Study on the Improved Severity Coefficient Model of Dam Break Consequence Assessment

The assessment of the dam failure consequences is fundamental to risk assessment, and linear weight sum method generally used. comprehensive evaluation involves many factors, dimensions each factor are inconsistent. key determine coefficient severity degree consequences. Based on traditional methods, a new model loss life, economic losses, environmental impact, social impact established after taking current laws regulations, range establishment normalized function, introduction piecewise function other factors into consideration, use analysis hierarchy process obtain weight. Apply improved weighting level rank Changlong reservoir, Xialan Shibikeng Longshan reservoir Lingtan in Jiangxi Province, then grade according calculation results, analyze corresponding results accurately combined with expertise. show that if occurs, five dams all very serious, it belongs extraordinarily serious accidents. can reflect more objectively reasonably, has clear concept, simple calculation, intuitive process.