岩爆倾向性的动态破坏实验研究

Experimental Study of Dynamics Damage on Rock Burst Tendency

岩石峰值强度后破坏过程的持续时间长短,反应了岩石破坏的剧烈程度和能量释放特性,也反应了岩石发生岩爆的倾向性。本文在常规单轴压缩加载条件下,测定了凡口铅锌矿几种矿岩石峰值强度后的动态破坏持续时间,并根据实验结果对岩石发生岩爆的倾向性进行了评价,其结果表明它们均具有发生岩爆的倾向性。

Rock failure duration after its peak strength reflects its failure violence and the charecteristic of energy release, and also reflects its burst proneness. Failure durations of four kinds of rock of Fankou Lead-zinc mine are tested under the normal unixial compress condition, and their burstproneness is evaluated according to the test data. And the evaluating results show that all kinds of rocks have burst proneness obviously.