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4 $\pi'$平面上的屈服曲线[21]
Fig.4 Yield curves on $\pi'$-plane[21]