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矿山工程结构(巷道、硐室以及露天矿边坡等)的稳定性是矿山岩体力学的主要研究内容。至今,已研究了许多判别岩体破坏的方法,也试制了很多探测仪表。现场声发射技术或钻孔中声速、衰减的量测等一类方法,可能成为以间接方式确定实地岩石的性质(力学性质)和外界条件改变时结构变化的最好方法。其原因是:(1)和其他能量形式比较,应力波可以迅速有效地在岩石内传播;(2)弹性波速度直接是岩石材料性质的函数;(3)波速或衰减的变化可以反映出应力状态
The stability of mine engineering structures (roadways, chambers and open pit slopes, etc.) is the main research content of mine rock mass mechanics. So far, many methods have been studied to determine the failure of rock mass, and many probing instruments have also been made. Field acoustic emission techniques or methods such as sound velocity and attenuation measurements in boreholes may be the best way to indirectly determine the properties of the rock in the field (mechanical properties) and structural changes as the external conditions change. The reason for this is that (1) stress waves can propagate rapidly and effectively in rocks compared to other forms of energy; (2) elastic wave velocity is directly a function of rock material properties; (3) changes in velocity or attenuation reflect stress status