Article(id=1322559907174400550, tenantId=1146029695717560320, journalId=1225396423026438145, issueId=1322559901990240737, articleNumber=null, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1741104000000, receivedDateStr=2025-03-05, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1793252453845, onlineDateStr=2026-10-29, pubDate=1774368000000, pubDateStr=2026-03-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793252453845, onlineIssueDateStr=2026-10-29, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793252453845, creator=13701087609, updateTime=1793252453845, updator=13701087609, issue=Issue{id=1322559901990240737, tenantId=1146029695717560320, journalId=1225396423026438145, year='2026', volume='46', issue='3', pageStart='1', pageEnd='330', issueExtLink='null', onlineDate='null', pubDate='1774368000000', pubDateStr='2026-03-25', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793252452609, creator='13701087609', updateTime=1793252731500, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1322561071810991099, tenantId=1146029695717560320, journalId=1225396423026438145, issueId=1322559901990240737, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1322561071810991100, tenantId=1146029695717560320, journalId=1225396423026438145, issueId=1322559901990240737, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=66, endPage=73, ext={EN=ArticleExt(id=1322559907363144231, articleId=1322559907174400550, tenantId=1146029695717560320, journalId=1225396423026438145, language=EN, title=Optimization of the Top Pillar Recovery Scheme Under an Overlying Graded Tailings Backfill, columnId=null, journalTitle=Mining Research and Development, columnName=null, runingTitle=null, highlight=null, articleAbstract=

Addressing the issue of top pillar recovery beneath the overlying graded tailings backfill at the Liutangfang Iron Mine in Anhui, this study first comprehensively determined the maximum recoverable thickness of the top pillar using the load transfer line intersection method, the thickness-to-span ratio method, and the Protodyakonov arch theory. Subsequently, the maximum exposed area of the top pillar under varying stope widths was established via the Mathews stability chart method. Finally, incorporating on-site mining practices, numerical simulations of excavation were performed for two mining methods (cross-vein and strike-vein) across five stope structures. A comprehensive analysis was conducted to evaluat roof settlement, stress distribution, plastic zones, and excavated ore volume under different mining methods and stope structural parameters. The results indicate that for a stope span of 6 m, the safe thickness of the top pillar is 5 m. Based on the actual hydraulic radius derived from the Mathews stability chart method, the calculated maximum stope drift length is 30 m. When the strike-vein mining method is employed, the roof settlements corresponding to different drift pillar widths are 16 mm, 18 mm, and 20 mm; when cross-vein mining method is used, the maximum roof settlement is 33.52 mm, with the maximum roof stress increasing by 0.1 MPa. A comprehensive comparative analysis reveals that adopting the strike-vein mining method with a 4 m drift pillar keeps roof settlement within a controllable range, thereby optimally satisfying the safety, efficiency, and economic prerequisites of mine production. This scheme is projected to recover approximately 480 000 tons of top pillar resources, ensuring a smooth transition in mine production capacity and providing a reference for similar engineering projects.

, authors=Guohua SHI¹, Baoqiang PAN², Wenlue ZHOU³, Jingzhen ZHAN^{2, 3}, Pengjin YANG², authorsList=Guohua SHI, Baoqiang PAN, Wenlue ZHOU, Jingzhen ZHAN, Pengjin YANG, authorCompany=null, correspAuthors=Baoqiang PAN, 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=1322559907593830952, articleId=1322559907174400550, tenantId=1146029695717560320, journalId=1225396423026438145, language=CN, title=上覆分级尾砂充填体下顶柱回采方案优选, columnId=1226462294490657775, journalTitle=矿业研究与开发, columnName=采矿与矿山充填, runingTitle=null, highlight=null, articleAbstract=

针对安徽刘塘坊铁矿上覆分级尾砂充填体下顶柱回采问题，首先，通过荷载传递线交汇法、厚跨比法、普氏拱法理论，综合确定顶柱的最大可采厚度。然后，通过Mathews稳定图法确定不同采场宽度下顶柱最大暴露面积。最后，结合现场开采方式，对穿脉、沿脉2种开采方式及5种采场结构进行开挖数值模拟，并对不同开采方式、采场结构参数下顶板沉降、应力、塑性区及开挖矿石量进行综合分析。结果表明：当采场跨度为6 m时，顶柱安全厚度为5 m。结合Mathews稳定图法确定的真实水力半径，计算获得采场进路长度最大为30 m；当采用沿脉开采方式时，不同进路间柱宽度下顶板沉降为16 mm、18 mm及20 mm；当采用穿脉开采方式时，顶板最大沉降为33.52 mm。穿脉开采下顶板最大应力增大0.1 MPa。综合对比分析，当采用沿脉开采的方式，进路间柱为4 m时，此时顶板沉降在可控范围内，且能较好地满足矿山生产的安全、高效和经济需求，预计回采顶柱资源约48万t，既能保障矿山产能平稳过渡，也可以为其他类似工程提供借鉴。

, authors=石国华¹, 潘宝强², 周文略³, 湛景震^{2, 3}, 杨鹏锦², authorsList=石国华, 潘宝强, 周文略, 湛景震, 杨鹏锦, authorCompany=null, correspAuthors=潘宝强, authorNote=, correspAuthorsNote=, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=RGnwjB55E1myPHtT39623g==, magXml=86z4TFSWU8MX0MtY2CJclg==, pdfUrl=null, pdf=EDpjWNXTQ7VvjJwu3OttFg==, pdfFileSize=2089540, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=34tvExiJlqXj6XcepSN8aA==, mapNumber=null, fund=null)}, authors=[Author(id=1322559908122313267, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322559907174400550, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=wgchen0629@foxmail.com, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1322559909779063349, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322559907174400550, authorId=1322559908122313267, language=EN, stringName=Guohua SHI, firstName=Guohua, middleName=null, lastName=SHI, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=¹, address=^1.Sinosteel Anhui Liutangfang Mining Co., Ltd., Lu'an City, Anhui 237471, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1322559909871338038, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322559907174400550, authorId=1322559908122313267, language=CN, stringName=石国华, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=¹, address=^1．中钢集团安徽刘塘坊矿业有限公司，安徽 六安市　237471, bio={"content":"

石国华（1978—），男，河北馆陶人，高级工程师，主要从事矿山开采工艺研究。E-mail: wgchen0629@foxmail.com

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石国华（1978—），男，河北馆陶人，高级工程师，主要从事矿山开采工艺研究。E-mail: wgchen0629@foxmail.com

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