基于三维稳定性算法的含水边坡形态优化研究

Research on Shape Optimization of Water-bearing Slope Based on Three-dimensional Stability Algorithm

针对南芬露天铁矿南端帮含水边坡形态优化问题,应用平面凹陷形边坡三维稳定性算法配合二维刚体极限平衡法及对南芬露天铁矿南端帮含水边坡进行形态优化。研究结果表明,南芬露天铁矿南端帮到界边坡形态为:+262平盘宽度40m,+238、+214平盘宽8m,+178平盘宽12m;南端帮到界边坡的破坏形式属于圆弧滑动;岩土体自重、南部河流渗流弱化及自身强度特征是造成南芬露天铁矿南端帮到界边坡发生圆弧滑动的诱发因素。

In order to optimize the shape of the water-bearing slope at the south side of Nanfen open-pit Iron Mine,the three-dimensional stability algorithm of the sunken slope and the two-dimensional rigid body limit equilibrium method are applied to optimize the shape of the water-bearing slope at the south side of Nanfen open-pit Iron Mine.The results show that the slope shape of the south side of Nanfen open-pit Iron Mine is as follows:+262 flat plate width 40m,+238,+214 flat plate width 8m,+178 flat plate width 12m;The failure form of the south side slope to the boundary is circular sliding.The gravity of rock and soil mass,the weakening of seepage flow in the southern river and the characteristics of its own strength are the induced factors that cause the circular sliding of the slope at the southern end of Nanfen open-pit Iron Mine.