黑山露天矿底帮边坡留煤柱设计分析  

Design and analysis of coal pillar for bottom slope in Heishan Open-pit Mine

作　　者：刘月亭 吕文伟 张禹 LIU Yueting;LYU Wenwei;ZHANG Yu(Ha’erwusu Open-pit Coal Mine,China Energy Group Zhunge’er Energy Co.,Ltd.,Ordos 010300,China)

机构地区：[1]国家能源集团准能公司哈尔乌素露天煤矿,内蒙古鄂尔多斯010300

出　　处：《露天采矿技术》2021年第6期93-95,99,共4页Opencast Mining Technology

摘　　要：针对黑山露天矿底帮到界边坡形态设计问题,结合露天开采经济要求,通过岩层分布、岩石物理力学性质及弱层赋存情况等工程地质特征进行分析,采用简化Bishop法和剩余推力法计算边坡稳定性系数,运用不同设计方案间剥离物和煤量的比值分析。结果表明:潜在滑坡模式是圆弧为侧界面、弱层为底界面的切层-顺层滑动,边坡留煤柱设计方案合理可行。Aiming at the shape design problem of bottom slope in Heishan Open-pit Mine,combined with the economic requirements of open-pit mining,the article analyzes the engineering geological characteristics such as rock stratum distribution,rock physical and mechanical properties,and occurrence of weak layers,uses simplified Bishop method and residual thrust method to calculate the slope stability coefficient,analyzes the ratio of stripping and coal quantity between different design schemes.The results show that:the potential landslide mode is the slice-bedding sliding with arc as the side interface and weak layer as the bottom interface,and the design scheme of slope coal pillar is reasonable and feasible.

关 键 词：弱层 BISHOP法 剩余推力法 滑坡模式 留煤柱设计 

分 类 号：TD824.7[矿业工程—煤矿开采]