完整岩石拉压应力状态下的张裂破坏准则1)
吕爱钟, 刘宜杰, 尹崇林

EXTENSION FAILURE CRITERION FOR INTACT ROCK UNDER TENSION AND COMPRESSION STRESS1)
Lü Aizhong, Liu Yijie, Yin Chonglin
图1 $\sigma_{1}$主平面的面积从$S$增大到$S+\Delta S (\sigma_{1} \geqslant \sigma _{2} \geqslant \sigma_{3} )$
Fig.1 Area of $\sigma_{1}$-plane increases from $S$ to $S+\Delta S(\sigma_{1} \geqslant \sigma_{2} \geqslant \sigma_{3} )$