煤层底板渐进破坏与渗流演化数值模拟研究  

Research on Numerical Simulation of Progressive Failure and Seepage Evolution of Coal Floor

作　　者：杨鹏 Yang Peng(Shanxi Huairen Zhongneng Luzigou Coal Industry Co.,Ltd.,Shuozhou Shanxi 038300)

机构地区：[1]山西怀仁中能芦子沟煤业有限责任公司,山西朔州038300

出　　处：《晋控科学技术》2024年第4期48-51,共4页Jinneng Holding Science and Technology

摘　　要：根据山西怀仁中能芦子沟矿井复杂地质情况,建立了断层影响下的采场力学模型。运用断层的活化力学判据,表征了断层扩展演化为承压水导升通道的力学机理。运用RFPA2D-Flow软件对断层活化与突水渗流进行了模拟。结果表明:承压水沿断层的水楔作用是促使断层裂隙扩展的内在因素,断层在上下盘开采时两侧剪应力的作用下会发生活化,并最终形成滞后性的突水通道。According to the complex geological conditions of Luzigou mine,a stope mechanical model under the influence of faults is established.The mechanical mechanism of fault expansion and evolution into confined water upflowing channel is characterized by using the activation mechanical criterion of faults.The fault activation and water inrush seepage are simulated by RFPA2D-Flow software.The results show that the wedge action of confined water along the fault is the internal factor that promotes the fracture propagation.The fault will be activated under the action of shear stress on both sides during the mining of upper and footwall,and the water inrush channel will be formed eventually.

关 键 词：底板突水 数值模拟 地质构造 断层活化 底板承压水 

分 类 号：TD325.4[矿业工程—矿井建设]