METHOD AND DEVICE FOR MEASURING STRAIN-STRESS STATE OF ROCK MASSES AND BUILDINGS Russian patent published in 2012 - IPC G01M7/02 

FIELD: mining.

SUBSTANCE: loaded tested object is subjected to elastic oscillations and then the object's state is determined. The measurement volume is created in advance inside the tested object, the properties characterising the volume are recorded, and as they change the change of strain-stress state is determined. The emission of micro- and nano-size mineral particles is used as a measure of strain-stress state of the tested subject. The device for measuring the stress-stain state of rock masses and buildings comprises an elastic oscillations generator, a measuring appliance and a probe placed inside the measurement volume. An aerosol particle sensor is used as the measuring appliance. The probe is made in the form of two sampling tubes, furthermore, an air filter is installed on the input of the first sampling tube, and the output of the second sampling tube is connected to the input of the aerosol particle sensor.

EFFECT: accuracy and reliability of stress-strain state measurements for rock masses and buildings.

3 cl, 2 dwg