Study on rock damage and failure depth under particle water-jet coupling impact

Aiming at the problems of difficult observation of rock damage mechanism and many influencing factors of rock-breaking process, the damage mechanism of particle water-jet coupling impact was studied. Based on SPH-FEM coupling algorithm, the numerical model of particle water-jet impact rock was established, and the mechanical properties of rock were characterized by JH-2 (Johnson Holmquist II) damage model. Then, damage evolution and failure...