隐伏断层活化诱发石门揭煤突出的数值模拟研究  

Numerical Simulation Study on the Outburst of Uncovering Coal in Crosscut Induced by Concealed Fault Activation

作　　者：王浩[1] 左宇军[1,2,3] 于美鲁 王剑 林健云 WANG Hao;ZUO Yujun;YU Meilu;WANG Jian;LIN Jianyun(Mining School,Guizhou University,Guiyang,Guizhou 550025,China;Guizhou Key Laboratory of Comprehensive Utilization of Non-metallic Mineral Resources,Guizhou University,Guiyang,Guizhou 550003,China;Engineering Center for Safe Mining Technology Under Complex Geologic Condition,Guiyang,Guizhou 550025,China)

机构地区：[1]贵州大学矿业学院,贵州贵阳550025 [2]贵州省非金属矿产资源综合利用重点实验室,贵州贵阳550025 [3]复杂地质矿山开采安全技术工程中心,贵州贵阳550025

出　　处：《矿业研究与开发》2019年第6期126-131,共6页Mining Research and Development

基　　金：国家自然科学基金项目(51574093,51774101);贵州省高层次创新型人才培养(百层次)项目(黔科合人才(2016)4011号)

摘　　要：结合工程实例,采用3DEC数值模拟软件进行了隐伏断层活化诱发石门揭煤突出的数值模拟实验研究。通过模拟断层活化、滑移以及揭煤工作面应力集中等现象,研究了动力扰动影响下的隐伏断层活化规律、煤岩体应力状态的动态响应、瓦斯运移通道的形成以及揭煤突出的可能性,揭示了开采扰动、断层活化、煤与瓦斯突出之间的因果关系,分析了隐伏断层活化诱导石门揭煤突出的机理。通过分析具体工况条件下的模拟结果,得到隐伏断层活化诱发石门揭煤突出的发生规律,对生产实际中隐伏断层影响带内煤与瓦斯突出问题的防治具有指导意义。Combined with an engineering example,3DEC numerical simulation software was used for the numerical simulation experiment on the outburst of uncovering coal in crosscut induced by concealed fault activation.By simulating the phenomenons such as fault activation,slippage and stress concentration on uncovering coal surface,the activation law of concealed fault under the influence of dynamic disturbance,the dynamic response of the stress state of coal and rock mass,the formation of gas migration channel and the possibility of uncovering coal outburst were studied.The causal relationships between mining disturbance and fault activation with coal and gas outburst were revealed,and the mechanism of outburst of uncovering coal in crosscut induced by concealed fault activation was analyzed.Through the analysis on simulation results under specific working conditions,the occurrence laws of uncovering coal outburst induced by the concealed fault activation were obtained.The study was of guiding significance to the prevention and control of coal and gas outburst in the zone affected by concealed faults in actual production.

关 键 词：隐伏断层 石门揭煤 断层活化 瓦斯突出 数值模拟 

分 类 号：TD713[矿业工程—矿井通风与安全]