Article(id=1314907114116579513, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1314907112854089785, articleNumber=null, orderNo=null, doi=10.3969/j.issn.0253-6099.2025.06.002, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1752249600000, receivedDateStr=2025-07-12, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1791427885797, onlineDateStr=2026-10-08, pubDate=null, pubDateStr=null, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1791427885797, onlineIssueDateStr=2026-10-08, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1791427885797, creator=13701087609, updateTime=1791427885797, updator=13701087609, issue=Issue{id=1314907112854089785, tenantId=1146029695717560320, journalId=1235980550691926019, year='2025', volume='45', issue='6', pageStart='1', pageEnd='228', issueExtLink='null', onlineDate='null', pubDate='1764518400000', pubDateStr='2025-12-01', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1791427885497, creator='13701087609', updateTime=1791430521754, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1314918170201252492, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1314907112854089785, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1314918170201252493, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1314907112854089785, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=8, endPage=13, ext={EN=ArticleExt(id=1314907115941101754, articleId=1314907114116579513, tenantId=1146029695717560320, journalId=1235980550691926019, language=EN, title=Mining Sequence and Stability During Transition from Open-Pit to Underground Mining in Miaochong Iron Mine, columnId=1236276106018484431, journalTitle=Mining and Metallurgical Engineering, columnName=MINING, runingTitle=null, highlight=null, articleAbstract=

To meet the requirements during a 2-year transition period from open-pit to underground mining in Miaochong Iron Mine, its productivity continuity and mining stability were analyzed. Based on ore reserve estimation, Panel ① and Panel ② at the southern end of the roadway at midsection (370 m) of ore body are decided to be an initial mining plan for the transition period. Then, a model including ore bodies, rock formation, open-pit mine and underground roadways is built with FLAC^3D software, which is then adopted to analyze the displacement, stress and plastic zone distribution characteristics of the open-pit and roadways at the midsection (370 m) during the transition period. The results show that the ore quantities in Panel ① and Panel ② at the midsection (370 m) during the transition period can ensure production capacity requirement, but also is sufficient for subsequent mining. It is found that the overall displacement of the open-pit and roadways at the midsection (370 m) is less than 5 mm, and compressive stress becomes dominant in the stress distribution, which is far lower than the stress resistance of the rock mass. There is no large-scale continuous plastic zone, indicating good stability and small impact by mining disturbance. In practical production, it is recommended that a segmented millisecond blasting should be adopted to achieve a staggered blasting operation between open-pit and underground mine. Besides, efforts should be intensified in monitoring open-pit slope and underground roadways to ensure safe production during the transition from open-pit to underground mining.

, authors=Quan JIANG¹, Jielin LI², Yongfei YE¹, Jianhui QIU², authorsList=Quan JIANG, Jielin LI, Yongfei YE, Jianhui QIU, authorCompany=null, correspAuthors=Jianhui QIU, 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=1314907116251480251, articleId=1314907114116579513, tenantId=1146029695717560320, journalId=1235980550691926019, language=CN, title=庙冲铁矿露天转地下开采过渡期协同开采顺序及稳定性研究, columnId=1236276106219811026, journalTitle=矿冶工程杂志, columnName=采矿, runingTitle=null, highlight=null, articleAbstract=

针对庙冲铁矿露天转地下开采2年过渡期的生产需求，开展产能接续分析与开采顺序及稳定性研究。通过矿体储量估算，确定过渡期首采方案为370 m中段南端的盘区①和盘区②，利用FLAC^3D软件构建包含矿体、岩层、露天采坑及地下巷道的模型，分析过渡期露天采坑与370 m中段巷道的位移、应力及塑性区分布特征。结果表明，过渡期370 m中段盘区①和盘区②的矿量可满足产能需求且留有备采矿量；露天采坑及370 m中段巷道的整体位移均小于5 mm，应力分布以压应力为主，且远低于岩体抗压能力，未出现大范围贯通塑性区，稳定性良好，开采扰动影响较小。实际生产中，建议采用分段微差爆破技术，实行露天与地下错开爆破作业模式；同时加强露天边坡及井下巷道的安全监测，确保矿山露天转地下开采过渡期安全生产。

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蒋权（1985—），男，湖南东安人，高级工程师，从事采矿工程设计、管理及市场运营工作。E-mail: 329157458@qq.com

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蒋权（1985—），男，湖南东安人，高级工程师，从事采矿工程设计、管理及市场运营工作。E-mail: 329157458@qq.com

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