昆阳磷矿露天采场最终边坡稳定性分析及控制

Analysis and Control of Final Slope Stability in Kunyang Phosphate Mine Open Stope

露天边坡稳定性分析对于指导生产过程中边坡安全控制具有重要意义。为维护昆阳磷矿南部露天边坡安全,开展了边坡岩体力学参数测试和质量分级,采用极限平衡法,借助SLIDE边坡分析软件进行典型边坡剖面的稳定性计算。结果表明,采场南部最终边坡整体处于稳定状态;矿山开采靠帮后,采场边坡未发生失稳滑坡事故,验证了理论分析的可靠性。最后提出了矿山开采过程中的边坡稳定性控制措施,对于类似矿山边坡控制具有一定借鉴作用。

Open-pit slope stability analysis is of great significance to guide slope safety control in production process.In order to maintain the safety of the open-pit slope in the south of Kunyang Phosphate Mine,the mechanical parameter test and quality classification of the rock mass of the slope were carried out,and the limit equilibrium method was used to calculate the stability of the typical slope profile with the help of the SLIDE slope analysis software.The results show that the final slope in the south of the stope is in a stable state as a whole.After the mining was supported,there was no instability and landslide accident on the stope slope,which verified the reliability of the theoretical analysis.Finally,the slope stability con⁃trol measures in the mining process are proposed,which can be used as a reference for the slope control of similar mines.