【摘要】 软弱结构面一直是水电工程建设中的一个重要工程地质问题 ,选取合理的力学参数对大坝建基面的选取及未来坝基抗滑稳定性具有重大意义。本文在大量试验资料基础上 ,研究了沉积岩地区某重力坝电站坝址区软弱夹层粒度成分和抗剪强度参数之间的相关关系 ,建立了不同稠度状态下的相关方程。并结合《混凝土重力坝设计规范》中提出的用粒度成分定量指标选取软弱结构面抗剪强度参数 ,对软弱结构面抗剪强度参数取值问题进行了探讨。更多还原

【Abstract】 The weak structural plane is an important engineering-geological problem in construction of hydroelectric project. To choose rational mechanical parameters is of great significance for determining the dam foundation surface and the stability against sliding. In this paper, the correlation between granulometric composition and shear strength parameter weak interlayer in sedimentary rocks is studied, and the correlation equations are established for different consistency states. Finally, in combination with quantitative indexes determinied in the code for ”Design of Concrete Gravity Dams”, the shear strength parameters of weak structural plane are determinied.更多还原