CSIRO Hollow Inclusion Cell Rock Stress Sensor

The Hollow Inclusion Cell (HI Cell) rock stress sensor is an extremely precise geotechnical instrument specifically designed for in-situ monitoring of 3-D rock stress.

HI Cells can be permanently fixed within a borehole to provide real-time indications of strain and temperature.

Geosystems HI Cells are based on the original CSIRO design but with upgraded features that eliminate the need for expensive multi-strand cables. We are constantly developing and improving the design making Geosystems the best one-stop-shop for 3D in-situ stress measurement instruments and systems.

 

DATA SHEET FOR DIGITAL HOLLOW INCLUSION (HID) CELL

Description

Digital Hollow Inclusion (HID) Cell

The HID Cell is a highly accurate rock stress sensor that is built upon the analogue Hollow Inclusion Cell (HI Cell).

Designed to be permanently fixed within a borehole, the HID Cell digitises the strain measured at the gauges, rather than at the end of a multi-strand cable. Consequently, the signal is not degraded and no special loggers are needed.

The serial output can be sent to either a computer, laptop, or logger as required.

Geosystems can supply a data logger capable of acquiring real-time data from up to four HID Cells. The data is saved to a simple CSV file on a USB stick.

DATA SHEET FOR DIGITAL HOLLOW INCLUSION (HID) CELL

Hollow Inclusion (HI) Cell – Analogue

The Geosystems Hollow Inclusion (HI) Cell reliably and accurately determines the triaxial stress in rock and concrete. it is suitable for boreholes in tunnels and other structures.

The HI Cell analogue rock stress sensor required a strain bridge to monitor the read values. We usually advise the use of our digital HI Cell that uses a breakout box and tablet for data logging.

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