PREDICTION OF FAILURE IN ROCK MASSES BY ACOUSTIC EMISSION

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概要

• 論文の詳細を見る

• When constructing large caverns such as the one used for an underground powerhouse, it is of extreme importance to assure the stability of the cavern.As one of the techniques for stability monitoring, uniaxial compression tests were performed in various rocks and acoustic emission(AE) activity was measured.From the examinations of AE activity and the maximum amplitude of a single event, two types of AE occurrence patterns and three types of m-value variations were found.When predicting failure modes by means of AE, it is thought that the total AE counts and the m-value can be useful for non-homogeneous rocks.On rocks of schistose or very homogeneous structures, the total AE counts provide useful information on failure prediction but the m-value does not.Furthermore, from the results of spectral analysis of AE signal waves measured, it is found that the dominant frequency increases with increasing load.

• 社団法人日本材料学会の論文
• 1997-06-15

著者

• Fujiwara Toshio

  Technical Research Institute Obayashi Corporation

• Hata Koji

  Technical Research Institute Obayashi Corporation

• MICHIHIRO Kazutoshi

  Department of Civil Engineering, Setsunan University

• YOSHIOKA Hisaya

  Technical Research Institute, Obayashi Corporation

• Michihiro Kazutoshi

  Department Of Civil Engineering Setsunan University

• Yoshioka Hisaya

  Technical Research Institute Obayashi Corporation

関連論文

• PREDICTION OF FAILURE IN ROCK MASSES BY ACOUSTIC EMISSION

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