含断层边坡条件下挂帮矿开采时变规律分析  

Time-varying Law Analysis for Hanging-wall Ore Mining in Slope with Fault

作　　者：秦安洪 雷涛[2] 栗红玉[2] 

机构地区：[1]武汉钢铁集团开圣科技有限责任公司,湖北武汉410070 [2]中南大学资源与安全工程学院,湖南长沙410083

出　　处：《矿业研究与开发》2011年第1期12-15,共4页Mining Research and Development

基　　金："十一五"国家科技支撑计划项目(2006BAB02A02)

摘　　要：根据大冶铁矿东露天采场挂帮矿开采的实际情况,建立基于时变力学的数值模型,利用MIDAS/GTS有限元分析软件,模拟并分析了该露天边坡挂帮矿开采的时变规律。模拟结果表明:(1)随着挂帮矿的回采步的推进,回采引起的应力和位移均随之增大,表现出明显的时变规律特征;(2)边坡发生失稳可能性最大的阶段不是在回采的最后一步,而是在第3回采步;(3)F9断层作为主要的软弱结构体,控制着整个边坡的稳定性,需要采取相应的加固措施。According to the actual situation of the hanging-wall ore mining at the east open pit of Daye Iron Mine,a numerical model based on the time-varying mechanics was established.And the time-varying law of the hanging-wall ore mining was simulated and analyzed by using finite element analysis software MIDAS/GTS.The results showed that as the advance of mining steps the slope＇s stress and displacement incurred by mining increased gradually,presented an obvious time-varying law;the slope instability will occur most probably in the third step of mining but in the final step;the F9 fault as a major weak geological structure dominates the stability of the slope,some corresponding reinforcement measures need to be taken.

关 键 词：露天边坡 断层 时变规律 边坡稳定 数值模拟 

分 类 号：TD854.6[矿业工程—金属矿开采]