Abstract：On the basis of detecting impact load，studies are carried on regulation of stress wave propagation in one-dimensional rock mass by experimental and numerical simulation. These studies include the vibration form of particle in intact rock mass，the effect of different impact loads on particle vibration，the vibration characteristic of particle near discontinuity，and the effect of multi-strip discontinuity on the regulation of propagation and attenuation of stress wave. The experimental results show that the regulation of particle vibration in intact rock mass is obvious，and its vibration frequency is unitary，indicating that the frequency has close relationship to the length of one-dimension rock mass. The experimental results also indicate that the particle vibration near discontinuity is magnified，and it can be attenuated through the crack if the wave length is not larger than the crack width. And with the number of discontinuity increasing，the attenuation of particle vibration is obvious. In addition，the attenuation of stress wave with space increasing is obvious. Multi-scale model of discrete element method is constructed on the basis of primary block discrete element model. The new model is used to simulate the stress wave propagation regulation in jointed rock mass，and is more rational. The result shows that the improved block discrete element model is fitful to simulate the propagation regulation of the stress wave in jointed rock mass.
