Research on Prediction of Coal Sample Deformation Based on Acoustic-Emission Sensitive Index

Establishing the relationship between deformation of coal samples and acoustic emission response is basis for prediction samples. Using a combination laboratory tests theoretical analysis, uniaxial loading process were conducted on in study area test results analyzed, focusing rule variation counts with time. Based analysis stress, strain, time, acoustic-emission parameters variation, was established analyzed. The show that during process, characteristics stage changes, which can be divided into three stages: initial sporadic events, middle stable increase final rapid events. This division has good consistency stages Moreover, have obvious easily identifiable changes count used as sensitive indicator this to predict It provides reference application technology area, important improve accuracy geohazard prediction.