Sensitive vibrating wirerock bolt load gage

Journal Article · Thu Dec 01 04:00:00 EST 1977 · Trans. Soc. Min. Eng. AIME; (United States)

OSTI ID:5310611

Babcock, C O

A simple robust rock bolt load gage was tested in the laboratory to define its characteristic behavior and to obtain a measure of its performance. The gage uses three vibrating wire sensors crimped 120/sup 0/ (2.09 rad) apart into the outer surface of a hollow cylindrical steel tube. The resonant frequencies of the wires change as the gage is loaded. This change is read with a Creare meter developed for the Bureau of Mines on a previous contract to read borehole stress gage results. A statistical analysis of data obtained defines the variables influencing results.

• Research Organization: Bureau of Mines, Denver
• OSTI ID: 5310611
• Journal Information: Trans. Soc. Min. Eng. AIME; (United States), Journal Name: Trans. Soc. Min. Eng. AIME; (United States) Vol. 262:4; ISSN TMENA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420206* -- Engineering-- Mining & Drilling Equipment & Facilities-- (1980-1989)
422000 -- Engineering-- Mining & Underground Engineering-- (1980-)
COST
DESIGN
EQUIPMENT
MEASURING INSTRUMENTS
MECHANICAL VIBRATIONS
MINING EQUIPMENT
PERFORMANCE
ROOF BOLTS
STRAIN GAGES
STRESSES
WIRES