引水线路滑坡地震动力响应及稳定性分析

WaterDiversion Line Landslide Earthquake Dynamic Response and Stability Analysis

西部地区斜坡失稳破坏是一种常见的地质灾害。在地震作用下已有滑坡进一步发生破坏的可能性明显增加,进行滑坡区地震动力响应及稳定性分析具有重要意义。引黄济宁工程引水线路经过很多滑坡区。以引水线路中坝滑坡为例,应用Arcgics和犀牛软件等建立三维数值计算模型,利用FLac 3D有限差分法数值分析软件,通过C++语言编制对数多段折线动力本构模型,计算分析模型地震动力响应特征,分析地震动力作用下蓄水前后滑坡体的稳定性,为考虑地震作用影响的引水线路设计施工提供依据,也为类似工程的地震影响动力分析计算提供借鉴。

The slope instability failure is a common geological hazard in western China.Under the earthquake action,existing landslide further damage possibility has obviously increased.Thus to carry out landslide area earthquake dynamic response and stability analysis have significant meaning.The Yellow River to Xining water diversion project line should pass through many landslide areas.Taking the Zhongba landslide on the line as an example,applied Arcgics and Rhino software established 3D numerical computation model,using FLAC 3D finite difference method numerical analysis software,through C++language has compiled logarithmic multi-segment broken-line dynamic constitutive model to compute and analyze model earthquake dynamic response features and landslide stability before and after impounding under earthquake dynamic action.The study can be the basis for water diversion line design and construction impacted by earthquake,and provided reference for similar project earthquake impact dynamic analysis and computation.