Article(id=1314908018144280919, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1314907832038810534, articleNumber=null, orderNo=null, doi=10.3969/j.issn.0253-6099.2026.02.002, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1762963200000, receivedDateStr=2025-11-13, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1791428101334, onlineDateStr=2026-10-08, pubDate=null, pubDateStr=null, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1791428101334, onlineIssueDateStr=2026-10-08, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1791428101334, creator=13701087609, updateTime=1791428101334, updator=13701087609, issue=Issue{id=1314907832038810534, tenantId=1146029695717560320, journalId=1235980550691926019, year='2026', volume='46', issue='2', pageStart='1', pageEnd='214', issueExtLink='null', onlineDate='null', pubDate='1774972800000', pubDateStr='2026-04-01', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1791428056964, creator='13701087609', updateTime=1791430468655, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1314917947500486818, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1314907832038810534, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1314917947500486819, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1314907832038810534, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=8, endPage=14, ext={EN=ArticleExt(id=1314908019889111384, articleId=1314908018144280919, tenantId=1146029695717560320, journalId=1235980550691926019, language=EN, title=Stability Analysis and Width Optimization of Pillars in Stoping of Steeply Inclined Thick and Large Ore Bodies Based on Cusp Catastrophe Theory, columnId=1236276106018484431, journalTitle=Mining and Metallurgical Engineering, columnName=MINING, runingTitle=null, highlight=null, articleAbstract=

Aiming at the reasonable safe width of pillars in cut-and-fill stoping of steeply inclined thick and large phosphorite ore bodies, a mechanical analysis model of stope pillars was established based on elastic mechanics theory. The average bearing load of pillars due to the backfill was calculated, and a stope structural layout consisting of roof pillars and stope pillars was adopted. Cusp catastrophe theory was used to analyze the critical instability conditions of pillars, and the formula for critical failure width of pillars was then deduced, with which the critical pillar width is calculated to be 3.591 m. On this basis, numerical simulation was carried out to investigate the deformation and failure characteristics of surrounding rock in a stope with width of 10 m and pillar widths of 2 m, 3 m, 4 m and 5 m respectively. The comparison results of displacement and plastic zone indicate that roof subsidence gradually decreases with the increase of pillar width. When the pillar width is 5 m, the maximum roof subsidence is 30.95 mm and the plastic zone is only distributed in local roof areas. Engineering practice has verified that with pillars 5 m in width, the maximum displacement and maximum stress of the pillars are 18.47 mm and 4.32 MPa respectively, and both the stope and backfill remain in a stable state, which meets the requirements of engineering safety and economic efficiency.

, authors=Xiufu YANG¹, Chen WANG², Haocheng LU¹, Yi LUO², Cheng LI², Wei WANG², authorsList=Xiufu YANG, Chen WANG, Haocheng LU, Yi LUO, Cheng LI, Wei WANG, authorCompany=null, correspAuthors=Chen WANG, 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=1314908021558444378, articleId=1314908018144280919, tenantId=1146029695717560320, journalId=1235980550691926019, language=CN, title=基于尖点突变理论的急倾斜厚大矿体回采矿柱稳定性分析及宽度优化, columnId=1236276106219811026, journalTitle=矿冶工程杂志, columnName=采矿, runingTitle=null, highlight=null, articleAbstract=

针对尾砂充填体下急倾斜厚大磷矿体回采采场矿柱安全宽度留设问题，采用弹性力学理论构建了充填体下采场矿柱力学分析模型，计算得到充填体下矿柱承载的平均载荷，并采用顶板矿柱+采场矿柱的采场结构布置方案。利用尖点突变理论分析矿柱失稳的临界条件，推导矿柱失稳的临界宽度表达式，计算得到矿柱宽度大于3.591 m。基于理论计算，选择矿柱宽度2、3、4、5 m，矿房宽度10 m进行采场围岩变形破坏特征模拟。对比位移和塑性区发现，随着矿柱宽度增大，采场顶板下沉量逐渐减小；矿柱宽度为5 m时，采场顶板最大下沉量为30.95 mm，塑性区仅波及顶板局部区域。工程实践表明：矿柱宽度为5 m时，矿柱最大位移为18.47 mm，最大应力为4.32 MPa，采场、充填体均处于稳定状态，符合工程安全性和经济性要求。

, authors=杨秀福¹, 王沉², 陆浩成¹, 罗义², 李程², 王威², authorsList=杨秀福, 王沉, 陆浩成, 罗义, 李程, 王威, authorCompany=null, correspAuthors=王沉, authorNote=, correspAuthorsNote=, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=4alOl39EAo+b9oeZJwz+WQ==, magXml=naTL2YUEm0BjS7U37vFMug==, pdfUrl=null, pdf=eTD+wxkQksor5U/IKmwLWA==, pdfFileSize=4570664, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=IpYAzr7KMkrfaEm3KNdReQ==, mapNumber=null, fund=null)}, authors=[Author(id=1314908023680762210, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1314908018144280919, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=2741452779@qq.com, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1314908023764648292, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1314908018144280919, authorId=1314908023680762210, language=EN, stringName=Xiufu YANG, firstName=Xiufu, middleName=null, lastName=YANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=¹, address=^1.Wengfu (Group) Co., Ltd., Guiyang 550002, Guizhou, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1314908023940809061, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1314908018144280919, authorId=1314908023680762210, language=CN, stringName=杨秀福, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=¹, address=^1．瓮福（集团）有限责任公司，贵州 贵阳 550002, bio={"content":"

杨秀福（1998-），男（侗族），贵州毕节人，助理工程师，主要从事充填工艺方面的研究。E-mail: 2741452779@qq.com

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杨秀福（1998-），男（侗族），贵州毕节人，助理工程师，主要从事充填工艺方面的研究。E-mail: 2741452779@qq.com

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