Article(id=1322164743255737226, tenantId=1146029695717560320, journalId=1225396423026438145, issueId=1322164546295410919, 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=1735574400000, receivedDateStr=2024-12-31, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1793158239424, onlineDateStr=2026-10-28, pubDate=1764000000000, pubDateStr=2025-11-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793158239424, onlineIssueDateStr=2026-10-28, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793158239424, creator=13701087609, updateTime=1793158239424, updator=13701087609, issue=Issue{id=1322164546295410919, tenantId=1146029695717560320, journalId=1225396423026438145, year='2025', volume='45', issue='11', pageStart='1', pageEnd='284', issueExtLink='null', onlineDate='null', pubDate='1764000000000', pubDateStr='2025-11-25', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793158192465, creator='13701087609', updateTime=1793158905697, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1322167537857573862, tenantId=1146029695717560320, journalId=1225396423026438145, issueId=1322164546295410919, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1322167537861768167, tenantId=1146029695717560320, journalId=1225396423026438145, issueId=1322164546295410919, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=133, endPage=140, ext={EN=ArticleExt(id=1322164743415120779, articleId=1322164743255737226, tenantId=1146029695717560320, journalId=1225396423026438145, language=EN, title=Study on Bearing Capacity Effect of Variable Cross-Section Pillar in Goaf, columnId=null, journalTitle=Mining Research and Development, columnName=null, runingTitle=null, highlight=null, articleAbstract=

Due to the influence of ore-rock endowment and blasting construction quality, variable cross-section pillars are commonly present in room-and-pillar underground mining mines. To study the bearing capacity effect of variable cross-section pillars, taking the variable cross-section pillar of a limestone mine as the research object, a mechanical model of the variable cross-section pillar was established, the expressions for its stress and safety factor were derived, the relationships between stress, safety factor and factors such as the diameter d of the variable cross-section pillar and the radius R of the variable cross-section area were studied respectively, and the stress distribution characteristic was analyzed. The results show that the stress of variable cross-section pillars changes gradually in the variable cross-section area, and the stress amplitude decreases with the increase of R or d. The safety factor increases with the increase of R, and the rate of change increases gradually. It also increases synchronously with the increase of d. Compared with constant cross-section pillars, variable cross-section pillars have a more uniform stress distribution, a better stress transfer effect at the junction with the roof, a higher safety factor, and better stability. Numerical simulation and engineering examples have verified the reliability of the theoretical calculation results.

, authors=Lichun JIANG, Liuting WEI, Junhao CHEN, authorsList=Lichun JIANG, Liuting WEI, Junhao CHEN, authorCompany=null, correspAuthors=Liuting WEI, 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=1322164748653806514, articleId=1322164743255737226, tenantId=1146029695717560320, journalId=1225396423026438145, language=CN, title=采空区变截面矿柱承载力学效应研究, columnId=1226462295417598973, journalTitle=矿业研究与开发, columnName=矿山安全与环保, runingTitle=null, highlight=null, articleAbstract=

受矿岩禀赋和爆破施工质量的影响，变截面矿柱普遍存在于房柱法地下开采矿山中。为研究变截面矿柱承载力学效应，以某石灰岩矿变截面矿柱为研究对象，构建变截面矿柱力学模型，推导其应力和安全系数表达式，分别研究应力及安全系数与变截面矿柱直径d、变截面区半径R等因素之间的关系，并分析应力分布特征。结果表明：变截面矿柱应力在变截面区域是逐渐变化的，应力幅值随着R或d的增大而减小；安全系数随着R的增大而增大，且变化速率逐渐增大，随着d的增大同步增大；与等截面矿柱相比，变截面矿柱应力分布更均匀，与顶板相接处应力传递效果更好，安全系数更高，稳定性更好。数值模拟和工程实例验证了理论计算结果的可靠性。

, authors=姜立春, 韦柳婷, 陈俊豪, authorsList=姜立春, 韦柳婷, 陈俊豪, authorCompany=null, correspAuthors=韦柳婷, authorNote=, correspAuthorsNote=, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=uYmjBst/2WJsL9en/y7hog==, magXml=oTRVNKaqVp3BCEa+TM8EEA==, pdfUrl=null, pdf=46ADdNE01jRHHlGjiHpuZw==, pdfFileSize=3632983, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=yV/SVwWI/p6Z7qhrwJ9brQ==, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=sgWRWMmeugAEJEdTwmovGg==, mapNumber=null, fund=null)}, authors=[Author(id=1322164750604157879, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164743255737226, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=ginger@scut.edu.cn, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1322164750725792697, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164743255737226, authorId=1322164750604157879, language=EN, stringName=Lichun JIANG, firstName=Lichun, middleName=null, lastName=JIANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=null, address=School of Civil Engineering & Transportation, South China University of Technology, Guangzhou, Guangdong 510640, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1322164750822261690, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164743255737226, authorId=1322164750604157879, language=CN, stringName=姜立春, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=null, address=华南理工大学 土木与交通学院，广东 广州　510640, bio={"content":"

姜立春（1968—），男，安徽滁州人，博士，教授，主要从事矿山岩土安全方面的研究。E-mail：ginger@scut.edu.cn

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姜立春（1968—），男，安徽滁州人，博士，教授，主要从事矿山岩土安全方面的研究。E-mail：ginger@scut.edu.cn

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tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164743255737226, companyId=1322164750490911667, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=华南理工大学 土木与交通学院，广东 广州　510640)])], figs=[ArticleFig(id=1322164752747447247, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164743255737226, language=EN, label=Fig.1, caption=Real scene diagram and mechanical model of variable cross-section pillar, figureFileSmall=nCl5qYQ6A01nbK/fyNkmPw==, figureFileBig=yV/SVwWI/p6Z7qhrwJ9brQ==, tableContent=null), ArticleFig(id=1322164752852304848, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164743255737226, language=CN, label=图1, caption=变截面矿柱实景图及力学模型, figureFileSmall=nCl5qYQ6A01nbK/fyNkmPw==, figureFileBig=yV/SVwWI/p6Z7qhrwJ9brQ==, tableContent=null), ArticleFig(id=1322164753091380177, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164743255737226, language=EN, label=Fig.2, caption=Calculation model of pillar bearing capacity, figureFileSmall=gLcGe0yI5XI1+aLi+jOCgg==, figureFileBig=yGHlNA2bvqrgWluYnO19bw==, tableContent=null), ArticleFig(id=1322164754832016338, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164743255737226, language=CN, label=图2, caption=矿柱承载力计算模型, figureFileSmall=gLcGe0yI5XI1+aLi+jOCgg==, figureFileBig=yGHlNA2bvqrgWluYnO19bw==, tableContent=null), ArticleFig(id=1322164754932679635, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164743255737226, language=EN, label=Fig.3, caption=Stress curves of variable cross-section pillars under different radiuses of variable cross-section area, figureFileSmall=aXFkrukYM2nDQahSd0P3Gw==, figureFileBig=7tPWTsbdXgbZvJHo3WX5WQ==, tableContent=null), ArticleFig(id=1322164755058508756, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164743255737226, language=CN, label=图3, caption=不同变截面区半径下的变截面矿柱应力曲线, figureFileSmall=aXFkrukYM2nDQahSd0P3Gw==, figureFileBig=7tPWTsbdXgbZvJHo3WX5WQ==, tableContent=null), ArticleFig(id=1322164755138200533, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164743255737226, language=EN, label=Fig.4, caption=Stress curves of variable cross-section pillars under different diameters of variable cross-section pillars, figureFileSmall=Kc8Ck85Yv3HEEMNMSA0zBA==, figureFileBig=DfE94/ucwZDxhTRKDOtH/A==, tableContent=null), ArticleFig(id=1322164755226280918, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164743255737226, language=CN, label=图4, caption=不同变截面矿柱直径下的变截面矿柱应力曲线, figureFileSmall=Kc8Ck85Yv3HEEMNMSA0zBA==, figureFileBig=DfE94/ucwZDxhTRKDOtH/A==, tableContent=null), ArticleFig(id=1322164755293389783, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164743255737226, language=EN, label=Fig.5, caption=Numerical model of variable cross-section 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tableContent=null), ArticleFig(id=1322164755603768283, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164743255737226, language=EN, label=Fig.7, caption=Comparison of theoretical calculation results and numerical simulation results, figureFileSmall=ZpkeMpIkuybFa+7yt1pP6g==, figureFileBig=z2dYLa9pbSNdu8r2VtSsqA==, tableContent=null), ArticleFig(id=1322164755666682844, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164743255737226, language=CN, label=图7, caption=理论计算结果与数值模拟结果对比, figureFileSmall=ZpkeMpIkuybFa+7yt1pP6g==, figureFileBig=z2dYLa9pbSNdu8r2VtSsqA==, tableContent=null), ArticleFig(id=1322164755733791709, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164743255737226, language=EN, label=Fig.8, caption=Safety factor variation curves of variable cross-section pillars under different radiuses of variable cross-section area, figureFileSmall=wicVlrt9DaJkFxb1vkzZmQ==, 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Physical and mechanical parameters of rock

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类型	容重/（kN/m3）	抗压强度/MPa	弹性模量/GPa	泊松比	黏聚力/MPa	内摩擦角/（°）	剪切模量/GPa
矿体	26.3	44.26	8.20	0.27	13.64	39.21	3.23
围岩	25.2	40.83	5.12	0.29	10.45	24.75	1.98

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岩石物理力学参数

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类型	容重/（kN/m3）	抗压强度/MPa	弹性模量/GPa	泊松比	黏聚力/MPa	内摩擦角/（°）	剪切模量/GPa
矿体	26.3	44.26	8.20	0.27	13.64	39.21	3.23
围岩	25.2	40.83	5.12	0.29	10.45	24.75	1.98

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