Cảm biến đo ứng suất hố khoan Geokon 4300

 

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The Model 4300 Vibrating Wire Borehole Stressmeters are designed to measure stress changes in rock and can be installed in boreholes up to 100 feet deep. The Stressmeter consists of a high strength steel proving ring wedged tightly across one diameter inside a borehole and a vibrating wire tensioned across the other diameter inside the stressmeter. Changes in rock stress cause a related change in the resonant frequency of vibration of the tensioned wire providing output which is read by the Model GK-404 or Model GK-405 Vibrating Wire Readouts.

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