In order to solve the problem of poor stability of surrounding rock caused by excessive advance abutment pressure in coal seam mining face,this paper takes 360801 working face of Xinji No.1 Mine as the research background,and uses numerical simulation software to study the advance abutment pressure and displacement of hydraulic fracturing roof cutting and pressure relief working face.The results show that the abutment stress is significantly reduced after hydraulic fracturing,and the stability of coal seam roof is improved.The stress is obviously reduced at 20 m away from the hydraulic fracturing position.At 20-40 m away from the hydraulic fracturing position,the stress gradually recovers and is in the stress recovery zone;40 m away from the hydraulic fracturing position,the surrounding rock is not affected,which provides a certain reference for the study of hydraulic fracturing technology of coal seam surrounding rock in mine.
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