›› 2011, Vol. 32 ›› Issue (6): 1795-1800.

• Geotechnical Engineering • Previous Articles     Next Articles

Study of dynamic parameters for talus deposit based on model of cellular automata

SHI Chong1, 2, XU Wei-ya1, 2, ZHANG Yu1, 2, LI De-liang1, 2, LIU He1, 2   

  1. 1. Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing 210098, China； 2. Geotechnical Research Institute, Hohai University, Nanjing, 210098, China
  • Received:2009-10-01 Online:2011-06-10 Published:2011-06-21

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2020

Abstract: 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

Key words: dynamics, dynamic parameters, cellular automata, talus deposit, seismic wave

CLC Number: 

  • TU 459
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