DKJStartDKJStartDKJStartSuperiority Analysis of Influence of Initial Crack Geometrical Properties on Rock Failure

The influence of crack length and crack quantity on crack fractal evolution in rock was studied by use of a large number of crack propagation images under different stress states in order to research on influence of initial crack geometrical properties on rock failure. The role of single geometrical property contribution to rock failure was analyzed based on the numerical test results. Judgement matrix was established. Bearing capacity for three selected specimens is assessed based on AHP. The result is same as numerical test. Theoretical reference is provided for study on crack propagation laws of crack rock mass.