Influence of the Number of Parallel Joints on the Dynamic Mechanical Properties of Rock-Like Features

The number and distribution of joints in rock are closely related to their physical mechanical properties. In this paper, given the propagation law explosive stress waves jointed during blasting influence on dynamic properties crushing energy dissipation rock, parallel simulated construction concrete specimens using a mica sheet. discrete Hopkinson test device is used perform impact test, which based three-wave fractal theory. Under load, fluctuation characteristics, failure mode, dimension, transfer rock-like with various studied detail. results show that overall specimen becomes more severe increase joints, mode changed from conjugate shear complete edge collapse joints. Thus, as increases, static strength decreases, degree reduction positively With changing trend enhancement factor increases first then slows down. Compared nonjointed specimens, transmission coefficient 1-3 decreased by 0.22, 0.05, 0.17, respectively. dimension D f correlated. synonymous pressure 0.35 MPa, corresponding increased 2.27 2.42. consumption density, coefficient, compressive id="M2"> σ d significantly negatively correlated, density 0.82 J/cm3 0.28 J/cm3.