+865m main haulage-roadway and Main Rail-tunnel was arranged into coalfloor under the8900working face in the Xinzhouyao mine of Datong coal minegroup and mining in8900working face has a certain effect on the mainroadway.In order to safe mining in8900working face and guarantee the stability of+865main roadway under working face, the article does research on miningtechnology activity law of surrounding rock in8900working face Stratabehavior regularity of8900workface and stress distribution law deformationcharacteristics supplementary supporting measures and stability guaranteetechnology and safe technological measures of main roadway.Based on the analysis of geological conditions on8900fully mechanizedmining face in No.11coal seam, theoretical analysis numerical calculation andin-situ monitoring were adopted to determine the law of surrounding rockmovement regularities and strata pressure behavior in the8900fullymechanized face and to analyze the floor main roadway stability impact withsurrounding rock activities of face and to design supplementary supportingpatterns and research and stability guarantee technology and safe technologicalmeasures,so as to table the relevant proposals with safe production in the faceand the stability of floor main roadway. |