Abstract: In this paper, a comprehensive judgement method is proposed, in Which multiple factors influcing the dam safety are qualitatively、quantitavely and mixedly analysed on the fruitful experience of experts. Comprehensive inference judgement are applied to reveal essence of things. Thereby, the structural behaviour of a dam can be synthetically judged, and it’s possible development tendency can be forcasted. The discussion centres on fundemental prmciples of the method, which was applied to judge the stability of left abutment of a gravity arch dam. A hidden danger was found. Some measures were put foward to solve the problems.Good results have been a chieved.?

摘要： 本文提出的综合评钊法是将影响大坝安全的多元因素，经过定性、定量以及混合分析，依技于专家丰富的经脸，应用综合推理判断的准则，借以揭露事物的本质，从而综合评判大坝的结构性态，预测可能发展的趋势。本文重点论述该法的基本原理，并将其应用于评价某重力拱坝左坝肩的稳定问题，找出了隐患，提出了解决问题的一些措施，取得了良好的效果。