Study On Control Technology Of Surrounding Rock In Close Bifurcation Zone Of Shaping Coal Mine

Due to the different conditions of coal formation in different areas,the occurrence of coal seams are also different.There are coal seams in the coal seam.There are thin coal seams with thick coal seams.There are deep coal seams in the coal seam.In this paper,based on the study of maturity theory of scholars at home and abroad,combined with the geological data and exploitation of 8 # coal seam in Shaping Coal Mine,the application of FLAC and UDEC simulation software was used as a research tool to study the close distance coal seam in the split area of 8 # coal seam in Shaping Coal Mine,and the following conclusions were drawn:1.Using the theoretical analysis and numerical simulation results,combined with the actual production situation of 8 # coal seam in Shaping Coal Mine,comprehensively considering the influence of coal pillar and coal miningarea on 8 # coal seam and coal mining area,in ensuring the efficient use of resources and safe production Under the premise of the six simulation programs through the comparison of the various dimensions to determine the current coal seam within the wrong 10 m in the economic and technological reasonable point of view the most suitable to Shaping coal mine 8 # under the coal seam.2.The bifurcation zone of 8 # coal seam in Shaping Coal Mine belongs to the close coal seam,the interlayer spacing is small and the strength of the interlayer rock formation is low.When the coal seam is mined,the direct roof of the coal seam will take the same,The effect of the surface advancement on the working face of the coal seam is the effect of the upper top of the coal seam on the top of the rotary deformation and the collapse of the instability of the upper coal seam at the top of the broken pressure generated by the extension to the next coal seam,and further cause the work of the coal seam Surface pressure,so for the characteristics of Shaping coal seam for the next coal mining face mining is the main factors affecting the basic roof of the top of the rotary deformation,falling instability and breaking and so on.3.According to the different inter-layer structure of the near-distance coal seam,the model of the relationship between the support and the surrounding rock of the three types of coal seam is established.Based on the analysis of the structural model of the three types of coal seam,And the calculation formula of the working resistance of the working face is provided,which provides a theoretical analysis and calculation method for determining theworking resistance of the working face of the coal seam in 8 # Shaping Coal Mine.