突出煤层过断层过程多物理场分布及演化规律研究  

Research on Distribution and Evolution Law of Multiple Physical Fields during Process of Outburst Coal Seam Passing through Faults

作　　者：杨海 韩老虎 YANG Hai;HAN Laohu(Pu′an County Energy Bureau,Qianxinan Prefecture,Guizhou Province,Qianxinan 5615042,China;Nuodong Coal Mine of Guizhou Hinggan Coal Industry Co.,Ltd.,Qianxinan 561504,China)

机构地区：[1]贵州省黔西南州普安县能源局,贵州黔西南561504 [2]贵州兴安煤业有限公司糯东煤矿,贵州黔西南561504

出　　处：《煤炭技术》2025年第3期193-197,共5页Coal Technology

摘　　要：断层构造应力是诱发煤与瓦斯突出的重要原因,揭示突出煤层穿过断层过程的多物理场演化规律对于突出防治有重要意义。建立了突出煤层掘进工作面过正断层时的气固耦合模型,研究揭示了深部开采高瓦斯压力、高地应力作用下含瓦斯煤岩破坏过程应力场、裂隙场、位移场的精细化演化规律,研究发现,掘进面过断层时煤层应力集中主要发生在工作面迎头及断层内部的构造煤处,并且随着采掘的不断推进,2个应力集中带逐渐靠近,并且有空间重叠,加之构造煤力学性质较弱,为煤与瓦斯突出提供了力学条件。Fault structural stress is an important cause of coal and gas outburst,and revealing the multi physical field evolution law of the process of outburst coal seam passing through faults is of great significance for outburst prevention and control.Establishes a gas solid coupling model when the protruding coal seam excavation face passes through a normal fault.The study reveals the refined evolution law of the stress field,fracture field,and displacement field during the failure process of gas bearing coal and rock under the action of high gas pressure and high ground stress in deep mining.The study found that the stress concentration of the coal seam mainly occurs at the front of the working face and the structural coal inside the fault when the excavation face passes through a fault.With the continuous advancement of mining,the two stress concentration zones gradually approach and overlap in space.In addition,the mechanical properties of the structural coal are weak,providing mechanical conditions for coal and gas outburst.

关 键 词：突出煤层 断层 应力场 瓦斯场 

分 类 号：TD712[矿业工程—矿井通风与安全]