ULTRASOUND MONITORING DEVICE FOR ROCK FRACTURE EVOLUTION UNDER MULTI-FIELD COUPLING EFFECTS

摘要

An ultrasound monitoring device for rock fracture evolution under multi-field coupling effects, comprising a stress applying unit, a steam generating unit, a steam circulating unit, and a computer (1). The steam generating unit is connected to the stress applying unit via the steam circulating unit. The computer (1) is signally connected to sensors. The stress applying unit is controlled by the computer (1) to apply stress to a rock specimen (2). The steam generating unit is controlled by the computer (1) to generate steam of a set humidity and temperature. Impact of different changes in the humidity and temperature on the rock specimen (2) is implemented by the steam circulating unit. Effects of different chemical solutions on the rock specimen (2) are implemented by changing different chemical solutions. At the same time as the coupling effects of different stresses, different humidity, different temperatures, and different chemical solutions act on the rock specimen (2), an ultrasound monitoring test is performed on the rock specimen (2) for a quantitative study on the question of long-term stability of the rock under separate or joint effects of stress, humidity, temperature, and chemical corrosion.