| Coal mines can be regarded as a huge system with a complex infrastructure in a constantly changing environment where risks of safe production are practical and diversified. The goal of risk management in coal mines is to pursue the intrinsic safety with its key point lying in recognition of causes of potential dangers. In the recent years, the safety assessment has been widely performed in coal mines in an effort to identify danger-causing factors and further analyzing their complex interconnections. The safety assessment of coal mines has been gaining significant progress, but still lacking theoretical basis and technical schemes to conduct. In an effort to gain the consistent improvement in mine safety, research on the regularity of the danger-causing factor emergence, development and coupling in disaster brewing needs further development in the theory of risk management with its core lying in the cause recognition of potential dangers, effective combination of technic and management, as well as technic screen and integration in the field of risk recognition.On the basis of historical development of safety management in coal mines, the author puts forward a logical model of safety system which is comprised of safety regions of mining working faces and safety impact points of high safety risks, interconnected by logical passageways. The model of logical safety system is built as the research result in the analysis on the coupling of causing factors of potential dangers, thus greatly simplifies the logical structure of the complex huge safety system of coal mines and highlights the important status of the safety region theory, and, from the view point of modern science of management, further transforms the safety region into a sub-network with safety impact points as the joints, influenced by"operation, disaster causing factor, monitor, interaction, environment".As a complicated cycle of operation in a constantly changing environment, coal production inevitably activates the relevant disaster-causing factors, bring about the appearance of origin of potential dangers through the coupling of disaster-causing factors. The dissertation takes the ventilation and gas safety of coal mines as its research topic, focusing on the necessities of intrinsic safety of coal mining with respect to information acquisition, application, analysis and plan of precaution, analyzing disaster-causing factors with the principle of Boole's algebra, building the coupling model of disaster-causing factors, putting forward the coupling analysis method of disaster-causing factors, thus made a beneficial exploration in a technical way of disaster-causing factor recognition.The relevant simulation and calculation of mine ventilation as well as gas safety are systematically performed and properly screened. The acquisition for definite index and indefinite index to identify causes of potential dangers is considered. Optimum ways of ventilation analysis based on ventilation network calculations are discussed and explored. Models of ventilation data analysis and its platform of application are built. The respective software is developed to support the coupling analysis method of disaster-causing factors. A creative way of coupling between technic supervision and risk management in the field of ventilation safety is tested.Jinneng No.2 Mine of Shenhua-Ningmei group is a large scale mine of 50-year operation with complex system of roadways under difficult geological conditions. It has been the most influential underground coal mine in the northwest region of China for quite a long time. In the dissertation, Jinneng No.2 Mine is taken as the research base to carry out systematic analysis with important achievements gained, thus to ensure the leading position of Shenhua-Ningmei group in the overall situation of mine safety in the whole country. The relevant research achievements are being spreaded in all mines of Shenhua-Ningmei group. It will greatly raise the safety conditions for all coal mines.
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