Table 5 Comparison of this study with the latest technology.
Comparison Dimension | Content of This Study | Latest Technological Developments | Advantages of the Study |
|---|---|---|---|
Research purpose | To explore the dynamic mechanical properties and fracture patterns of rock-like specimens under pre-existing cracks and different stress states. | Advances in the study of deep mining rock mechanics, including failure tests under dynamic-static combined loading. | Both this study and the latest technological developments focus on the behavior of deep rocks under complex stress states. |
Testing methods | Using an SHPB device with active confining pressure for impact compression testing. | Dynamic-static combined loading tests, simulating the dynamic disturbance of deep rock mass under high static load. | The SHPB testing method used in this study complements the dynamic-static combined loading tests in the latest technology. |
Failure mode analysis | Analyzed the failure modes of rock-like specimens under conditions with and without confining pressure, including tension and shear failure. | Studied the failure characteristics of red sandstone under dynamic-static combined loading, including shear failure and the degree of rock fragmentation. | Both this study and the latest technology focus on failure modes, but this study emphasizes more on the effects of crack angles and confining pressure. |
Theoretical and practical significance | Provides a theoretical basis for preventing disasters related to rock instability. | Provides theoretical and experimental basis for the stability analysis of deep mining and mine pillars. | Both this study and the latest technology have important theoretical and practical significance. |
