Study on behavior rule of rock pressure of fully mechanized working face in medium-thickness low coal seam

The 6137 working face is the first coal mining face of the first level third mining area in Qidong Coal Mine.The coal seam of 6137 working face is medium thick and thin coal seam.During the mineral pressure observation,the KBJ-60Ⅲ-1 mine-used digital pressure gauge and KBJ-60Ⅲ-2 mine-used pressure data collector were adopted to take continuous observation of the resistance of the hydraulic support,also the lead abutment pressure and cross-section shrinkage of the two-roadway were observed.This paper obtained the motion law of the overlying strata of the working face and by analyzing the support parameters,roof management and suitability of the support,this paper summarized the mine strata pressure behavior law,which provides a reliable scientific basis for the underground mining,roadway layout and support design under the similar conditions in the future.