安太堡露天矿边坡稳定性研究

Study on slope stability of Antaibao Open-pit Mine

针对平朔集团安太堡露天矿区边坡的实际情况,采用工程地质勘察、力学参数研究、数值分析、极限平衡分析、监测数据分析以及边坡稳定分区等相结合的研究方法。在工程地质勘察的基础上建立工程地质模型,以内排土场为研究对象,结合现场实际情况,内排土场布置5个剖面。通过剖面实测对地质模型进行修正,应用FLAC^(3D)数值模拟软件研究边坡变形破坏机理与破坏模式,运用GEO-SLOPE和STAB等极限平衡软件计算边坡稳定性系数并分析边坡的稳定性,计算了内排土场边坡在不同形态条件下的稳定性,确定出能满足安全系数的边坡形态,为露天矿边坡治理奠定了坚实的基础。

In view of the actual conditions of the slope in Pingshuo Antaibao Open-pit Mine,this article mainly adopts the research methods of engineering geological investigation,mechanical parameters study,numerical analysis,limit equilibrium analysis,monitoring data analysis and slope stability division.The engineering geological model is set up on the basis of the engineering geological survey,and the inner dump is the research object,and the5sections are arranged in the inner dumping ground in combination with the actual situation.The geological model is corrected by the profile measurement,and the FLAC3D numerical simulation software is used to study the failure mechanism and failure mode of slope deformation.The stability coefficient of slope is calculated and the stability of slope is analyzed by using the limit equilibrium software GEO-SLOPE and STAB and the stability of the slope under different conditions is calculated.The slope shape that can meet the safety factor can be determined,which lays a solid foundation for slope treatment in open-pit mines.