Abstract：The underground workshop of Zhouning Hydropower Station is a large chamber with size of 66.82 m× 17.90 m×42.20 m(L×H×W )；its wall rock is lengthened crisp and whole granite. In order to protect rock anchor and girder wall，safety monitoring of exploding tremor is considered for the wall rock after adopting presplit blasting to protected layer in the courses of blasting and digging. This paper analyzes the domino effect of blasting tremor that blasting brought，acquires attenuation coefficient of earthquake wave and equation coefficient k by using the regression analysis method；summarizes the transmitting rule of blasting earthquake wave indwell the crisp and whole granite，consequently. The scathing extent is deduced，which is used to supervise the upper preferences and the scheme of safety command. The transmitting parameter of earthquake wave can provide reference to similar engineering.
