Abstract: The fissures produced by blasting pressure relief are widely distributed in the rockburst coal seam. To investigate the effect of crack dip angle on the progressive failure characteristic of coal with bursting liability,uniaxial compression test were carried out on coal samples with different crack dip angles. The following results were obtained:1) As the crack dip angle increases,there is a rise in peak strength and elastic modulus,the peak strain increases first and then decreases again,and the peak transverse strain increases first and then decreases. 2)With the increase of crack dip angle,the characteristic stress of coal sample cracking and damage shows a stepwise change. The cracking and damage stresses increase in a “ three-stage” manner. The characteristic stresses increase linearly at 0°,15°,30°,and 45°,rise rapidly at 45°,60°,and 75°,and increase slowly at 75° and 90°. 3) A method for jointly evaluating the bursting liability by bursting energy index,yield,damage time step,and pre-peak fissure percentage was proposed. It was found that the bursting liability of coal samples with 45° fractures was the weakest. 4) A progressive failure model of fractured coal samples was established to analyze its failure mechanism. When the dip is less than 60°,the instability of the coal sample is significantly affected by the prefabricated fractures. The crack initiation position is at the tip or middle of the fissures,and the crack type is mainly a mixture of tensile and shear. When the dip is more than 60°,the influence of fissures on instability behavior is relatively weak.