Article(id=1322559821237309650, tenantId=1146029695717560320, journalId=1225396423026438145, issueId=1322559792544072145, 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=1736524800000, receivedDateStr=2025-01-11, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1793252433356, onlineDateStr=2026-10-29, pubDate=1769270400000, pubDateStr=2026-01-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793252433356, onlineIssueDateStr=2026-10-29, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793252433356, creator=13701087609, updateTime=1793252433356, updator=13701087609, issue=Issue{id=1322559792544072145, tenantId=1146029695717560320, journalId=1225396423026438145, year='2026', volume='46', issue='1', pageStart='1', pageEnd='306', issueExtLink='null', onlineDate='null', pubDate='1769270400000', pubDateStr='2026-01-25', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793252426515, creator='13701087609', updateTime=1793252675339, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1322560836246286849, tenantId=1146029695717560320, journalId=1225396423026438145, issueId=1322559792544072145, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1322560836246286850, tenantId=1146029695717560320, journalId=1225396423026438145, issueId=1322559792544072145, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=69, endPage=78, ext={EN=ArticleExt(id=1322559821430247635, articleId=1322559821237309650, tenantId=1146029695717560320, journalId=1225396423026438145, language=EN, title=Optimization of Isolated Pillar Thickness and Stability Analysis for Open-Pit to Underground Mining, columnId=null, journalTitle=Mining Research and Development, columnName=null, runingTitle=null, highlight=null, articleAbstract=

To address the problems of the determination of the safe thickness and stability of isolated pillars during open-pit to underground mining, taking a domestic metal mine with open-pit to underground mining as the engineering background, dynamic simulation and comparative analysis were carried out on the stopes under the conditions of different isolated pillar thicknesses and different stoping sequences based on the particle safety factor calculation method derived from the twin-shear unified strength theory and numerical simulation. The results are shown as follows. Firstly, when the mining room width is 20 m, the optimal safe thickness of the isolated pillar in the mining room is 39.37 m. At this time, the minimum value of the particle safety factor at the bottom surface of the isolated pillar is 1, which meets the engineering safety requirements. Considering the actual engineering conditions, the isolated pillar thickness is determined to be 40 m. Secondly, the particle safety factor at the bottom surface of the isolated pillar shows a nonlinear growth trend with the increase of thickness, with similar spatial distribution characteristics: the safety factor in the contact area with the hanging wall surrounding rock is lower than that of the footwall, the safety factor at the center of the bottom edge in the width direction of the roof is lower than that at both ends, and the safety factor shows an increasing trend from west to east in the length direction of the roof. Thirdly, mining disturbance leads to the deterioration of the stability of isolated pillars. As the exposed area of the goaf increases, the dangerous range expands accordingly. The closer the particles are to the goaf, the smaller their particle safety factor will be, and the dangerous area migrates from the center of the bottom surface to the midpoint of the long side with the advance of stoping. The proposed thickness optimization method for isolated pillars based on the critical safe thickness threshold and dynamic risk evolution can provide a reference for the problem of determining the safe thickness of isolated pillars in open-pit to underground mining mines.

, authors=Bingjie ZHANG, Xiaoqing CHEN, Yujiang YANG, Xinrong WANG, Jiangdong ZHAO, authorsList=Bingjie ZHANG, Xiaoqing CHEN, Yujiang YANG, Xinrong WANG, Jiangdong ZHAO, authorCompany=null, correspAuthors=Yujiang YANG, 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=1322559821769986260, articleId=1322559821237309650, tenantId=1146029695717560320, journalId=1225396423026438145, language=CN, title=露天转地下开采隔离矿柱厚度优化及稳定性分析, columnId=1226462294490657775, journalTitle=矿业研究与开发, columnName=采矿与矿山充填, runingTitle=null, highlight=null, articleAbstract=

针对露天转地下开采过程中隔离矿柱安全厚度留设及稳定性问题，以国内某露天转地下开采金属矿山为工程背景，基于双剪统一强度理论的质点安全系数计算方法与数值模拟，对不同隔离矿柱厚度、不同回采步骤条件下的采场进行动态模拟和对比分析。结果表明:（1）矿房宽度为20 m时，采场隔离矿柱最优安全厚度为39.37 m，此时隔离矿柱底面质点安全系数最小值为1，满足工程安全需求，结合工程实际考虑隔离矿柱厚度为40 m；（2）隔离矿柱底面质点安全系数随厚度增加呈非线性增长趋势，空间分布特征相近：上盘围岩接触区域安全系数低于下盘，顶板宽度方向上底边中心处安全性低于两端，顶板长度方向自西向东呈递增趋势；（3）开采扰动导致隔离矿柱稳定性劣化，随着采空区暴露面积的增加，危险范围随之扩大，越靠近采空区质点安全系数越小，危险区域随回采推进由底面中心迁移至长边中点。研究提出的基于临界安全厚度阈值与动态风险演化的隔离矿柱厚度优化方法，可为露天转地下开采矿山隔离矿柱安全厚度留设问题提供参考。

, authors=张冰洁, 陈晓青, 杨宇江, 王薪荣, 赵江东, authorsList=张冰洁, 陈晓青, 杨宇江, 王薪荣, 赵江东, authorCompany=null, correspAuthors=杨宇江, authorNote=, correspAuthorsNote=, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=evQdX2PqRqsPEVAK3yYphA==, magXml=/uaabqJF5P4xETyWERRyOQ==, pdfUrl=null, pdf=cIFDS4nmHJMmwV9+OSXCTg==, pdfFileSize=5905875, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=71EuYjWGjkm5CxAzjU496g==, mapNumber=null, fund=null)}, authors=[Author(id=1322559822210388185, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322559821237309650, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=2453117287@qq.com, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1322559822294274267, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322559821237309650, authorId=1322559822210388185, language=EN, stringName=Bingjie ZHANG, firstName=Bingjie, middleName=null, lastName=ZHANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=null, address=School of Mining Engineering, University of Science and Technology Liaoning, Anshan, Liaoning 114051, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1322559823955218652, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322559821237309650, authorId=1322559822210388185, language=CN, stringName=张冰洁, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=null, address=辽宁科技大学 矿业工程学院，辽宁 鞍山市　114051, bio={"content":"

张冰洁（1998—），女，河北唐山人，硕士研究生，主要从事采矿技术及安全方面的研究。E-mail:2453117287@qq.com

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张冰洁（1998—），女，河北唐山人，硕士研究生，主要从事采矿技术及安全方面的研究。E-mail:2453117287@qq.com

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