Study On The Failure Of Overlying Strata Structure And The Regular Of Strata Pressure Behavior In Isolated Working Face

In recent years,isolated working face mining related problems has attracted extensive attention of scholars,due to the consumption of coal resources is increasing steadily with the development of economy in China,but China's coal mine built in1930 s,faced with the depletion of resources and other issues,can solve the problem of resource depletion by island working face mining,the actual exploitation of the island the working face in the process of mining often there will be some accidents,for example,the occurrence of rockburst,moving,fracture,isolated working face of overlying rock caving,seriously affected the safety of mine production,reduces the economic benefits of the mine,so we need to study more deeply on isolated working face related problems.The Xuecun coal mine of Fengfeng Jizhong energy group 14093 island working face as the research background,adopting the research method of combination of theory and practice,through extensive reading of the relevant literature on isolated working face overburden,understand the structural features of isolated working face strata,and through laboratory simulation experiment simulation in XueCun coal mine Ji Zhong energy FengFeng Group on both sides of the 14093 island working face record island working face roadway,the island working face roof,floor,roof stress changes,the development regularity of isolated working surface in the process of mining overburden rock research.Through the FLAC3 D numerical simulation software to establish the numerical simulation model,analysis of island coal mining process of overlying strata movement and stress distribution mechanism in the process of mining roadway surrounding rock dynamic disaster occurred on both sides of the control effect was revealed,isolated working face goaf scale on the island working face of disaster.The research results can provide reference for safe mining of island face.