Research On Overlying Strata Movement Regularity Of Fully-mechanized Mining For Thick Coal Seam In Yunjialing Mine

The third mining area of Yunjialing main mines 2 # coal seam,the thick 4.1 m,belongs to the thick coal seam,the mining technique for comprehensive mechanized mining overall height at a time.Papers to Yunjialing mine the third mining area 12305 working face as the engineering background,the theoretical analysis,analog simulation,numerical simulation and field measurement method,the comprehensive mechanized coal mining thick coal seam of strata movement rule was studied.Paper in many scholars both at home and abroad on the basis of research results,based on the key strata theory,thick seam fully mechanized strata structure mechanics model is set up,the overburden rock stress and displacement of the changes in theoretical research.Papers to Yunjialing mine coal mine three mining area for the engineering background of similar simulation experiment,the experiment research thick coal seam fully mechanized movement deformation characteristics and the key strata of overburden rock fracture development height control function.Paper to Yunjialing mine coal mine as the engineering geological conditions,the FLAC3 D numerical simulation software,through the establishment of planar model,the direct roof,and the key strata and the main key stratum changes in displacement and stress distribution,by establishing a macro model,studies the evolution of the displacement field and stress field in the overburden strata regularity and final shape,thick seam fully mechanized strata movement rule are obtained.Finally,three mining area coal mine 12305 working face layout in Yunjialing mine station,using ZXZ20 mine borehole imaging device type(A),monitoring activities of overburden rock of roadway,the borehole stress meter monitoring goaf surrounding rock stress change,analysis of test results,A Yunjialing three coal mining area of 12305 activity rule of working surface rock and provides the cloud ridge coal mine safety in production with the certain significance,as well as the adjacent mines or similar geological conditions of mines provides A certain reference.