The invention relates to a glutinite hydrofracture
simulation method based on a discrete element. The method comprises the following steps of: S1, constructing a wall and a well bore, generating particles according to a size grading curve, and performing initial balance calculation, S2, dividing the particles into a matrix and gravel by a
cutting method, endowing the matrix and the gravel with different cementing parameters, S3, adding a
seepage field and endowing a corresponding flow parameter, S4, applying confining pressure on the external wall based on a
servo system, setting a
fluid injection speed, S5, monitoring cementing states of the particles in real time, and judging whether
micro cracks are generated according to the cementing states, and S6, continuing
simulation till penetration of hydraulic cracks occurs. The glutinite hydrofracture
simulation method based on the discrete element can characterize
crack initiation and expansion mechanisms of the hydraulic cracks preciselyfrom a microscale, and accurately capture a
macro distribution morphology of the hydraulic cracks, so that the understanding of a field engineer on an expansion rule of the hydraulic cracks of a glutinite reservoir is enhanced; and a fracture design is improved.