As a typical binary medium

talus deposit is made up of weak parent soil

stiff macadam or rock blocks. Cellular automata model is used in evolution of random and discrete elements to simulate the distribution structure and accumulation characteristics; then equivalent wave speed is calculated according to transmission theory of elastic stress wave; then the influence on dynamic parameters of medium distribution and rigidity are studied. The results show that the wave speed in talus is controlled by parent medium and fill medium; the more faint the parent medium is

the more slow SV speed is; it exhibit as logarithm relation. The more content of rock filling can make more high wave speed; the speed and content of rock filling takes as logarithm relation

while there’s little correlation between amplitude ratio and rock filling; it primary depends on distribution construction. Due to the inhomogeneous density of talus

wave speed is closely related with incident wave frequency; high frequency makes high wave speed and low frequency makes low wave speed. With this method

the wave mechanics can be better considered; dynamic parameters of complex medium can be effectively achieved; and shortage of indoor and field tests can be greatly improved