摘要
采用数值模拟方法对狮凤山铜矿地下水回升浸泡对采空区及上覆岩体稳定性影响进行流固耦合计算,模拟分析地下水回升浸泡前矿体开挖过程及加入地下水后的渗透影响,得出孔隙水压力最大影响高度为161 m,其中九中段受地下水渗透影响程度较弱,八中段及其上部岩体不受影响;九中段以下越往深部,岩体受积水回升扰动影响就越大。该研究成果为上部边角矿体回采提供了依据。
The rising and soaking of groundwater had a certain effect on the stability of goaf and overlying rock mass in Shifengshan copper mine.Aimed at this problem,fluid-solid coupling calculation was conducted by numerical simulation.Then,the excavation process before groundwater immersion and the penetration influence of groundwater immersion were simulated and analyzed.It obtained that the maximum influence height of porewater pressure was 161 m.The groundwater seepage had weak influence on the ninth level,while had no effect on the eighth level and its upper rock mass.To the deep depth below the ninth level,the disturbance influence of rising groundwater on rock mass was more and more serious.The study provided a guiding significance for mining upper edge orebody.
出处
《矿业研究与开发》
CAS
北大核心
2016年第5期98-104,共7页
Mining Research and Development
基金
湖南省重大科技专项项目(2011FJ1003)
关键词
残矿回采
地下水回升浸泡
流固耦合
数值模拟
Recovery of residual ore
Rising and soaking of groundwater
Fluid-solid coupling
Numerical simulation
