Mechanical Behaviors of Granite after Thermal Shock with Different Cooling Rates

During the construction of nuclear waste storage facilities, deep drilling, and geothermal energy development, high-temperature rocks are inevitably subjected to thermal shock. The physical mechanical behaviors granite treated with different shocks were analyzed by non-destructive (P-wave velocity test) destructive tests (uniaxial compression test Brazil splitting test). results show that P-wave (VP), uniaxial compressive strength (UCS), elastic modulus (E), tensile (st) specimens all decrease treatment temperature. Compared air cooling, water cooling causes greater damage properties granite. Thermal shock induces stress inside rock due inhomogeneous expansion mineral particles further initiation propagation microcracks which alter Rapid aggravates degree specimens. failure pattern gradually transforms from longitudinal fracture shear In addition, there is a good fitting relationship between parameters after temperature treatments, indicates can be used evaluate predict parameters. research provide guidance for engineering.