针对斜交断层对逆倾边坡稳定性的影响,基于岩体结构控制论,结合平庄西露天矿工程,分析了在斜交断层作用下逆倾边坡破坏模式及滑坡机理,通过AutoCAD、ANSYS、3Dslope软件,建立三维边坡模型,计算边坡安全系数。计算结果表明:断层影响区的三维滑坡模式为沿断层面、侧界面和弱层面的楔体滑动,从而明确了三维滑体的最危险空间形态;通过计算不同侧界面位置下的安全系数,得出了斜交断层对边坡的影响范围;根据稳定性分析结果,提出控制开采方案,为露天矿安全生产提供技术指导。

With the stability of a counter-tilt slope under bias chasm in mind, based on the rock mass structure cybernetics and combined with the west open-pit mine project of Ping Zhuang, this paper analyzes the failure mode and the landslide mechanism of the counter-tilt slope under bias chasm, using AutoCAD, ANSYS and 3Dslope to model the three-dimensional slope and calculate the slope stability coefficient. The calculation results show that: the three-dimensional landslide modes of the chasm affected zone are: the wedge sliding along the fault plane, the side interface and the weak interface, thus the most dangerous space form of the three-dimensional sliding body is identified; from the stability coefficient under different side interface locations, the influence of the oblique chasm on the slope is revealed. According to the results of the stability analysis, the control scheme of the mining plan is proposed to provide a technical guidance for the open pit mine production safety.