Three-dimensional cellular automata based particle flow simulations of mechanical properties of talus deposit  

作　　者：Linwei Wang Weiya Xu Anquan Xu 

机构地区：[1]Geotechnical Research Institute,Hohai University [2]College of Hydraulic and Environment Engineering,China Three Gorges University [3]Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering,Hohai University

出　　处：《Journal of Rock Mechanics and Geotechnical Engineering》2012年第4期375-384,共10页岩石力学与岩土工程学报（英文版）

基　　金：Supported by the National Natural Science Foundation of China(50979030 and 50911130366)

摘　　要：Based on three-dimensional cellular automata （CA）, a new stochastic simulation model to simulate the microstructures and particle flow of talus deposit is proposed. Ill addition, an auto-modeling program CARS is developed, with which nunaerical simulations can be conducted conveniently. For the problem of simulating mechanical behaviors of talus deposit, spatial anangement or sphere shapes should be considered. In the new modeling method, four sphere anangement models are developed for the particle flow simulation of talus deposit. Numerical results show that the talus deposit has the mechanical characteristics of typical stress-strain curves, as other rock-like materials. The cohesion of talus deposit decreases with increasing rock content, while the internal friction angle increases with increasing rock contents. Finally, numerical simulation is verified with the results of field test.Based on three-dimensional cellular automata （CA）, a new stochastic simulation model to simulate the microstructures and particle flow of talus deposit is proposed. Ill addition, an auto-modeling program CARS is developed, with which nunaerical simulations can be conducted conveniently. For the problem of simulating mechanical behaviors of talus deposit, spatial anangement or sphere shapes should be considered. In the new modeling method, four sphere anangement models are developed for the particle flow simulation of talus deposit. Numerical results show that the talus deposit has the mechanical characteristics of typical stress-strain curves, as other rock-like materials. The cohesion of talus deposit decreases with increasing rock content, while the internal friction angle increases with increasing rock contents. Finally, numerical simulation is verified with the results of field test.

关 键 词：soil mechanics talus deposit： three-dimensional cellular automata （CA） particle flow mechanical properties 

分 类 号：TU45[建筑科学—岩土工程] TV214[建筑科学—土工工程]