Classification of Rock Burst Tendency Based on Uncertainty Measurement Theory

Abstract

Based on the uncertainty measurement theory and entropy weight method, the classification model for rock burst tendency of coal was established. Four indexes were selected as evaluation indexes, i.e., the dynamic failure time (DT), the elastic energy index (WET), the impact energy index (KE) and the uniaxial compressive strength (RC).The weight coefficients of above four evaluation indexes were calculated by the entropy theory. Finally, the model of rock burst tendency classification based on the uncertainty measurement theory was applied to the classification of five different coal samples. Compared with the comprehensive evaluation method and fuzzy comprehensive method, the results show that the uncertainty measurement model has excellent performance and high accuracy prediction, which proves that this method used to classify the rock burst tendency of coal is reasonable and effective.