前言 铜街子电站溢流坝布置在河床右深槽。坝基分布有层间错动带及断层破碎带等软弱层面,抗剪指标低,抗滑稳定安全度达不到设计要求,尤以第四孔抗滑稳定性最差(图1),必须采取工程措施予以解决。在设计中研究了设置抗剪桩、前后齿槽以及混凝土塞等处理方案,进行了各方案的平面有限元计算,得出抗滑安全系数、应力、变位以及滑裂区分布等成果,并与“刚体极限平衡法”的计算结果进行了对比分析。 Preface Copper Street sub-station overflow dam layout in the river bed right deep groove. The dam foundation is distributed with weak layers such as interlayer fault zone and fault fracture zone. The shear resistance index is low, and the safety of anti-slide stability can not meet the design requirements. Especially the fourth hole has the worst anti-sliding stability (Figure 1) and must be taken Engineering measures to be resolved. In the design, the treatment schemes such as anti-shear piles, front and back gullets and concrete plugs were set up. The plane finite element calculation of each scheme was carried out and the results of sliding safety factor, stress, displacement and distribution of slip zone were obtained. And “rigid body limit equilibrium method” of the results of a comparative analysis.