Abstract: Based on hydrogen and oxygen isotopes, hydrochemistry, hydrogeology and foundation treatment, the quantitative analysis of source of spring water in Cetian dam foundation is carried out. Conclusion is got that the spring is replenished by underground water from the northwest as well as the reservoir water, of which the reservoir water supply accounts for about 70.1% and the supply by underground water from northern bank accounts for about 29.9%. It provides scientific guidance for dam reinforcement and treatment, and has significance to ensure dam safety.

Key words: hydrogen and oxygen isotope, hydrochemistry, dam foundation, spring water, quantitative analysis

摘要： 基于地下水氢氧同位素与水化学、水文地质与地基处理等对册田水库坝基泉水的来源进行定量分析，得出坝基泉水是由库水和西北部地下水共同补给的结论，其中库水补给约占70.1%，北岸地下水补给约占29.9%，为大坝加固治理提供科学指导，对保证大坝安全有一定意义。

关键词: 氢氧同位素, 水化学, 坝基, 泉水, 定量分析