测定岩爆岩石弹性变形能量指数的新方法
来源期刊：中国有色金属学报1998年第2期
论文作者：冯涛 潘长良 王宏图 曹平 王文星
文章页码：352 - 355
关键词：岩爆 应力 弹性应变能指数 弹性波
Key words：rockburst stress , elastic strain energy index , elastic wave
摘 要：对描述岩爆倾向的弹性变形能量指 数W ET进行了研究。岩石超声检测试验表明， 在单轴压缩条件下， 岩石试样中弹性波传播速度发生明显变化的特征区间，正好与其强度的80%左右的应力水平具有良好的对应关系，并据此提出了利用弹性波速度变化来控制卸载时机， 达到更准确测定W ET的新试验方法。 这一方法，较好地克服了由于岩石力学性质离散度大对W ET测定准确性的限制。
Abstract: The elastic strain energy index (W ET ) for describing rockburst tendency was studied. The ultrasonic measurements for rock samples under uniaxial compression showed that there is a good correspondence between the feature zone that the velocity of elastic wave is evidently changed and the stress level that about 80% of the rock's compression strength. Based on the conclusion, a new experimental method for determining WET was proposed, which can conquer the limit to accuracy of W ET resulting from the dispersion ratio of rock mechanical properties.
