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Keywords: pilot hole
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Proceedings Papers

Paper presented at the 43rd U.S. Rock Mechanics Symposium & 4th U.S. - Canada Rock Mechanics Symposium, June 28–July 1, 2009
Paper Number: ARMA-09-131
... Abstract The theory and a prototype tool were developed for pilot hole wall deformation ,measurement. This is a 3- dimensional stress measurement method based on the stress relief principle. A pilot hole is drilled from the bottom of a borehole and the stress measurement probe is inserted...
Proceedings Papers

Paper presented at the The 31st U.S. Symposium on Rock Mechanics (USRMS), June 18–20, 1990
Paper Number: ARMA-90-0413
... metals & mining reservoir geomechanics Upstream Oil & Gas resin potash pilot hole circumferential gauge borehole stress relief curve overcore gauge creep Newcastle upon Tyne stress measurement HI cell stress relief principal stress installation strain rate University Magnitude...
Proceedings Papers

Paper presented at the The 23rd U.S Symposium on Rock Mechanics (USRMS), August 25–27, 1982
Paper Number: ARMA-82-157
... with the influence of rock anisotropy on in-situ stress measurements. It is limited to stress measurements by overcoring techniques for which strains and displacements are recorded either on the walls of a pilot hole at the end of one or several boreholes or within instrumented solid or hollow inclusions perfectly...

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