Method of determining gas leakage through a mine stopping

Details Method of determining gas leakage through a mine stopping Method of determining gas leakage through a mine stopping

1978-11-28

1979-11-06

Goldberg, Gerald

Measuring and testing

With fluid pressure

Leakage

G01M 320

Patent

active

041731417

ABSTRACT:
A method of determining the gas leakage through a mine stopping. The mine stopping, whose leakage is to be measured, is set up in a mine. Next, a test barrier is set up in the mine adjacent to the stopping. The volume between these two structures forms a closed test chamber filled with ambient gas. A known trace gas different from the ambient gas or a known contaminating gas is introduced into the chamber and mixed therein. Thereafter, periodic measurements are made of the rate of change in concentration of the tracer gas. Lastly, based upon the measured rate of change in concentration of the tracer gas, the leakage past the mine stopping is determined.

REFERENCES:
patent: 4055074 (1977-10-01), Thimons et al.

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