種々な岩石のAEによる初期応力推定のための基礎的考察

概要

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Our previous experimental studies showed that the initial stress in rocks estimated from the Kaiser effect of acoustic emission is not necessarily the maximum stress that the specimen is subjected to, but is correlative to the residual strain in the specimen at the time of testing. The present investigation on the characteristics of the Kaiser effect in various rocks revealed that the initial stress estimated from the Kaiser effect tended to decrease with time after coring. Thus, the experiments to estimate the initial stress existing in a rock mass by means of the Kaiser effect, must be conducted as soon as possible after coring rock samples.
社団法人日本材料学会の論文