Masters Theses

Abstract

"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.

Advisor(s)

Ash, Richard L.

Committee Member(s)

Spokes, Ernest Melvern
Scott, James J.
Heagler, John B., 1924-1999

Department(s)

Mining Engineering

Degree Name

M.S. in Mining Engineering

Publisher

University of Missouri at Rolla

Publication Date

1965

Pagination

ix, 88 pages

Note about bibliography

Includes bibliographical references (pages 44-45).

Rights

© 1965 Helmut Habenicht, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Subject Headings

Anchorage (Structural engineering) -- TestingRock boltsBolted joints -- TestingBlastingShock waves

Thesis Number

T 1717

Print OCLC #

5964499

Electronic OCLC #

851387692

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