米拉多铜矿三期排土场终了边坡稳定性研究  

Research on Stability of Third Phase Waste Dump of End Slope of Mirador Copper Mine

作　　者：莫逸 周生 雷丁丁 MO Yi;ZHOU Sheng;LEI Dingding(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64-68,共5页Modern Mining

摘　　要：米拉多铜矿南排土场自基建剥离和开始堆排以来,受降雨、地震影响,多次发生滑坡、泥石流等灾害。为解决此问题,以南排土场终了设计整体稳定性为研究对象,在首期、二期排土场稳定性研究结论的基础上,利用GeoStudio软件对三期排土场终了边坡进行稳定性研究。结果表明,三期排土场地下水浸润线随降雨的持续而有所升高,在采取块石堆排优化措施后,排土场在自重+自然地下水+施工荷载、自重+降雨入渗+施工荷载、自重+地震+施工荷载3种工况下的最小安全系数均满足规范要求,排土场边坡在设计工况下处于稳定状态,其中地震工况为排土场边坡的相对危险工况,研究为提高矿山安全性、解决相关问题等提供了一定的参考。Since the start of the pile discharge of the south waste dump of Mirador Copper Mine from the infrastructure stripping,landslides,mudslides and other disasters have occurred several times due to rainfall and earthquakes.The overall stability of the end design of the south waste dump is the object of study,and on the basis of the conclusions of the stability study of the first-phase and the second-phase dis-charge yard,GeoStudio software is utilized to carry out a stability study of the end slopes of the three-phase waste dump.The results show that the groundwater infiltration line of the three-phase waste dump increases with the continuation of rainfall,and after the optimization measures of block pile discharge,the minimum safety coefficient of the three conditions of the waste dump,namely,self-weight+natural groundwater+construction load,self-weight+rainfall infiltration+construction load,and self-weight+seismic+con-struction load,meets the specification requirements,and the slopes of the waste dump are in a stable state under the design conditions,among which the seismic condition is the most hazardous condition for the slope of the waste dump.The seismic condition is the most dangerous working condition.

关 键 词：排土场 边坡稳定性分析 数值模拟 安全系数 

分 类 号：P64[天文地球—地质矿产勘探]