摘要
根据矿山工程概况及采场宏观破坏现象,通过数值模拟计算、现状地压调查及现场原岩应力测试等工作,对大结构崩落采矿过程中采场破坏规律进行深入研究,研究结果表明,高阶段大结构崩落采矿法采场破坏主要由拉伸应力、工程地质条件、应力集中现象、高应力静压场及采矿动压现象引起。通过分析采场的破坏规律,矿山可以采取针对性技术措施,从而保障井下安全生产及改善矿山整体经济效益。
According to the general engineering situation and macroscopic failure phenomenon on mining stope, the failure laws of stope was thoroughly studied in the process of caving mining with large structure by a series of research work, such as numerical simulations, current underground pressure investigations and original rock stress measurements in field and so on. The results showed that the failure of stope mined by caving mining method with high stage and large structure was involved in various causes, mainly including tensile stress, engineering geological conditions, stress concentration, high stress static-pressure field and mining dynamic pressure. On the basis of analysing the failure laws of the stope, the technical measures could be taken by mines to ensure underground safe production and generally improve economic benefits.
出处
《矿业研究与开发》
北大核心
2017年第8期109-112,共4页
Mining Research and Development
基金
“十二五”国家科技支撑计划课题项目(2013BAB02B06)
国家安全生产监督管理总局安全生产重大事故防治关键技术科技项目(hunan-0010-2014AQ)
湖南省重大科技专项课题项目(2011FJ1003)
973计划课题项目(2010CB735507)
关键词
无底柱分段崩落采矿法
3D-σ
数值模拟
采场破坏规律
Non-sill-pillared sublevel caving method, 3D- a, Numerical simulation, Failure laws of stope
