【摘要】 金沙江下游某大型水电工程进水口边坡高陡,岩体风化层较厚,地质条件复杂。为分析施工期及运行期边坡的安全性,以具体指导边坡支护施工,采用三维弹塑性损伤有限元法对边坡施工期、运行期及地震荷载作用下的岩体破坏区、塑性区、位移、应力及支护系统受力等方面进行了系统分析。结果表明,边坡整体稳定性较好,各工况下边坡的安全稳定性可以得到保证,该成果已成功应用于工程实践。更多还原

【Abstract】 A rocky slope at water intake of a large-scaled hydropower station,located at downstream of Jinsha River,is encountered with complex geological conditions of thick weathered stratum and great height in the construction. In order to analyze the slope stability in construction and operation stages so as to provide specific construction guidance for slope support,we comprehensively study the rocky slope condition by 3D elasto-plastic damage FEM,including rock mass failure area,plastic zone distribution,slope displacement and stress condition of support system considering construction period,operation period and seismic load. The results show that the integral stability of the slope under different cases is ensured,and the results had been successfully applied in the engineering practice of the project.更多还原