Measuring the strength of a rock formation in situ

Details Measuring the strength of a rock formation in situ Measuring the strength of a rock formation in situ

1975-11-28

1976-11-23

Gill, James J.

Measuring and testing

Ductility or brittleness

G01N 310

Patent

active

039929280

ABSTRACT:
Two hollow cylinders of rock are formed in the rock formation to be tested. A pressure ring is applied to the interior of one of the hollow cylinders of rock, and the ring is pressurized until the cylinder fractures, the highest value of the pressure being recorded as a measure of the tensile strength of the rock. A pressure ring is applied to the exterior of the other hollow cylinder of rock, and the ring is pressurized until the cylinder fractures, the highest value of the pressure being recorded as a measure of the compression strength of the rock.

REFERENCES:
patent: 3457778 (1969-07-01), Gill et al.

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