基于单元安全度的露井联采边坡稳定性分析

Stability analysis of slopes at an open-underground combined mine based on zone safety degree

传统边坡稳定性分析方法只局限于二维的单一坡体剖面,且最终只得到一个安全系数,针对传统分析方法的缺陷,引入了单元安全度分析方法,采用FLAC3D内嵌FISH语言编写了计算单元安全度的程序,并结合某露天地下联合开采矿山实例进行计算,得到了该露天矿边坡单元安全度的分布.结果表明:单元安全度小于1的地方集中在东部边帮和南端帮边坡,最小单元安全度为0.91,出现在南端帮边坡处,为矿山安全生产和矿石充分回采提供科学指导依据.

The traditional slope stability analysis method is limited to only single slope body profile of two dimensions,and finally only one safety coefficient is achieved.To overcome this defect,this paper introduces the analysis method of zone safety degree,and with the help of the embedded FISH language of FLAC3D,the program of zone safety degree calculation is written,the distribution of zone safety degree in this mine is gained taking an open-underground combined mine as example.The results show that,the places with zone safety degree less than 1 are concentrated in the eastern and south sides of slope,and the smallest zone safety degree 0.91 appeared in the southern slope,which provides scientific guidance to the safe production of the mine and full recovery of the ore.