【摘要】 通过对岩石受力破坏过程的声发射试验,研究了岩石破坏全过程的声发射特征,包括声发射与时间、声发射与应力水平之间的关系。研究表明,岩石声发射事件率在不同应力水平的变化很大;岩石在接近峰值强度时单位时间内的应力增长速度减小、声发射事件率出现明显下降。更多还原

【Abstract】 Through the medium of the acoustic emission test for the failure process of rock in the state of stress, the characteristics of acoustic emission in the whole process of rock failure was researched, including the relation of acoustic emission with time/stress level. It was shown that the rate of acoustic emission event at different rock stress level changed greatly; At the time when the rock strength approached to the peak value, the increasing velocity of stress in unit time reduced and the rate of acoustic emission event decreased obviously.更多还原