System Dynamics Analysis of Man-Machine Efficacy in Plateau Mines

The effects of multiple factors in plateau environments on the working efficiency of equipment operation by personnel makes man-machine efficacy relatively difficult to evaluate. In this study, system dynamics are combined with coupling theory to establish a system dynamics simulation system to quantify the impact of personnel, equipment, and the environment on man-machine efficacy for a plateau environment and analyze the corresponding influencing factors. First, the factors that affect man-machine efficacy and the direct coupling between these factors are identified. Next, expert scoring is used to calculate the coupling between factors to construct a system dynamics model. Finally, the interaction between the influencing factors is used to develop a system dynamics simulation model for the man-machine environment. The results show that man-machine environment influence factors have the most noticeable effect on the man-machine function. The different factors have the same overall effect on the man-machine efficiency, where the impact value slowly increases over the first 0 to 6 hours of working time and then increases significantly. This result shows that the influencing factors have little effect on the man-machine efficiency before 6 hours of working time. The influence of the factors gradually becomes evident after 6 hours of operation time. Therefore, different labor hours are recommended for plateau mining enterprises in practice than for plain areas, where working times should be decreased to under 6 hours.

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