Study on Filling Materials for Gob-side Entry Retaining Roadway Based on Preventing Rockburst in Deep Mine

Non-pillar mining based on rockburst prevention is one of the important development direction of rockburst prevention of deep mining. The article firstly analyzed the strata movement, screened and analyzed statistics of broken gangue, defined the size range of particle size range of coarse aggregate and fine aggregate of broken gangue, tested strength and preferred the filling material with different proportions, and determined the applicable filling material in gob support in Suncun Mine with high stress conditions in deep mines. Based on the results of theoretical analysis and experimental research, the article carried out a systematic study of the production of a compressible filling body molding mill, maintenance, etc. For the underground industrial experiment, it achieved good results.