The invention discloses an acoustical emitting and resistivity joint monitoring device and a monitoring method of a
fracture process of a rock specimen. According to the acoustical emitting and resistivity joint monitoring device, an
electrode at the front end of an acoustical-electrical integrating testing probe on an acoustical-electrical integrating testing probe holding device is connected with a
drill hole in the rock specimen; the acoustical emitting acquiring module and a resistivity acquiring module are both connected with a
data processing system; the
data processing system is connected with a real-time display
system; the rock specimen is placed between two bearing plates of a rigid
servo press; and a stress acquiring module and a strain acquiring module are both connected with the
data processing system, and therefore, the acoustical emitting data, the resistivity data and the stress-strain data can be synchronously acquired in real time during the rock
uniaxial compression test; and the resistivity acquiring module is used for automatically acquiring the resistivity data at
ultrahigh frequency, and automatically improving the resistivity acquiring frequency after accepting
feedback control, so that the resistivity variation data of the rock specimen in the
fracture process can be completely acquired, and as a result, the fracture information of the rock specimen can be dynamically captured in real time.