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Solid-inclusion borehole probe to determine three-dimensional stress changes at point in Rock Mass

Nichols, Jr., T.C. / Abel, Jr., J.F. / Lee, F.T.

In order to relate changing stress conditions within rock masses to geologic factors, welded high-modulus solid-inclusion borehole probe to determine three-dimensional stress changes at point in rock mass was developed and tested; probe consists of 1 in. diam chrome alloy steel ball, mounted with three strain-gage rosettes, and is encapsulated in filled waterproof epoxy; reliability of probe is established by conducting series of tests in which probe was subjected to changing hydrostatic and triaxial stress fields; in all these tests probe responded as predicted by elastic theory. (03771)

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Solid-inclusion borehole probe to determine three-dimensional stress changes at point in Rock Mass

Nichols, Jr., T.C. / Abel, Jr., J.F. / Lee, F.T.

In order to relate changing stress conditions within rock masses to geologic factors, welded high-modulus solid-inclusion borehole probe to determine three-dimensional stress changes at point in rock mass was developed and tested; probe consists of 1 in. diam chrome alloy steel ball, mounted with three strain-gage rosettes, and is encapsulated in filled waterproof epoxy; reliability of probe is established by conducting series of tests in which probe was subjected to changing hydrostatic and triaxial stress fields; in all these tests probe responded as predicted by elastic theory. (03771)

Solid-inclusion borehole probe to determine three-dimensional stress changes at point in Rock Mass

Nichols, Jr., T.C. / Abel, Jr., J.F. / Lee, F.T.

In order to relate changing stress conditions within rock masses to geologic factors, welded high-modulus solid-inclusion borehole probe to determine three-dimensional stress changes at point in rock mass was developed and tested; probe consists of 1 in. diam chrome alloy steel ball, mounted with three strain-gage rosettes, and is encapsulated in filled waterproof epoxy; reliability of probe is established by conducting series of tests in which probe was subjected to changing hydrostatic and triaxial stress fields; in all these tests probe responded as predicted by elastic theory. (03771)

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Title:

Solid-inclusion borehole probe to determine three-dimensional stress changes at point in Rock Mass

Additional title:

U S Geol Surv Bull

Contributors:

Nichols, Jr., T.C. (author) / Abel, Jr., J.F. (author) / Lee, F.T. (author)

Published in:

United States Geological Survey Bulletin

Publication date:

1968

Size:

28 pages

Type of media:

Report

Type of material:

Print

Language:

English

Keywords:

© Metadata Copyright Elsevier B. V. All rights reserved.

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