【摘要】 以董箐水电站为例,采用三维有限元法分析了溢洪道泄槽段边坡施工期和运行期各种工况下的变形稳定性。为确保边坡安全,在加强监测工作的情况下采用预应力锚索和系统锚杆同时加固方案。结果表明,泄槽段进口处两侧边坡台阶处均存在拉剪屈服危险,暴雨和地震是影响边坡稳定的最重要因素,当考虑地震和暴雨联合作用时边坡将处于较危险状态,采取的防范措施切实可行。更多还原

【Abstract】 Taking the Dongqing Hydropower Station for an example,three-dimensional finite element method is applied to analyze the deformation and stability of slope of chute section of spillway in different conditions during the construction period and the operation period.For ensuring slope safety,reinforcement plan of prestressed cables and system anchors should be adopted under strengthening the monitoring.The results show that the risk of tension and shear yield may occur in both sides of steps of entrance of chute section;storm and earthquake are the most important factors for influence of slope stability;when considering both of storm and earthquake,the slope will be more dangerous;the preventive measure taken is practicable.更多还原