Research On Rock Slope Dynamics Damage Evolution

Under dynamic force, rock slope occur deformation, damage, and isolated mayoccur sliding, rolling, even projectile. In this paper, by the National Natural ScienceFoundation project “Mechanism of earthquake-induced complex structure slopelandslide”, first introduced the geological classification of rock slope conditions, topave the way for the future stability of rock, and then the rock slope in the dynamicstress is divided into relatively complete destruction under the continuous deformationphase and the sliding phase of obviously not continuous and there are stability problemsin each stage, according to the theory of rock mechanics system stability, form theviewpoint of energy, obtains two criterion that rock mass structure in the macroscopicdeformation process of continuous and discontinuous slip process occurs instabilityduring the two course, that dynamic instability criterion; but discusses the conditionsthat rock slope failure under the stress of moving occurs rolling and projectile, comes tothe conclusion, the necessary conditions for landslide rolling and projectile in landslidesand other geological disasters, thinks that in the process of sliding, sliding into the bodyfrom pure sliding to pure rolling nothing to do with the sliding body shape, but onlywith the contact surface friction coefficient and the slope angle of the slope, as well asthe acceleration of the sliding body; Under the dynamic role in the strong earthquake,only dynamic stress on the sliding body in the vertical direction of the force is greaterthan or equal to the gravitational of landslide, landslide may occur only projectile, so asto make the damage law of the mountain slope under the complex dynamic stress toprovide a theoretical basis for research, and further reveal the mechanism of rock massstructure evolution of the instability, not only has important theoretical significance, butalso has a wide range of practical value for the prevention and treatment of thelandslide.