摘要
应用岩石损伤与渗流耦合分析 F-RFPA^(2D) 系统,模拟了采动影响下覆岩破坏的动态发展过程以及采动工作面推进过程中,应力场和渗流场逐步演化的过程.根据数值模拟的结果,初步探讨了覆岩破断机理及其渗透性变化规律,提出了覆岩渗透性演化过程受开挖引起的应力重新分布及损伤累积过程中结构破断分布特征的影响的规律。
Using flow-coupled rock failure process analysis(F-RFPA^(2D))code,the dynamic development of failure process of overburden rock strata and the evolution of stress fields and seepage fields during mining excavation are simulated.According to the results of numerical simulation,the failure mechanism of overburden rock strata and the variation of permeability are studied.The numerical results indicate that the redistribution of stress and the fracture and failure of strata induced by mining excavation are of strong influence on the evolution of permeability.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2003年第z1期2386-2389,共4页
Chinese Journal of Rock Mechanics and Engineering
基金
国家自然科学基金(50204003).
关键词
地下工程
采动破坏
渗透性
数值模拟
underground engineering
failure caused by mining excavation
permeability
numerical simulation
