摘要
本文根据室内实验结果讨论了有围压条件下的岩石凯瑟效应。指出低差异应力作用下的岩石,凯瑟效应是各向独立的,即使围压发生变化(可以降低为零),其轴向加压的凯瑟效应仍反映该方向历史上承受过的最大应力值;高差异应力作用下的岩石,凯瑟效应不能各向独立,在围压发生升高或降低时(可以降低为零),其轴向加压的凯瑟效应反映历史上该方向与围压的最大差异应力,这为由室内实验(零围压)确定野外深钻孔岩芯所承受过的最大差异应力提供了方便。对于大理岩来讲,高低差异应力的分界约为10MPa。
In this paper the kaiser effect of rocks under the condition with confining
Pressure has been discussed on the basis of the experimental results in lab-
oratorg. The results show that the kaiser effect is independent in every dire-
tion when apply low difference stress on a rock, and the effect in axis pre-
ssure still reflects hislorical maximum stress. The Kaiser effect Cann't be
independent in every direction to a rock applied high difference were acted
on by stress.
出处
《防灾减灾学报》
1990年第4期47-53,共7页
Journal of Disaster Prevention And Reduction
基金
地震学联合基金 批准文号为:86-21号
