地下开采对露天铁矿边坡影响数值模拟分析  

Numerical Simulation Analysis of the Impact of Underground Mining on Open-pit Iron Mine Slopes

作　　者：石会泸 Shi Huilu(China Henan International Cooperation Group Co.,Ltd.,Zhengzhou Henan 450000,China)

机构地区：[1]中国河南国际合作集团有限公司,河南郑州450000

出　　处：《山西冶金》2024年第10期119-120,123,共3页Shanxi Metallurgy

摘　　要：采用FLAC3D软件,基于有限差分法,构建了包含地层岩性特征、断层情况及岩石力学参数的数值模型,旨在通过数值模拟分析地下开采对露天铁矿边坡稳定性的影响。模拟结果显示,地下开采活动导致地表沉降呈椭圆形分布,沉降值从中心向外围递减。断层的存在显著影响了沉降模式和范围,尤其是F断层附近区域。研究结果表明,地下开采对露天铁矿边坡稳定性具有重要影响,为矿区安全运营和后续开采规划提供了科学依据。This study aims to analyze the impact of underground mining on the stability of open-pit iron mine slopes through numerical simulation.A numerical model was constructed using Flac3D software and finite difference method,which includes lithological characteristics,fault conditions,and rock mechanics parameters.The simulation results show that underground mining activities result in an elliptical distribution of surface subsidence,with subsidence values decreasing from the center to the periphery.The existence of faults significantly affects the settlement pattern and range,especially in the vicinity of the F fault.The research results indicate that underground mining has a significant impact on the stability of open-pit iron ore slopes,providing a scientific basis for the safe operation of mining areas and subsequent mining planning.

关 键 词：露天铁矿 数值模拟 地下开采 

分 类 号：TD854[矿业工程—金属矿开采]