Abstract: Bai zhang reservoir built in 1958 is a monotone dam. Its slope has been renovated eight times, and the gradient has been lower range from 1:2.0 to 1:5.0. In spite of this, the phenomena of the crack landslide still exist. By introducing and analyzing several situations of the landslide and treatment, this paper considers that the reason of this situation is that dam materials were designed improperly and the treatment for the size of dam slope by traditional at the beginning was unsuitably. Therefore, the quality of dam material should be firstly analyzed, and the best alternative method is to replace the landslide mass with well-graded and high shear-strength earth materials. This method is deserved deep exploration and used for reference.?

摘要： 百丈水库大坝为1958年修建的均质土坝，坝坡历经8次整治放缓至1:2.0 ~ 1:5.0，但仍存在裂缝滑坡现象。本文通过介绍并分析历次滑坡及处理情况，认为该坝多次滑坡的原因为坝料设计不当及传统的从坝坡尺寸着手处理的整治方法欠妥。因而，提出应从其筑坝土料性质分析，采用级配好、抗剪强度大的优质土料换填滑坡体土料的办法处理。这一方法值得深入探索并加以借鉴。