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1.introduction1.1research objectives and significance1.1.1topic introduction 1.1.2study purpose and significance 1.2scientific principle and risk management technology1.2.1scientific principle1.2.2risk management technology1.3risk identifications and warning methods in coalproduction1.4research contents, ideas and methods1.4.1research contents1.4.2basic ideas1.4.3research methods1.5research difficulties, viewpoints and innovations1.5.1research difficulties1.5.2main viewpoints1.5.3research innovations2.basic theory and technical methods of risk management2.1basic theory of risk management—accident causingtheory2.1.1development of accident causing theory2.1.2causal chain theory2.1.3energy transfer theory 2.1.4causal models based on information process2.1.5path cross theory2.1.6causal models of complex system2.1.7unsafety behavior analysis model 2.2risk management technology—governanceframework of erm2.2.1development of erm2.2.2practice of erm2.2.3framework of comprehensive risk warning systembased on erm2.3summary3.accidentª²causing model in coal production3.1process feature of coal production3.1.1exploitation3.1.2excavation3.1.3coal mining3.1.4transportation3.2accidentª²causing model in coal production3.2.1theory of risk source3.2.2catastrophe model of accidentª²causing3.3risks in coal producion based on accidentª²causingtheory3.4accidentª²causing model in coal production 3.4.1external causes of accidents3.4.2internal causes of accidents3.5summary4.risk identification and evaluation in coal production undererm framework4.1forms and characteristics of risk sources4.2structure and classification of risk sources4.3identification of main risk sources in coalproduction4.4evaluation of risk source based on twoª²tuplelinguistic4.4.1construction of risk evaluation system in coal safetyproduction4.4.2twoª²tuple linguistic group decisionª²makingmethod4.4.3coal risk evaluation based on twoª²tuplelinguistic4.4.4case analysis 4.4.5conclusion4.5summary5.conclusions and prospect5.1conclusions5.2innovations5.3research ideas of future workreferences