Through the comparison of seismic wave attenuation and plastic strain, except for geometricalattenuation, the plastic deformation of coal and rocks is also contributing to energy consumption.
Assuming a trilinear geometrical spreading model, we obtained the attenuation function in Guangdong region.
采用三段几何衰减模型拟合，得到了广东地区的几何衰减函数。
3
Aiming at the attenuation of stress wave traveling through the rock joints, the influences of joint geometrical shape and stiffness on the stress wave transmission coefficient are analyzed.