Some Developments and New Insights for Microseismic/Acoustic Emission Source Localization

Figure 1

Graph shows the microseismic events, blasting events, and monitoring sensors in a mine. In the localization method that requires premeasured velocity, the average wave velocity is premeasured through the blasting events. However, the propagation paths are different for the blasting events and the microseismic events located at different coordinates. Due to the difference of rock mass structure, the values of wave velocity will not be the same for different travel paths. Therefore, it is inaccurate to use the average velocity premeasured through the blasting events to locate the future microseismic event, where the velocity is different from the premeasured velocity (from [37]).