基于Flac^(3D)的某金矿回采方案优化数值模拟研究  

Numerical experimental study on optimization of mining scheme in a gold mine based on Flac^(3D)

作　　者：王磊 闫刚 付佳杰 钟健 Wang Lei;Yan Gang;Fu Jiajie;Zhong Jian(Canzhuang Gold Mine,Zhaojin Mining Industry Co.,Ltd.;School of Resources and Civil Engineering,Northeastern University)

机构地区：[1]招金矿业股份有限公司蚕庄金矿 [2]东北大学资源与土木工程学院

出　　处：《黄金》2024年第6期11-15,共5页Gold

基　　金：国家自然科学基金青年项目(52004053);中央高校基本科研业务专项资金资助-国防重大培育项目(N2101040)。

摘　　要：为了探究矿床开采顺序对地表沉陷的影响,以某金矿的生产实际问题为工程背景,拟定不同开采方案,并采用Flac^(3D)软件数值模拟的方法,将地表监测的变形量及塑性区体积作为评价指标,分析不同回采方案下的地表移动规律。研究结果表明:2个中段同时开采产生的扰动会对地表移动有较大影响,第七中段与第八中段同时回采时,地表沉陷量最小;塑性区破坏体积与开采顺序有较大的关系,同时开采的中段总体积越小,矿山整体开采结束后被破坏的塑性区体积越小。研究结果为矿山安全高效开采提供参考依据。In order to explore the effect of mining sequence on surface subsidence,taking the practical production problems of a gold mine as the engineering background,different mining schemes were designed.The Flac^(3D)software was used for numerical simulation,with surface deformation magnitude and plastic zone volume monitored as evaluation indicators to analyze the movement patterns of the surface under different mining schemes.The research results indicate that disturbances generated by simultaneous mining of two levels have a significant impact on surface movement,and the smallest surface subsidence occurs when the seventh and eighth levels are simultaneously mined.The volume of plastic zone damaged is closely related to the mining sequence,and the smaller the total volume of levels mined simul-taneously,the smaller the volume of plastic zones damaged after the completion of overall mining in the mine.The research findings provide a reference basis for safe and efficient mining in the mine.

关 键 词：充填采矿 回采顺序 数值模拟 地表移动 地表沉陷 

分 类 号：TD853.34[矿业工程—金属矿开采]