Mining Engineering
University of Missouri at Rolla
ix, 88 pages
© 1965 Helmut Habenicht, All rights reserved.
Thesis - Open Access
Library of Congress Subject Headings
Anchorage (Structural engineering) -- Testing
Bolted joints -- Testing
Print OCLC #
Electronic OCLC #
Link to Catalog Record
Habenicht, Helmut W., "A study of the influence of shock waves on the stability of rock-bolt anchorage" (1965). Masters Theses. 7090.