１前言量化风险评价技术作为大坝安全管理的辅助手段近年来发展迅速，美国、澳大利亚和加拿大等国的进展更快。量化风险评价包括：失事模式识别；大坝失事概率估算的分析；大坝失事后的经济、环境损失和生命丧失的计算；风险评价与风险标准的比较。本文重点评论了现有的由于正 1 Introduction Quantitative risk assessment techniques have developed rapidly in recent years as an aid to dam safety management. The United States, Australia, and Canada have made even faster progress. Quantitative risk assessment includes: identification of failure modes; analysis of probability of dam failure; calculation of economic, environmental losses and loss of life after dam failure; comparison of risk assessment with risk criteria. This article focuses on the existing due to positive