Abstract：In consideration of the research requirements from rock mechanics at depth，the stress states of rock in deep-level projects is analyzed；and then the research topic of rock under coupled static and dynamic loads is brought forward. After exploration on multi-load drilling machine，INSTRON system and SHPB device，a new testing system is constructed，where rock specimen deforms and fails at medium to high strain rate. With the system，rock can be loaded with 0–200 MPa axial static pressure，0–200 MPa confining pressure and 0–500 MPa impact loading respectively or simultaneously. Tests for rock strength，fragmentation behavior and energy absorption with different coupling loads show that，with the same impact loading，rock strength is greater than its individual static or dynamic strength if the axial pressure is less than 70% of its static compression strength. With the same axial pressure，rock strength under coupling loads increases with the increase of impact loading owing to the strain rate effect. Under coupled static and dynamic loads，rock breaks with tensile failure mode. As for the particle-size distribution of fragments，the percentage of small particles increases with higher axial pressure or impact loading. The energy absorption ratio varies with coupling loads. With proper combination of static and dynamic loads，the maximum energy absorption ratio can be obtained.
