昆阳磷矿采掘场与排土场边坡稳定性分析  

Stability Analysis of the Slope of the Mining Field and Waste Field of Kunyang Phosphate Mine

作　　者：李天华 李小双[1,2] 李耀基[1,2] 黄杰 王孟来[1,2] 

机构地区：[1]国家磷资源开发利用工程技术研究中心 [2]云南磷化集团有限公司

出　　处：《现代矿业》2016年第6期191-193,209,共4页Modern Mining

摘　　要：通过理论分析、现场调研、数值计算分析等方法,对昆阳磷矿采掘场与排土场的边坡稳定性进行了分析。结果表明:1自燃区域采掘场最终帮坡角为38°时,边坡稳定系数为1.24,端帮最终帮坡角为40°时,边坡基本稳定,其余部位的最终帮坡角为32°时,边坡稳定系数为1.25;2露天矿外排土场的排弃高度为60 m,最终帮坡角为22°时,边坡稳定系数为1.26,内排土场的排弃高度为100 m,最终边坡角为22°时,边坡稳定系数为1.28。上述分析成果对于确保昆阳磷矿安全生产有一定的参考价值。The stability of the mining field and waste dump of Kunyang phosphate mine are analyzed by adopting the scene investigation,theoretical analysis and numerical simulation method.The results show that ①when the eventual slope angle of the mining field of spontaneous combustion zone is 38°,its slope stability coefficient is 1.24;when the eventual end slope angle of spontaneous combustion zone is 40°,the slope is stable in normal conditions;the eventual slope angle of the reset parts of spontaneous combustion zone is 32°,and its slope stability coefficient is 1.25.②when the open-pit mine abandoned outside height is 60 m ,the eventual slope angle is 22°and slope stability coefficient is 1.26;when the open-pit mine abandoned inside height is 100 m,the eventual slope angle is 22°and slope stability coeffi-cient is 1.28.The above analysis results have some reference for the safety production of Kunyang phos-phate mine.

关 键 词：边坡稳定性 采掘场 排土场 最终帮坡角 稳定系数 

分 类 号：TD871.3[矿业工程—非金属矿开采]