Research on Seismic Wave Quality Factor of Marble Jointed Rock Mass under SHPB Impact

In order to quantitatively describe the energy dissipation law of jointed rock mass, we obtained cores in laboratory conditions using marble from roof and floor Jinchanghe Lead–zinc mine Baoshan. The dissipative degree stress wave mass is measured by introducing quality factor Qs parameter. Based on experimental principle Split Hopkinson Pressure rod loading device (SHPB), proposed a three-wave method incident wave, reflected projected for calculating samples’ based energy. Using SHPB test system multiple specimens taken same piece shock compression experiment, three groups under different gained transmission data, deal with calculate joint sample maximum storage energy, factors. results show that: ① non-destructive breaking time–history strain Dali impact load dynamic system; combined deformation calculation factor, six values are obtained. Although discrete, overall deviation small an average 43.07. ② AUTODYN-Code was used simulate damage fracture characteristics factors explosive load. showed that radius shear area gradually increased increase porosity, but it not obvious.