关键词: 长大结构面;发育特征;处理措施;泄洪闸坝基;白河水电站;

Abstract: During excavation of the dam foundation of the first-stage flood discharge sluice of Baihe Hydropower Station,three long and large structural planes were exposed,which had great influence on the stability of the dam foundation stability and the upper buildings,and once seriously restricted the smooth construction of the project and was unfavorable to the safety of the project. In this paper,the development characteristics and structural face traits of the three long and large structural planes were analyzed,and their adverse effects on the dam were evaluated. In view of different structural planes,practical and feasible treatment measures were proposed and put into practice to meet the requirements of dam foundation deformation and anti-sliding stability.The operation of this project proved that the engineering treatment effect was good. Timely and effective treatment for long and large structural planes was of great significance to the smooth construction and operation of the first phase of the power station project and to ensuring the safety of the project.

Key words: long and large structural plane; development characteristic; treatment measures; dam foundation rock mass of discharge sluice; Baihe Hydropower Station;