Abstract:

Acceptable risk criteria is one of importance research in engineering risk analysis and risk control method, which is aimed at the basis of life economic, social and environmental aspects of the risk assessment values and as a judgment of whether risk undertaker accept the risk. The paper describes the basic principles and methods of determining acceptable risk criteria, combines with the actual situation of our country and bases on the dam break data and proposes that acceptable risk can be 10^-5 by the annual probability of failure. Social tolerable risk can be 10^-4 and the number of affected people of 1000 is intolerable up limit. It is based on the ALARP principle and proposed the F-N curve of dam acceptable risk criteria. There is certain guiding significance for making acceptable risk criteria for dam engineering management.