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In view of the mining problems faced by Chalukou molybdenum-lead-zinc polymetallic mine in the Greater Khingan Mountains under deep (750-1 000 m), complex structure and volcanic rock geological conditions, the optimization of filling mining height based on rock mechanics and numerical simulation was carried out. Firstly, the mechanical parameters of the main rock mass in the mining area were obtained by rock mechanics tests, and a three-dimensional geomechanical model that accurately reflects the geological structure and topographic characteristics of the mining area was constructed using 3Dmine, ANSYS and Surfer software. Then, FLAC3D numerical simulation was used to systematically compare and analyze the influence of three mining heights of 60 m, 90 m and 120 m on the stability of stope and surface. The results show that the mining height of 60 m can effectively inhibit the expansion of plastic zone and control the displacement and stress concentration, which is the safe and economical optimal mining scheme. Although the mining height of 90 m can basically maintain the stability of the stope, there is a risk of local plastic zone penetration. The mining height of 120 m leads to the horizontal deformation, inclination and curvature of the surface far exceeding the safety limit. The research results clarify the safe mining height threshold of the complex deep orebody, revealing the internal mechanism of the increase of mining height leading to the penetration of plastic zone, which provide a theoretical reference for the optimization of deep filling mining scheme under similar complex geological conditions.

, authors=Shancun LI, authorsList=Shancun LI, authorCompany=null, correspAuthors=null, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1322559992507519767, articleId=1322559992104866581, tenantId=1146029695717560320, journalId=1225396423026438145, language=CN, title=大型钼铅锌多金属矿深部充填开采高度优化研究, columnId=1226462294582936453, journalTitle=矿业研究与开发, columnName=深部、深海矿产资源勘探与开发, runingTitle=null, highlight=null, articleAbstract=

针对大兴安岭岔路口钼铅锌多金属矿在深部（750~1 000 m）、复杂构造与火山岩地质条件下面临的开采难题，开展了基于岩石力学与数值模拟的充填开采高度优化研究。首先，通过岩石力学试验获取了矿区主要岩体的力学参数，并综合运用3Dmine、ANSYS与Surfer软件，构建了精确反映矿区地质构造与地形特征的三维地质力学模型。然后，采用FLAC3D数值模拟，系统对比分析了60 m、90 m和120 m三种开采高度对采场及地表稳定性的影响。结果表明：60 m开采高度能有效抑制塑性区扩展，控制位移与应力集中，是实现安全与经济最优的开采方案；90 m开采高度虽能基本维持采场稳定，但存在局部塑性区贯通风险；120 m开采高度则导致地表水平变形、倾斜及曲率均远超安全限值。研究成果明确了该复杂深部矿体的安全开采高度阈值，揭示了开采高度增大导致塑性区贯通的内在机制，可为类似复杂地质条件下的深部充填采矿方案优化提供理论参考。

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李山存（1981—），男，青海乐都人，硕士，高级工程师，主要从事金属非金属矿山采矿工程设计及矿山安全方面的研究。E-mail:shancun1981@163.com

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李山存（1981—），男，青海乐都人，硕士，高级工程师，主要从事金属非金属矿山采矿工程设计及矿山安全方面的研究。E-mail:shancun1981@163.com

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