【摘要】 针对厚层状粘弹性顶板下煤柱岩爆问题建立了一个简单力学模型，并据此讨论了岩爆的非稳定机制，建立了这种条件下岩爆发生的判别准则，对岩爆滞后现象给出了一种理论解释，并推出了岩爆滞后时间ｔｃ与岩爆最大滞后时间ｔｃｍａｘ的表达式。更多还原

【Abstract】 Ln the paper,a simple mechanics model for the rockburst problem of the coal pillar under the thick seam vis-coelastic roof is established.Based on it,the unstability me-chanics of rockburst is discussed and the discniminant criterionof rockburst occurrence on this condition is established.A the-oretical explanation for the phenomenon of rocklourst hystere-sis is given out.Furthermore,the expressive formulas for the hysteresis time of rockburst tc and the maximum hysteresistime of rockburst tcmax are deduced.更多还原