破裂临界状态下大理岩的剪切波分裂特征

以山东莱州大理岩为样品对岩样在破裂临界状态下的剪切波分裂特征进行了观测和分析，在两个样品上，得到破裂临界状态下的系列记录，结果表明，在岩石崩溃之前的临界状态下，即使载荷不变，剪切波分裂时间延迟也可能会有涨落现象，即剪切波分裂时间延迟可能会有一个下降的过程。

Shear-wave Splitting Patterns of Marbles in Critical State of Rupture

This paper mainly observes and analyzes the shear\|wave splitting patterns while sample rocks are in the critical state of rupture. Sample rocks are Laizhou marbles of Shandong, China. A sequence of recordings is obtained in the critical state of rupture, respectively from two sample rocks. The result shows that there is possibly fluctuation phenomenon for the time delay of shear\|wave splitting, in the critical state of rupture before rock crumbles, even though the load keeps constant. That is, possibly there is a falling process for the time delay of shear\|wave splitting before crumbling.