抄録
Heinrich's law has been well known as the probabilistic law in which one seriously injured accident of the work place hazard can be statistically led from the certain number of disaster without injury. In this paper, the process of the labor hazard is modeled as the spatio-temporal evolutional problem from the view points of complex system. The cellular automata (CA) method is applied to solve this process as the metaphor model under the appropriate local rule. The effects of initial existence probability of the disaster without injury and kinds of local rules employed in the CA are discussed with much emphasis. Then, the probability of each level accident as the results of the pattern dynamics is assessed, being compared with the Heinrich's law and it is found that the initial probability of 55% suits this experienced law.
