北衙金矿万硐山矿段深凹露天矿边坡角的确定  

Determination of Slope Angle of Deep Open-pit in Wandongshan Section of Beiya Gold Mine

作　　者：程涌 杨八九 CHENG Yong;YANG Bajiu(Yunnan Yarong Mining Technology Co.,Ltd.)

机构地区：[1]云南亚融矿业科技有限公司

出　　处：《现代矿业》2023年第9期134-137,共4页Modern Mining

摘　　要：露天矿山边坡具有开挖地点的无选择性、时效性和岩体的可变形性、动态性等特点。在边坡稳定性研究过程中,应结合上述特点,确定经济合理的边坡角。边坡角的大小决定了露天矿山企业的经济效益,边坡角提高1°,节约剥离成本上千万元甚至上亿元。根据深凹露天矿边坡稳定性的边坡角与岩体物理力学参数之间的关系,确定了北衙金矿万硐山矿段深凹露天矿边坡角;采用数值模拟方法对该边坡稳定性进行了计算分析。2种方法所得出的结论基本一致,对矿山实际生产和设计具有一定指导作用。The open-pit mine slope has the characteristics of non-selectivity and timeliness of excava⁃tion site,deformability and dynamics of rock mass,etc.In the process of slope stability study,economic and reasonable slope angle should be determined in combination with the above characteristics.The size of the slope angle determines the economic benefits of open-pit mining enterprises.Increasing the slope angle by 1 degree can save tens or even billions of yuan in stripping costs.Based on the relationship between the stability slope angle of the deep concave slope and the physical parameters of the rock mass,the slope angle of the deep concave open-pit mine in the Wandongshan section of Beiya Gold Mine was determined.Numeri⁃cal simulation methods were used to calculate and analyze the slope stability.The conclusions obtained from the two methods are basically consistent,which has a certain guiding role for the actual production and de⁃sign of the mine.

关 键 词：深凹露天矿 边坡角 边坡稳定性 有限差分法 强度折减法 

分 类 号：TD854.6[矿业工程—金属矿开采]