Abstract: In order to solve the problems of roadway support mode and parameter layout,this paper takes a coal mine in Shanxi Province as the research object,uses FLAC numerical simulation software and comprehensive method of field test to study the deformation characteristics of roadway surrounding rock in the fully mechanized top coal caving face with large mining height,and obtains the change law of surrounding rock displacement field in the fully mechanized top coal caving face with large mining height.Combined with the actual situation of the mine,the mine pressure is adopted.The monitoring system arranges measuring points in the air return roadway of the working face for industrial experiments and realtime monitoring and observation data,grasps the change state of the displacement of the surrounding rock of the roadway,guides the determination of the supporting form and parameters of the surrounding rock of the roadway,which has important theoretical significance.

Key words: Large mining height, Fully mechanized caving face, Roadway surrounding rock, Deformation characteristics