Dynamic Stability Analysis of Rockmass: A Review

Figure 7

Propagation paths of P-wave with blasting sources and microseismic sources located at different coordinates. In the traditional methods such as STT and STD methods, the average velocity value of blasting source A is equal to the average value of v1 to v8, which is calculated through their own distances and travel times. However, the average velocity values of other blasting sources B, C, D, and E will not equal the source A due to the anisotropy of rock. Similarly, the authentic velocity value of a microseismic source is not equal to the velocity value used in the localization process. Thus, they are inaccurate locating sources using the premeasured average velocity value of the blasting sources, where the velocity paths are different from the sources to be located [164].