An improved multidirectional velocity model for micro-seismic monitoring in rock engineering

Jian Li, S.C. Wu, Y.T. Gao, L.J. Li, Y. Zhou

    Research output: Contribution to journalArticlepeer-review

    4 Citations (Scopus)


    © 2015, Central South University Press and Springer-Verlag Berlin Heidelberg. An improved multidirectional velocity model was proposed for more accurately locating micro-seismic events in rock engineering. It was assumed that the stress wave propagation velocities from a micro-seismic source to three nearest monitoring sensors in a sensor’s array arrangement were the same. Since the defined objective function does not require pre-measurement of the stress wave propagation velocity in the field, errors from the velocity measurement can be avoided in comparison to three traditional velocity models. By analyzing 24 different cases, the proposed multidirectional velocity model iterated by the Simplex method is found to be the best option no matter the source is within the region of the sensor’s array or not. The proposed model and the adopted iterative algorithm are verified by field data and it is concluded that it can significantly reduce the error of the estimated source location.
    Original languageEnglish
    Pages (from-to)2348-2358
    JournalJournal of Central South University
    Issue number6
    Publication statusPublished - 2015


    Dive into the research topics of 'An improved multidirectional velocity model for micro-seismic monitoring in rock engineering'. Together they form a unique fingerprint.

    Cite this