Article(id=1314908110326686123, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1314908074188562588, articleNumber=null, orderNo=null, doi=10.3969/j.issn.0253-6099.2026.04.003, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1778601600000, receivedDateStr=2026-05-13, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1791428123313, onlineDateStr=2026-10-08, pubDate=null, pubDateStr=null, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1791428123313, onlineIssueDateStr=2026-10-08, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1791428123313, creator=13701087609, updateTime=1791428123313, updator=13701087609, issue=Issue{id=1314908074188562588, tenantId=1146029695717560320, journalId=1235980550691926019, year='2026', volume='46', issue='4', pageStart='1', pageEnd='266', issueExtLink='null', onlineDate='null', pubDate='1785513600000', pubDateStr='2026-08-01', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1791428114697, creator='13701087609', updateTime=1791430419337, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1314917740654191268, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1314908074188562588, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1314917740654191269, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1314908074188562588, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=16, endPage=26, ext={EN=ArticleExt(id=1314908110616093100, articleId=1314908110326686123, tenantId=1146029695717560320, journalId=1235980550691926019, language=EN, title=Particle Flow Simulation of Splitting Mechanical Properties of Rock with Cross-Cracks at Different Angles, columnId=1236276106018484431, journalTitle=Mining and Metallurgical Engineering, columnName=MINING, runingTitle=null, highlight=null, articleAbstract=

To understand the splitting-tensile behavior of internal cross-cracks in rock, discrete element splitting simulation tests were carried out by using a particle flow code (PFC^2D) based on the physical and mechanical parameters of rock obtained from laboratory tests. The results show that the tensile strength of specimens with pre-fabricated cracks is lower than that of intact specimens. When the angle between the main crack and the loading direction ranges from 0° to 60°, the peak strength of specimens decreases with the increase of the secondary crack angle; when the angle ranges from 60° to 90°, the peak strength increases with the increase of the secondary crack angle. In general, the tensile strength of specimens follows the rule that the larger the angle difference between the main and secondary cracks, the smaller the tensile strength. Under splitting loading, pre-fabricated cracks do not change the loading mode of specimens but only reduce their bearing strength. Micro-cracks in cross-crack specimens are dominated by tensile micro-cracks, which initiate near the tips of pre-fabricated cracks, propagate toward the loading ends and coalesce with increasing load, resulting in specimen failure. Irreversible transformation of internal energy occurs during rock failure. When the loading reaches the storage limit of elastic strain energy, the elastic strain energy is rapidly converted into dissipated energy for micro-crack initiation and propagation as well as particle movement. A large number of acoustic emission events occur simultaneously, and the number of micro-crack increases exponentially.

, authors=Changyao HE¹, Junzhi CHEN², Chunfang REN², authorsList=Changyao HE, Junzhi CHEN, Chunfang REN, authorCompany=null, correspAuthors=Junzhi CHEN, 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=1314908111081660846, articleId=1314908110326686123, tenantId=1146029695717560320, journalId=1235980550691926019, language=CN, title=不同角度交叉裂纹岩石劈裂力学性能的颗粒流模拟, columnId=1236276106219811026, journalTitle=矿冶工程杂志, columnName=采矿, runingTitle=null, highlight=null, articleAbstract=

为理解岩石内部交叉裂纹的劈裂拉伸行为，基于室内试验获取的岩石物理力学参数，开展二维颗粒流（PFC^2D）离散元劈裂模拟试验。结果表明：预制裂纹试样抗拉强度低于完整试样，主裂纹与受力方向夹角为0°~60°时，试样峰值强度随次裂纹角度增大而减小，60°~90°时，试样峰值强度随次裂纹角度增大而增大，总体上试样抗拉强度遵循“主次裂纹角度差值越大，抗拉强度越小”的规律；劈裂作用下，预制裂纹不改变试样的受力类型，仅降低其受力强度；交叉裂纹试样的微裂纹以拉伸微裂纹为主，微裂纹萌生于预制裂纹尖端附近，随荷载施加向加载端扩展、贯穿，导致试样失效；岩石破坏时内部能量发生不可逆转化，当加载至弹性应变能储存极限时，其迅速转化为耗散能，用于微裂纹发育扩展、颗粒移动等，此时伴随大量声发射事件，微裂纹数量呈指数增加。

, authors=何昌耀¹, 陈俊智², 任春芳², authorsList=何昌耀, 陈俊智, 任春芳, authorCompany=null, correspAuthors=陈俊智, authorNote=, correspAuthorsNote=, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=PLnFznuIY7F9vcM2mR5Upw==, magXml=JByrT9xTJt/kR4Bn+wt6gQ==, pdfUrl=null, pdf=UZ5ItZDD20mAx2QVMMFBPw==, pdfFileSize=4210057, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=VkdKy9KLTdzA/7q+BT3MRA==, mapNumber=null, fund=null)}, authors=[Author(id=1314908111526257078, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1314908110326686123, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=Cyhe858808@163.com, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1314908111626920376, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1314908110326686123, authorId=1314908111526257078, language=EN, stringName=Changyao HE, firstName=Changyao, middleName=null, lastName=HE, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=¹, address=^1.Faculty of Public Safety and Emergency Management, Kunming University of Science and Technology, Kunming 650093, Yunnan, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1314908111698223545, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1314908110326686123, authorId=1314908111526257078, language=CN, stringName=何昌耀, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=¹, address=^1．昆明理工大学 公共安全与应急管理学院，云南 昆明 650093, bio={"content":"

何昌耀（2000—），男，贵州水城人，硕士研究生，从事岩石力学方面的研究工作。E-mail: Cyhe858808@163.com

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何昌耀（2000—），男，贵州水城人，硕士研究生，从事岩石力学方面的研究工作。E-mail: Cyhe858808@163.com

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