Title

Estimation of average ejection velocity generated by rib burst under compression load

RIS ID

141911

Publication Details

Yang, X., Ren, T. & Tan, L. (2020). Estimation of average ejection velocity generated by rib burst under compression load. International Journal of Rock Mechanics and Mining Sciences, 128

Abstract

© 2020 Elsevier Ltd The ejection velocity associated with coal burst is an important parameter for support and protection structure design against coal ejection, as the support or protection design rationale is to dissipate or absorb the kinetic energy carried by ejected coal. This paper provides a novel method to estimate the average particle ejection velocity of rib burst based on the energy dissipation and coal fragmentation of coal brittle failure. This research shows that the scale of kinetic energy released by coal burst in underground roadways can reach over 107 J, which can offer ejected coal with an over 26 m/s initial velocity and cause serious even fatal injury to miners without sufficient protection.

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Link to publisher version (DOI)

http://dx.doi.org/10.1016/j.ijrmms.2020.104277