乌努格吐山铜钼矿岩质边坡稳定性分析及治理

Stability Analysis and Treatment of Rock Slope in Wunugetushan Copper-molybdenum Mine

以乌努格吐山铜钼矿的西帮胶带运输系统下方边坡为研究对象,分析F5断层对岩质边坡稳定性的影响。应用MidasGTSNX软件,通过有限元强度折减法(SRM)计算自然工况下的边坡稳定性系数。结果表明,边坡稳定性受F5断层控制,应变变形集中在断层附近,存在滑坡隐患,需采取加固措施。提出了预应力锚索、锚杆、框架梁结构加固方案,发挥了增强边坡区整体性、减小孔口处位移变形及降低锚索预应力损失的作用,使边坡抗滑力在加固区域明显增大,改善边坡体位移场,从而提高西帮胶带运输系统下方边坡的安全稳定性系数。

Taking the slope under the belt conveyor system in the west of Wunugetushan Copper-Mo-lybdenum Mine as the research object,the influence of F5 fault on the stability of rock slope is analyzed.Us-ing Midas GTS NX software,the slope stability coefficient under natural conditions is calculated by the fi-nite element strength reduction method(SRM).The results show that the slope stability is controlled by the F5 fault,and the strain deformation is concentrated near the fault.There is a hidden danger of landslide,and reinforcement measures need to be taken.The reinforcement scheme of prestressed anchor cable,an-chor bolt and frame beam structure is put forward,which can enhance the integrity of slope area,reduce the displacement deformation at the orifice and reduce the prestress loss of anchor cable.The anti-sliding force of slope is obviously increased in the reinforcement area,and the displacement field of slope body is im-proved,so as to improve the safety and stability coefficient of slope under the belt transportation system of west slope.