中文摘要：

水库蓄冰使库岸边坡稳定性变化较大，以甘肃省九句峡库区燕子坪（28#）滑坡为例，采用GPS对滑坡的位移进行定期监测，分析蓄水对库岸边坡稳定性的影响规律，并采用边坡熵的方法进行验证。分析结果表明：①蓄水过程可分为3个阶段，包括蓄水位0-70m，70-100m和100-130m3个阶段，且每个蓄水阶段对滑坡的影响程度不同。②蓄水位100-115m与115-130m两个蓄水范围内滑坡的稳定性受影响程度不同。③采用边坡熵的方法验证蓄水与库岸滑坡稳定性的关系是适用的，对于其他类似研究可以提供借鉴作用。

英文摘要：

The landslide stability is affected by the reservoir impoundment in a large degree, taking an exam- ple of Yanziping （ 28#） Landslide of Jiudianxia reservoir in Gansu province. The landslide displacement was monitored by using GPS regularly for analyzing the law of the landslide stability affected by the the impound- ment, and the law is validated by using the method of slope entropy. The results show that ： （ 1 ） the process of impoundment can be divided into three stages including the 0 - 1/2, 1/2 to 3/4 and 3/4 above the stage of the storage level, which is affected to different influence degrees; （2） the landslide stability is affected at different levels between the range of water level Ⅰ （ 100 m - 115 m） and Ⅱ （ 115 m - 130 m） in different degree ; （ 3 ） it is suitable that the relationship between impoundment and the stability of reservoir bank landslide is validated by using the method of slope entropy with being provided by other similar studies.