锦屏一级水电站左岸高边坡施工动态仿真模拟

依托锦屏一级水电站左岸高边坡开挖,选取典型计算剖面,利用二维有限元模型,从边坡应力变化、位移变化等方面进行了高边坡施工过程的动态仿真模拟。结果表明:卸荷效应随着开挖进度愈发明显。开挖完成后,部分断层上盘岩体的变形明显比下盘岩体要大。这表明这些断层有微小的错动变形,在多处裂缝、断层等部位出现局部的塑性屈服。

Dynamic simulation of high slope construction on left bank of Jinping I Hydropower Station

Based on the excavation of the high slope on the left bank of JinpingⅠHydropower Station， a dynamic simulation on the process of the high slope construction is made in the aspects of the stress variation， the change of displacement， etc. of the slope by selecting a typical calculation section with a 2D finite element model. The result shows that the unloading effect is to be gradually obvious along with the excavation progress. The deformation of the upside rock mass is obviously large than that of the downside for a part of faults therein after the excavation. This indicates that the micro-discontinuous deformations are there in these faults， while the local plastic yieldings occur at the locations of several fissures and faults as well.