温州霓屿料场露天矿边坡稳定性分析

Stability Analysis of Slope in Wenzhou Niyu Quarry Open-pit Mine

以温州市专供料场露天矿高边坡为工程依托,对边坡局部水平位移和竖向位移进行实时监测分析,并利用岩土分析软件FLAC 3D对实时监测区域进行数值模拟分析,从监测和数值模拟2个方面来判断边坡的稳定性。根据监测和模拟分析结果可知:边坡在监测初期位移值变化较大,之后变化值便趋于平缓,最终累计位移值在安全警戒值内,边坡整体处于稳定的状态,但不排除局部出现滑坡的可能性;边坡的坡脚处容易出现挤压破坏,坡面可能发生现拉应力导致的地表裂缝,应对边坡的坡脚和表面进行安全支护;高边坡的累计位移值与坡高成一定的正比关系,随着高度的增高,位移值也逐渐增大。

Based on the high slope of the open-pit mine in Wenzhou special supply yard,this paper conducts real-time monitoring and analysis of the local horizontal and vertical displacement of the slope,and uses the geotechnical analysis software FLAC 3 D to perform numerical simulation analysis on the real-time monitoring area.Monitoring and numerical simulation are used to judge the stability of the slope.According to the results of monitoring and simulation analysis,it can be seen that the displacement value of the slope changes greatly in the initial monitoring period,and then the change value tends to be gentle.The final cumulative displacement value is within the safety warning value,and the slope is in a stable state as a whole,but local occurrence is not ruled out.The possibility of landslides;the toe of the slope is prone to compression failure,and the surface cracks caused by the existing tensile stress may occur on the slope.The toe and surface of the slope should be safely supported;the cumulative displacement value of the high slope The slope height has a certain proportional relationship,and the displacement value gradually increases as the height increases.