中文摘要：

锦丰金矿露天边坡岩体复杂破碎,东南西北4个方位的边坡均出现了不同程度的滑坡等破坏情况。为保证安全高效生产,实现陡帮开采,对开采过程中露天边坡的稳定性进行了数值模拟研究,分别在数值模型的坑底、东部边坡与西部边坡各设置3个点位,通过对比其三维空间上的位移情况,发现西部边坡受采动影响较大。建议着重加强对西部边坡的加固与支护,并采用重力挡土墙对其进行护坡;对挡土墙的墙体及抗滑桩相关参数进行了计算,设计并选定在西部边坡660~640 m水平段较为破碎的边坡处建设了挡土墙。结果表明：水平方向上,在保证墙体上部线载荷不低于782 k N/m、底部线载荷不低于160 k N/m且抗滑桩抗剪线载荷不低于471 k N/m的情况下施工挡土墙,其抗倾覆稳定系数与抗滑动稳定系数均大于挡土墙建设的安全标准,能够满足陡帮开采护坡的设计要求。

英文摘要：

The slope rock mass of Jinfeng Gold Mine is complex and fractured. It＇s different levels of landslides have oc- curred in the slopes of all directions. To ensure a safe, efficient and steep slope mining, numerical simulation on stability of slopes being mined was proposed. To investigate the slope displacement under mining disturbance ,3 spots were set in the bot- tom, east and west of the numerical slope model respectively. It is found that the west slope was greatly influenced by mining through contrasting the 3 spots displacement from the 3D space. It was suggested to make main reinforcement and support for the west slope and protect the slopes by gravity retaining wall support. Related parameters of the retaining wall and slide-resist- ant piles were calculated. Then it is designed that the retaining wall be founded in the fractured area of the west 660 ~ 640 m RL slope. The results show that in the horizontal direction,the retaining wall can answer the requirement of protecting a steep slope mining when constructed as that linear load of the upper and lower wall is higher than 782 kN/m and 160 kN/m respec- tively, while shear linear load of the slide-resistant piles is higher than 471 kN/m. Under such circumstances, stability coeffi- cient of anti-dump and anti-slide of the retaining wall are both greater than the retaining wall construction safety standards.