Deformation Characteristics And Control Research Of Ascending Mining Upper Coal Seam Mining Roadway In Combined Layout

This paper takes Huanbei Mining(Group)Limited Liability Company.Sun Tuan Mine Upstream Coal Mining for Research,based on a comprehensive analysis of the joint arrangement of the lower 10 coal,from the following aspects of analysis of the deformation characteristics and control technology of upward mining of upper coal seam roadway:from theoretical aspect,study on ascending mining overburden movement and the lower part of the goaf formed by the stress range;according to the different distance of 8221 roadway excavation face distance of the lower goaf,the change of numerical simulation using FLAC3D software to study the deformation of roadway surrounding rock,vertical and horizontal stress,and the upper 8221 roadway location,and reveals the deformation characteristics of different surrounding rock of 8221 roadway excavation in the upper part of the design;six different sets of supporting schemes from the displacement,stress and plastic zone are the six groups of supporting effect;'based on the analysis and comparison,the ranking of roadway supporting effect is obtained.According to the actual situation of mine and the principle of economic rationality,the anchor support network cable and U steel shed are used to separate the individual supporting plan at the scene;the actual supporting effect of the scheme shows that the surrounding rock deformation energy of the roadway is controlled stably,and the safety of production is ensured,which can be used for reference by similar mining area.