本文讨论了大坝安全度与安全系数之间的关系,探讨了影响确定大坝安全度的主要不确定因素及处理方法。研究表明:不确定因素分为客观和主观两类,而用可靠度理论和模糊集合论是解决这两类不确定因素的两种新途径。 This paper discusses the relationship between dam safety and safety factor and discusses the major uncertainties and solutions that affect the dam safety. The research shows that the uncertainties are divided into objective and subjective categories. However, reliability theory and fuzzy set theory are two new ways to solve these two types of uncertainties.