Detail publikace

Estimation of Rock In-situ Stress by Acoustic and Electromagnetic Emission

MORI, Y. SEDLÁK, P. ŠIKULA, J.

Originální název

Estimation of Rock In-situ Stress by Acoustic and Electromagnetic Emission

Typ

článek v časopise - ostatní, Jost

Jazyk

angličtina

Originální abstrakt

The Kaiser Effect in acoustic emission is often used fpr an estimation of the stress to which rocks have been subjected. However, there are case in ehich the Kaiser Effect is not clear, since the noises due to contact and/or the stick slip between the pre-induced fracture surfaces are measured during loading processes. In such cases, estimationof previous stress uis difficult by the conventional method which is based on acoutic emission activity observed under loading process. In the test for the Kaiser Effect on rocks, therefore, the noises must be eliminated from the acoustic emission generated from newly created cracks during the second loading process. Such techniques as analysis of the difference between the acoustic emission activity observed in the fiorst and second reolading and the analysis of the change in sthe slope of the acoustic emission amplitude distribution have been proposed. In this paper we present a new method by which the maximum previous stress in rocks can be directly estimated without any post signal analysis. In the new method, simultaneous measurement of acoustic and electromagnetic emission during loading test of rock sample is employed.

Klíčová slova

Kaiser Effect, rock stress, electromagnetic emission

Autoři

MORI, Y.; SEDLÁK, P.; ŠIKULA, J.

Rok RIV

2006

Vydáno

19. 9. 2006

ISSN

1022-6680

Periodikum

Advanced Materials Research

Ročník

2

Číslo

13-14

Stát

Švýcarská konfederace

Strany od

357

Strany do

362

Strany počet

6

URL

http://www.scientific.net

BibTex

@article{BUT43639,
  author="Yasuhiko {Mori} and Petr {Sedlák} and Josef {Šikula}",
  title="Estimation of Rock In-situ Stress by Acoustic and Electromagnetic Emission",
  journal="Advanced Materials Research",
  year="2006",
  volume="2",
  number="13-14",
  pages="6",
  issn="1022-6680",
  url="http://www.scientific.net"
}