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Environmental Risk Assessment is a class of emerging , integrated research field , has a strong cross-cutting nature . Sudden , uncertainty and diversity characteristics of environmental accidents , the study and application of environmental risk assessment has important practical significance , the need for further in-depth and perfection . Coal chemical industry , there are a large number of toxic , hazardous , flammable , explosive substances , with a potential risk factor , is apt to cause leaks , fires, explosions and other environmental risk accidents , which cause poisoning , environmental pollution and ecological destruction . The paper \environmental risk analysis , prediction methods and models . Related to the basic concepts of its distinction in environmental risk assessment and risk characterization , risk criteria value , the method of risk assessment , risk prevention measures has done more in-depth exposition and description . The papers in support of the basic theory , methods, and models , combined with the the coking industry 's environmental impact assessment , the instance of the coal chemical industry, environmental risk assessment has been conducted . In short , the paper constructs risk assessment system in the study and practice of environmental risk assessment of coal chemical project has an important reference value and guidance role .
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