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Double fracture method ofin situ stress measurement in brittle rock

Serata, S. / Sakuma, S. / Kikuchi, S. / Mizuta, Y.

Summary A new technique, the Double Fracture Method ofin situ stress measurement, is described with regard to its theoretical principles and field instrumentation. The method differs from the hydraulic fracture method in that the loading fluid is prevented from penetrating into the induced fractures. In the new method, the loading pressure is raised to create a set of two mutually perpendicular microfractures on the borehole boundary. The principal stresses and their orientation in the plane normal to the borehole can be deduced from the diametral deformation of the borehole. Laboratory and field measurements validating the method are discussed.

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Double fracture method ofin situ stress measurement in brittle rock

Serata, S. / Sakuma, S. / Kikuchi, S. / Mizuta, Y.

Summary A new technique, the Double Fracture Method ofin situ stress measurement, is described with regard to its theoretical principles and field instrumentation. The method differs from the hydraulic fracture method in that the loading fluid is prevented from penetrating into the induced fractures. In the new method, the loading pressure is raised to create a set of two mutually perpendicular microfractures on the borehole boundary. The principal stresses and their orientation in the plane normal to the borehole can be deduced from the diametral deformation of the borehole. Laboratory and field measurements validating the method are discussed.

Double fracture method ofin situ stress measurement in brittle rock

Serata, S. / Sakuma, S. / Kikuchi, S. / Mizuta, Y.

Summary A new technique, the Double Fracture Method ofin situ stress measurement, is described with regard to its theoretical principles and field instrumentation. The method differs from the hydraulic fracture method in that the loading fluid is prevented from penetrating into the induced fractures. In the new method, the loading pressure is raised to create a set of two mutually perpendicular microfractures on the borehole boundary. The principal stresses and their orientation in the plane normal to the borehole can be deduced from the diametral deformation of the borehole. Laboratory and field measurements validating the method are discussed.

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Title:

Double fracture method ofin situ stress measurement in brittle rock

Contributors:

Serata, S. (author) / Sakuma, S. (author) / Kikuchi, S. (author) / Mizuta, Y. (author)

Published in:

Rock Mechanics and Rock Engineering ; 25

Publication date:

1992

ISSN:

DOI:

https://doi.org/10.1007/BF01040514

Type of media:

Article (Journal)

Type of material:

Print

Language:

English

Keywords:

Zeitschrift , Gebirgsmechanik

Classification:

Local classification TIB: 560/4815/6545
BKL: 38.58 Geomechanik / 56.20 Ingenieurgeologie, Bodenmechanik

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