IBJ Technology by Ultrasound
Geo- Technology
The ultrasonic borehole probe serves the mountain tension in the mountains, preferably in underground pit building in the elasto plastic mountains, for the determination for example in the salt rock.

Reversibility between stretch and upsetting
Principle: in a borehole probe over the akusto flexible effect the tension in a not convergable medium the tension is determined.
Several ultrasonic sensors in a borehole probe can measure the horizontal and vertical mountain tension in a borehole in situ.
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