This　paper　presents　an　evaluation　of　stress　wave　propagation　through　rock　mass　using　a　modified　dominate　frequency　method.　The　effective　velocity　and　transmission　coefficient　of　stress　wave　propagation　through　rock　mass　with　different　joint　stiffnesses　are　investigated.　The　results　are　validated　by　the　theoretical　method　and　the　effects　of　incident　frequency　on　the　calculation　accuracy　are　discussed.　The　results　show　that　the　modified　dominate　frequency　method　can　be　used　to　predict　the　effective　velocity　when　the　frequency　of　stress　waves　is　within　the　low　frequency　range　or　high　frequency　range.　However,　the　error　cannot　be　ignored　when　the　frequency　is　in　the　transitional　frequency　range.　On　the　other　hand,　the　modified　dominate　frequency　method　can　be　used　to　predict　the　transmission　coefficient　when　the　frequency　of　stress　wave　is　within　the　low　frequency　range　or　optimal　frequency　range.　However,　the　error　cannot　be　ignored　when　the　wave　is　within　the　high　frequency　range,　which　approaches　40%　when　the　frequency　is　sufficiently　large.　Finally,　the　optimal　stiffness　frequency　relationship　for　the　maximum　calculation　errors　of　effective　velocity　and　the　minimum　calculation　errors　of　transmission　coefficient　are　proposed.　(C)　2016　Elsevier　B.V.　All　rights　reserved.