基于强度折减法的某水泥用灰岩矿露天边坡稳定性分析

Stability Analysis of Open Pit Slope of a Building Stone Limestone and Basalt Mine Based on Strength Reduction Method

根据某建筑石料矿边坡的地质勘探数据,按最终边坡在矿区所处部位、坡向、高度等因素,将最终边坡划分为5个分区,即A区、B区、C区、D区、E区。利用FLAC3D软件选取两个分区的典型剖面建立边坡的有限元模型,应变增量逐渐增大,表明边坡的变形加剧。当折减系数达到某一临界值时,剪切应变增量在边坡潜在滑动面上达到最大值,此时边坡处于极限平衡状态。通过对比不同剖面的最大剪切应变增量云图,发现潜在滑动面的位置和范围,从而评估边坡的整体稳定性。通过本研究及时发现边坡的不稳定迹象,采取相应的工程措施,确保边坡的安全稳定。以期为进一步研究露天边坡稳定性提供理论基础和实践指导。

According to the geological exploration data of the slope of A building stone mine,the final slope is divided into 5 zones,namely,zone A,zone B,Zone C,zone D and zone E,according to the location,slope direction and height of the final slope in the mining area.The finite element model of the slope is established by using FLAC3D software.The strain increment increases gradually,indicating that the slope deformation intensifies.When the reduction coefficient reaches a certain critical value,the shear strain increment reaches the maximum value on the potential sliding surface of the slope,and the slope is in the ultimate equilibrium state.By comparing the maximum shear strain increment cloud map of different sections,the location and range of potential sliding surfaces are found,and the overall stability of the slope is evaluated.Through this study,the unstable signs of the slope are found in time,and corresponding engineering measures are taken to ensure the safety and stability of the slope.In order to provide theoretical basis and practical guidance for further study of open-pit slope stability.