摘要
我国大型露天煤矿主要分布在西北部的黄土高原地区,以黄土为基底的排土场形成后,黄土基底的工程性质将发生改变并形成演化弱层,演化弱层对排土场边坡稳定性起到控制作用,由于弱层的存在,边坡容易形成"坐落-滑移式"破坏。本次分析是基于强度折减理论,应用FLAC3D对排土场边坡变形进行数值模拟,展现出排土场边坡变形机理。依据数值模拟结果,获得排土场边坡的最危险滑面和多处潜在滑动面。为排土场边坡失稳的预测及防治工作提供科学依据。
The large surface mining in China are mainly distributed in northwestern parts of the Loess Plateau region,the Loess dump for the formation of the basement.the basement of the engineering properties of loess will change and form evolution of the soft layer after the loess based earth dump be formed.The stability of dump slope are controlked by evolution of the soft laye.Since the existence of soft layers,slope will form ＂located-Sliding＂ damage easily.Based on the theory of strength reduction,applied the FLAC3D for numerical simulation to dump slope deformation in this time,and revealed dump slope deformation mechanism.According to the numerical simulation results,acquired the most dangerous dump slope slip surface and much more potentially sliding face.Provided scientific basis for dump slope instability of prediction and prevention.
出处
《微计算机信息》
2011年第1期262-263,259,共3页
Control & Automation
关键词
排土场边坡
数值模拟
强度折减
滑坡机理
Dump slope
Numerical simulation
Strength reduction
Landslide mechanism
