一、引言到目前为止,一般认为莫尔强度理论能较全面地反映岩石强度的特点。该理论认为:在受力状态下的岩石,当某一截面上的剪应力达到了岩石的抗剪强度时,则岩石的该截面被剪坏。所以,莫尔强度理论实质上也是剪应力强度理论。与其它强度理论相比,虽说也存在一定的缺点,但大量的试验资料证明,用它来解释岩石的破坏现象,还是比较接近实际的。 I. INTRODUCTION So far, it is generally believed that the Moiré strength theory can more fully reflect the characteristics of rock strength. The theory holds that in rock under stress, when the shear stress on a section reaches the shear strength of the rock, the section of the rock is cut off. Therefore, the Moiré strength theory is essentially the shear stress strength theory. Compared with other strength theories, although there are also certain shortcomings, a large number of experimental data prove that using it to explain the rock damage phenomenon is still relatively close to reality.