底板渗流应力耦合破坏与递进导升协同突水演变规律研究

为深入研究底板渗流应力耦合破坏与递进导升协同突水演变规律，应用FLAC^3D固液耦合模式模拟隐伏断层底板岩体的应力分布、变形破坏特征、递进导升渗流规律及裂隙扩展突水机制。数值模拟表明:在矿山压力和承压水压力影响下，随着工作面开挖，打破原来开挖面周围荷载平衡，底板岩层节理裂隙经历张开、闭合、扩展反复循环过程，当矿压破坏带和递进导升带之间的岩桥贯通，递进导升高度渗入底板破坏区域相互连通，发生底板突水，直观揭示了底板渗流应力耦合破坏与递进导升协同突水机理。

Study on evolution law of water inrush coordinated by seepage stress coupled failure and progressive guiding in floor

In order to deeply study the evolution law of floor seepage stress coupling failure and progressive guiding synergistic water inrush,the FLAC^3D solid-liquid coupling model was used to simulate the stress distribution,deformation and failure characteristics,progressive guiding and seepage law of buried fault floor rock mass,fissure propagation water inrush mechanism.Numerical simulation showed that:under the influence of mine pressure and confined water pressure,with the excavation of the working face,the load balance around the original excavation face was broken,and the joints and fissures of the floor rock stratum undergo repeated cycles of opening,closing,and expansion.The rock bridge between the belt and the progressive guide belt was connected,and the progressive guided height penetrates into the floor failure area and connects with each other,resulting in floor water inrush.