中文摘要：

以青海松树南沟矿区连续的三台阶边坡为概化模型,运用有限元软件,探讨了广义Hoek-Brown强度准则参数对节理控制性岩质边坡稳定性的影响,结果表明：岩块单轴抗压强度与三台阶边坡最小稳定系数呈近乎线性增长关系;三台阶边坡最小稳定系数与GSI值呈指数增长关系;当GSI值等于53时,随着m值的增大,三台阶边坡最小稳定系数不变,当GSI值大于53时,随着m值的增大,三台阶边坡最小稳定系数减小,相同的m值,GSI值越大三台阶边坡最小稳定系数越大。结合野外调查和室内实验成果,使用有限元软件,运用广义Hoek-Brown强度准则分析了青海松树南沟矿区西南剖面节理控制性岩质边坡的稳定性,证实其不存在大规模崩塌、滑移问题;台阶边坡底部会出现应力集中现象;应该加强开挖边坡开口线附近位置第四系区域台阶边坡的监测与支护。

英文摘要：

Taking the three continuous steps slopes of Songshu Nangou mining area in Qinghai as the generalized model,the influence of generalized Hoek-Brown strength criterion parameters on the stability of joint controlled rock slope was discussed by using finite element software.The results showed that rock uniaxial compressive strength almost presented a linear growth relationship with the minimum stability coefficient of the three steps slopes,and the minimum stability coefficient of three steps slopes presented an exponential growth relationship with the GSIvalue.When the GSIvalue was 53,the minimum stability coefficient of slopes with three steps was a constant with the increase of m value.When the GSIvalue was more than 53,the minimum stability coefficient of slopes with three steps reduced along the increase of m value.And when the m value was the same,the minimum stability coefficient of the slopes with three steps increased with the increase of GSI value.Combined with field investigation and indoor experiment results,the stability of joint controlled rock slope was analyzed by applying the generalized Hoek-Brown strength criterion and the finite element software in the southwest profile of Qinghai Songshu Nangou mining area.It proved that there were no problems of large-scale collapse and slippage,and the phenomenon of stress concentration would appear at the bottom of bench slope.So the monitoring and supporting of bench slope in quaternary region should be strengthened near the excavation slope＇s opening line.