Method of determining mine roof stability

Details Method of determining mine roof stability Method of determining mine roof stability

1978-12-13

1982-03-09

Myracle, Jerry W.

Measuring and testing

Specimen stress or strain, or testing by stress or strain...

Threaded fastener stress

73579, F16B 3102

Patent

active

043183026

ABSTRACT:
A method and apparatus for determining the tension of mine roof bolts and/or mine roof stability which utilizes the natural vibration frequency of the seated roof bolt and/or roof structure to provide indication of bolt tension and/or roof stability.

REFERENCES:
patent: 2549076 (1951-04-01), Gallagher et al.
patent: 4150576 (1979-04-01), Tarpley, Jr.

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