Abstract: Aiming at a series of safety problems caused by hard roof collapse in coal mining process,this paper takes a mine as the research background,and studies the feasibility of hydraulic fracturing and pressure relief technology by combining field monitoring and ABAQUS numerical simulation software.The research results have a strong guiding significance for the hard roof of overburden strata on the working face is difficult to collapse and the rock pressure appearing strength at the end of mining.

Key words: Hydraulic fracturing, Numerical simulation, Rock pressure manifestation