基于COMSOL Multiphysics多物理场耦合平台,通过对采空区底板运移规律及承压水上采煤进行渗流-应力耦合数值模拟,分析了开挖过程中煤层底板的应力变化、塑性破坏深度、渗透率变化等,得出了采空区底板裂隙发育及渗透特性变化规律,导水裂隙形成过程。 Based on the COMSOL Multiphysics multiphysics coupling platform, through the numerical simulation of seepage-stress coupling in the bottom floor of goaf and the seepage-stress coupling of confined water mining, the stress changes, the depth of plastic failure, the permeability of coal seam floor during excavation are analyzed Variation and so on, we can get the law of the development of fissures and the infiltration characteristics of goaf, the formation process of water-conducting fissures.