Borehole Pressure Cell

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Borehole Pressure Cells have a long term track record of stress monitoring in both elastic and viscoelastic rock.

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Overview

Borehole Pressure Cells have a long term track record of stress monitoring in both elastic and viscoelastic rock. Product development is largely the result of research done by the U.S. Bureau of Mines (Panek & Stock 1964, and Smith 1972).

Cells are available in two basic configurations, a miniature flatjack version (BPC) and a cylindrical pressure cell (CPC). Due to the flat design, the BPC responds primarily to the stress in the plane perpendicular to the cell, and is only slightly affected by stress in the same plane. Two BPC’s mounted at right angles to each other in the same borehole therefore will monitor the principal stresses in the plane perpendicular to the borehole. Biaxial stress measurement will require three BPC’s in the same borehole.

While not appropriate for anisotropic stress conditions, the CPC will measure the average change in the principal stresses in the plane perpendicular to the borehole.


BOREHOLE PRESSURE CELL SPECIFICATIONS

ITEM SPECIFICATION
Material Stainless steel
Range 0 – 10,000 PSI (0 – 70 Mpa)
Sensitivity with Gauge Readout 40 PSI (300 kPa)
Accuracy with Gauge Readout 1%
Dimensions 508 (L) x 50 (W) x 9.53 (D) mm

 

Borehole Pressure Cells are commonly used to monitor stress in elastic and viscoelastic rock.

Borehole Pressure Cells Ordering Info

ITEM PART #
Borehole Pressure Cell with Vibrating Wire Transducer BPC001-VW
OPTIONAL: Borehole Pressure Cell Encapsulation BPC001-E
1/8” diameter High Pressure SS Tube BPC001-T
Signal Cable EL380004

 

Installation Tools

ITEM PART #
NON-ENCAPSULATED Head Adapter with Orientation Handle BPC300
NON-ENCAPSULATED 1.5 m Rod BPC310
ENCAPSULATED Rod Adapter BPC200
ENCAPSULATED 1.5 m Rod BPC210

File Name

Borehole Pressure Cells

Resource Type

Brochure
Language Version Download
English LPB0007G
Spanish LPB0021B

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I’m very happy with the quality of the instrumentation and technical support from RST, as always. They worked with us from the initial stages of the project to ensure that we were fully prepared and equipped to use the RSTAR network for the first time. They delivered everything within the tight project time frame to ensure that there were no delays on site, and the submersible tilt meters looked like new even after over twelve months of being submerged in Thames water!
 
-Richard Lipscombe, BEng (Hons), Director & Principle Consultant - RL Geotechnical Ltd