基于极限平衡法的米拉多铜矿边坡稳定性分析与优化  

Stability Analysis and Optimization of Slope of Mirador Copper Mine Based on the Limit Equilibrium Method

作　　者：余青龙 周生 李广泽 YU Qinglong;ZHOU Sheng;LI Guangze(China Railway Construction Tongguan Investment Co.,Ltd.)

机构地区：[1]中铁建铜冠投资有限公司,安徽省铜陵市244000

出　　处：《现代矿业》2025年第3期25-30,共6页Modern Mining

摘　　要：边坡稳定性对露天采场安全生产至关重要,厄瓜多尔米拉多铜矿边坡面积广、高差大,属于超高型边坡。为了分析露天开采境界设计中边坡的稳定性,将现场典型的边坡划分为7个区域,应用Morgenstern-price法计算3种荷载组合下各个边坡的稳定性。结果表明:Ⅰ区1-1、Ⅲ区3-3、Ⅳ区4-4、Ⅶ区7-7剖面在不同荷载下整体最小安全系数符合规范要求;Ⅱ区2-2、Ⅵ区6-6剖面进行降水后,在不同荷载下整体最小安全系数符合规范要求;Ⅴ区5-5剖面采取降水措施并调整边坡参数后,在不同荷载下整体最小安全系数符合规范要求。Slope stability is very important to the safety production of open-pit stope.The slope of Mi-rador Copper Mine in Ecuador has a wide area and a large height difference,which belongs to the super high slope.In order to analyze the stability of slope in the design of open-pit mining boundary,the typical slope is divided into seven regions,and the Morgenstern-price method is used to calculate the stability of each slope under three load combinations.The results show that the overall minimum safety factor of section 1-1 in area I,section 3-3 in area III,section 4-4 in area IV and section 7-7 in area VII under different loads meets the requirements of the specification.After the precipitation of the 2-2 section of the II area and the 6—6 section of the VI area,the overall minimum safety factor under different loads meets the re-quirements of the specification.After the dewatering measures are taken and the slope parameters are adjust-ed in the 5-5 section of the V area,the overall minimum safety factor meets the requirements of the specifi-cation under different loads.

关 键 词：露天矿边坡 边坡稳定性 安全系数 极限平衡法 

分 类 号：P61[天文地球—矿床学]