In rock slope engineering,the release of internal stress within the rock mass can induce fractures and disturbances,especially during blasting operations,where these disturbance effects are particularly pronounced.Considering the impact of rock mass disturbances,this study systematically evaluates the influence of disturbance factors and slope angles on the potential sliding surface and stability of slopes using the Hoek-Brown failure criterion,finite element method,and limit analysis method.The results indicate that disturbance factors and slope angles significantly affect the stability of rock slopes,especially in slopes with poorer rock quality,where this impact is more pronounced;The disturbance level may be considered constant or vary linearly along the slope.Ignoring the impact of rock mass disturbances in stability assessments may lead to overestimation of the stability factor;Under different disturbance factors,the upper plastic zone of the cut rock slope and the failure surface of the homogeneous slope(D=constant)are shallower;The top of the failure surface moves closer to the slope from the crest,but the failure mode remains toe failure of the slope.Simply reducing the slope angle does not ensure slope stability;In the evaluation of rock slope stability,the role of disturbance factors must be comprehensively considered.
关键词
Hoek-Brown破坏准则/切岩边坡/稳定性系数/岩体扰动
Key words
Hoek-Brown failure criterion/cut rock slope/stability coefficient/rock mass disturbance
维普
万方数据