Characteristic Study On Watershed Sudden Pollution Accident Based On Fault Tree

The rapid development of social economy,Sudden pollution accidents occur frequently in China,Serious threat to people's normal life and social harmony and stability.Because the sudden pollution accident is uncertain,diverse and difficult to deal with,Resulting in the existing emergency measures are often lack of pertinence,Therefore the processing efficiency and the practical operability is low.By using the fault tree analysis method,Study on the main causes of sudden pollution accidents.Finallythe index system for the study of the characteristics of sudden pollution accidents is established.In order to achieve a targeted,rapid and effective response to the sudden pollution accident occurred in the basin,provide the basis for decision making for emergency treatment of sudden pollution accidents.First based on the statistical analysis of the typical cases of sudden pollution accidents in China in recent 30 years,Find out the rules and characteristics of all kinds of watershed pollution accidents.The types of pollutants are mainly hazardous chemicals and oils,which account for 51%and 22%of the total samples;Traffic accidents and illegal emissions are the main sources of risk of sudden pollution accidents,And the number of sudden pollution accidents caused by the leakage of production is also rising,the relevant departments must give adequate protection.Then based on the investigation and analysis of the case of sudden pollution accident,By accident tree analysis,the cause of the accident is derived from the accident result of sudden pollution accident",Construction of accident tree for sudden pollution accidents in various basins,The relationship between the occurrence of sudden pollution accidents and the leakage of pollutants,the way of pollutants entering the river and the causes of water quality deterioration were studied in detail,Qualitative analysis of fault tree,The minimum cut sets and structure importance of the basic events are obtained,The main reasons for the sudden pollution accidents of all kinds of basins are obtained through the calculation and analysis.Finally,this paper takes the case of sudden oil pollution accident,Study on the characteristics of emergency treatment technology of oil pollution sources,Study on the index system of the characteristics of oil pollution accident.By establishing the index system of the characteristics of oil pollution accident,Combined with the corresponding emergency treatment technology optimization scheme,Finallythe index system for the study of the characteristics of sudden pollution accidents is established,And according to the specific characteristics of pollution accidents to take appropriate emergency response measures to maximize the scope of pollution control.