Abstract—The rules of propagation for stress waves is researched in layered joints, which are the basis on studying the physical and mechanical properties as well as dynamic characteristics of rock mass. In order to research this rules for stress waves that pass through layered jointed rock mass after effect of transmission and reflection. Based on similar proportion methods of Froude, the experimental model was conducted under the effect instantaneous impact and blasting. The results showed, due to the superposition effect of transmitted and reflected waves in structural plane, the transient impact stress waves were strengthened, which made the peaks of time-history signals that passed the joint reached successively maximum during the time after jumping instead of the beginning of its jumping; Because of the barrier effect of joints, the main frequency and the maximum amplitude decreased in a nonlinear tendency of the signal before and after joints. The high frequency part of signal attenuation decreased rapidly and energy was absorbed gradually; As for the vertical or small angle of incidence stress wave, the attenuation was obvious and the amplitude was biggish in vertical and lengthways direction. However, the attenuation of stress waves was lower in lateral direction. As to stress waves of oblique incidence, there was no obvious change for its attenuation in the lateral and vertical direction, but the lengthways direction was contrary. It has vital meanings that the research on rules of propagation and attenuation for stress waves in layered joints to develop and apply in dynamic field and, damage field and underground chamber.
 

Index Terms—layered and jointed rock mass, stress wave, attenuation, spectral analysis

Cite: Bing Sun, Jie-hui Xie, and Sheng Zeng, "Characteristics of Propagation and Attenuation for Different Stress Waves in Layered Rocks," International Journal of Structural and Civil Engineering Research, Vol. 6, No. 2, pp. 149-153, May 2017. doi: 10.18178/ijscer.6.2.149-153