Study On Complex Causing Mechanism And Management & Control Of Significant Gas Accidents Of Coal Mines In China

As a complex socio-technical system, the accident causes in the coal mine system come with even more complexity. By analyzing the causing factors attributes and the relationships, system structure and evolution to find the complex causing mechanism, the brittleness connections, feedback and dynamic complexity of the coal mine significant accidents are studied in this research. Finally, the methods and measures to control and management the accidents in coal mine are proposed for China coal mines.On the basis of statistical analysis of China coal mines'accidents history and structure, the characteristics and significant causes of accidents are put forward, especially for the significant coal mine gas accident which the occurrence mechanism is analyzed. It is pointed out the huge, multi functional and multi input and output socio technical system that brings complexity to accidents causing. With Hierarchal Holographic Modeling (HHM) method, the coal mine accident causing hierarchal holographic model is depicted for the following research.The coal mine safety system is a typical brittle or vulnerable system. By define the brittleness source and system structure, the fault tree is used to identify the causing factors in coal mine gas accident analysis. The system brittleness connection entropy is calculated from human related subsystem, machine related subsystem, environment related subsystem and management related subsystem with questionnaire survey data. Then the gas accident brittleness causing process is constructed and the mechanism is studied from micro perspective.In the system dynamic perspective, the feedback and time delay are the main reasons which bring complexity into the coal mine gas accident. With system dynamics theory and modeling tool, a simulation model which contains mine capacity subsystem, coal production subsystem, human resource subsystem and safety subsystem is constructed by Vensim, the system dynamics modeling tool. In the simulation model, the human related, equipment related, environment related and cultural factors in the accidents causing process are analyzed to find the coal mine significant gas accident mechanism. With simulation in different scenarios and sensitivity analysis, the variation of causing factors and the influential relations are studied to seek the control approaches and management measures to the accidents of coal mine system.On the basis of the studies upon, methods and measures to control the significant gas accidents and safety management suggestions are given for China coal mine administration from complex brittle theory and dynamic feedback complexity, which includes to control or cancel the brittle connection, strengthen technology and management defenses to reduce the coal mine significant gas accidents, to reduce human unsafe behavior by enhance safety management commitment personnel commitment and to management hidden danger by close and in time management.There are 77 figures, 12 tables and 155 references in the thesis.