Study On Reliability Of The Man-Machine-Environment System Of Fully-Mechanized Face

The fully-mechanized face is an indispensable part of the colliery productive system and its system reliability has a direct influence on the production of collieries. According to the relevant knowledge of system engineering, reliability theory, man-machine engineering and system dynamics, this thesis regards the fully-mechanized face of coal mines as a logical system composed of man, machine and environment and analyzes the reliability of man-machine-environment system of the fully-mechanized face in terms of the three components as follows:Based on the analysis of the worker's human mistakes modes, a comprehensive research on the causes and mechanism is carried out and the quantifying model of colliery human mistakes is formed. Furthermore, the computing methods for the colliery human reliability are given;Based on the analysis of the equipment failure modes, a profound inquiry into the causes of equipment failure is conducted and a computing formula is proposed. Moreover, the consistency function of equipment maintenance, optimal planned maintenance period and the computing methods of large or medium-scale maintenance period are provided;Based on the analysis of the environmental influences, the effects of the controllable environmental factors (microclimate, noises, illumination and air condition) on the worker and related computing methods are fully illustrated.Finally, a model of the man-machine-environment system reliability of the fully-mechanized face is established by applying the system dynamics principles. Through the practical simulation and susceptibility analysis of the model, the approaches for improving the man-machine-environment system reliability of the fully-mechanized face are suggested as corresponding theoretical basis.