采空区失稳模式数值分析及实测验证  

Numerical Analysis and Monitoring Verification of Cavity Instability Mode

作　　者：罗周全[1] 谭浪浪[1] 邓俏[1] 徐海[1] 

机构地区：[1]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》2012年第3期89-92,共4页Mining Research and Development

基　　金："十一五"国家科技支撑计划项目(2007BAK22B04-12;2006BAB02B04-1-3-2)

摘　　要：为了准确掌握某铜矿采空区失稳模式,确保矿山安全生产,针对该矿典型采空区处于爆破震动等动力扰动条件下的工程实际,运用FLAC3D软件建立动力扰动条件下的数值分析模型,对采空区进行失稳模拟分析,确定了采空区在动力扰动条件下的失稳模式。运用采空区三维信息获取及可视化建模技术,实现了采空区失稳模式的可视化实测验证。结果表明,该矿采空区在动力扰动条件作用下主要为顶板剪切破坏和矿柱剪切破坏复合失稳模式,实测结果与数值分析结果一致。从而形成了一种有效的采空区失稳模式分析和可视化实测验证方法,为矿山有效开展采空区安全分析及处理提供了可靠的技术支持。In order to accurately know cavity instability mode in a copper mine, to ensure the production safety, in the light of en- gineering reality that typical cavity suffers dynamic disturbance caused by blasting, numerical model of cavity in dynamic dis- turbance condition was established by the software of FLAC3D, the instability of cavity was simulated and analyzed, and the pos- sible instability modes in dynamic disturbance condition was de- termined. The visual measuring verification of cavity instability mode was achieved by the use of the technologies of 3D informa- tion acquisition and visualized modeling. The results showed that, the instability of cavity under the condition of dynamic dis- turbance mainly was a combined failure mode of roof shear fail- ure and pillar shear failure. The measured results were consistent with the results of numerical analysis. The study provided an ef- fectively method for cavity instability analysis and its visual measuring verification, which provides a reliable technical sup-port to the effective safety analysis and treatment of cavity.

关 键 词：采空区 失稳模式 数值分析 实测验证 

分 类 号：TD853.391[矿业工程—金属矿开采]