High temperature and high pressure coal and rock true triaxial fracturing and seepage test device and test method

The invention relates to a high temperature and high pressure coal and rock true triaxial fracturing and seepage test device and a test method, and belongs to the technical field of rock mechanics and engineering. The device is characterized by comprising a true triaxial servo control real-time loading system 1, a hydraulic fracturing system 2, a supercritical CO2 fracturing system 3, a seepage system 4, a circulating cooling system 5, a temperature loading and keeping control system 6, an acoustic emission monitoring system 7, a pressure-deformation test system 8 and a data acquisition and automation control system 9. The buried conditions of real stratum can be simulated, and a specimen 19 is heated at high temperatures to simulate the depth stratum temperature environment; a fracturing test is conducted by high pressure water power or supercritical CO2; by injecting high pressure pore water or gas, a coal rock permeability test is conducted and the fracturing effect is tested; the fracture initiation, propagation and opening and closing properties of cracks generated by fracturing are monitored by the acoustic emission monitoring system 7 in the whole process, and the mechanism of formation and propagation of the cracks is mastered by observation and analysis, so that the theoretical basis and experimental basis is provided for fracturing exploitation.