深部矿体开采对上盘斜坡道稳定性的影响  

Research on the impact of deep mining on the stability of the hanging wall ramp

作　　者：阎鸣泽 魏勇 刘迎 李晅辉 叶咏菁 韩斌[3] 吉坤 YAN Mingze;WEI Yong;LIU Ying;LI Xuanhui;YE Yongjing;HAN Bin;JI Kun(Jilin BMZ Mining Co.,Ltd.,Baishan134300,Jilin,China;School of Civil Engineering,Dalian University of Technology,Dalian 116024,Liaoning,China;School of Civil and Resource Engineering,Beijing University of Science and Technology,Beijing 100083,China)

机构地区：[1]吉林板庙子矿业有限公司,吉林白山134300 [2]大连理工大学土木工程学院,辽宁大连116024 [3]北京科技大学土木与资源工程学院,北京100083

出　　处：《有色金属科学与工程》2025年第2期272-279,286,共9页Nonferrous Metals Science and Engineering

基　　金：国家自然科学基金资助项目(52374115);国家重点研发计划资助项目(2018YFC1900603)。

摘　　要：针对吉林某金矿中区、北区深部矿体充填开采对上盘斜坡道稳定性影响的问题,采用数值模拟、原因分析以及现场位移监测方法对其进行了系列研究。首先,依据现场地质以及开采条件,提出6种回采方案,并对其开展了相应的数值模拟;其次,从岩体质量、开采方案和支护措施角度分析了斜坡道稳定的深层次原因;最后,采用多点位移计对斜坡道变形进行了现场监测,从现场角度验证了斜坡道的稳定性。结果表明:按照所提方案进行回采,斜坡道均具有较好的稳定性,综合来看,北区、中区矿体较优回采方案分别为方案1和方案6;良好的岩体质量、科学的采矿工艺以及有效的支护效果是促使斜坡道稳定的原因;北区440m水平和中区530m水平的监测点位移幅度分别为-3.5~3.8mm和-1.7~2.3mm,斜坡道没有出现较大的位移,具有较好的稳定性。通过开展系列研究,能为该矿提供重要的指导和决策依据,促进其难采黄金的安全开发,并可为同类型稀贵金属矿山的安全开采提供一定的参考。This paper addressed the impact of deep ore fill mining on the stability of hanging wall ramps in the central and northern regions of a gold mine in Jilin,China.A combination of numerical simulations,mechanism analysis,and displacement monitoring was employed to investigate the issue comprehensively.Initially,six mining schemes were proposed based on on-site geology and mining conditions,and corresponding numerical simulations were conducted.Next,the ramp's stability was analyzed in depth from the perspectives of rock mass quality,mining operations,and support measures.Finally,the ramp deformations were monitored in situ using a multi-point extensometer to assess its stability directly.The results indicated that all proposed mining schemes contribute to the favorable stability of the ramp.Overall,the optimal mining schemes for the northern and central ore bodies were Scheme 1 and Scheme 6,respectively.The stability was attributed to favorable rock mass quality,scientific mining techniques,and practical support measures.The displacement of the monitoring points at the 440 m level in the north region and the 530 m level in the central region were between-3.5 mm and 3.8 mm and between-1.7 mm and 2.3 mm,respectively,indicating satisfactory ramp stability with no significant displacements observed.This article provides crucial guidance and decision-making support for the mine,facilitating the safe development of its gold extraction and offering guidance for the safe mining of similar rare and precious metal deposits.

关 键 词：斜坡道 稳定性 数值模拟 机理分析 位移监测 

分 类 号：TD853[矿业工程—金属矿开采]