Spatiotemporal Evolution Characteristics of Apparent Resistivity and Its Response Correlation with Acoustic Emission of Coal under Multi-Step Loading

To understand the early warning signs of damage during coal mass deformation process, an integrated monitoring procedure was designed that combines apparent resistivity (AR) and acoustic emission (AE) under multi-step loading. The spatiotemporal response characteristics AR time-varying evolution AE were studied varying correlation between two discussed. Additionally, macro–microscopic mechanics process explored. results show signals corresponded well with applied load process. In loading stage, variations in not apparent. As increased, high-resistance area increased became active. local variation could be used to indirectly invert internal structure samples. electrical loaded mainly controlled by conductive surface cracks. methods can strongly complement spatial temporal dimensions systems for disasters. technique continuously monitor a test abnormal occurrences engineering site, tomography images are obtained locate inversions source order take pre-emptive action before disaster occurs. This research provide new ideas rock dynamic