Article(id=1321893379508645968, tenantId=1146029695717560320, journalId=1225396423026438145, issueId=1321893331622286028, 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=1754236800000, receivedDateStr=2025-08-04, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1793093541265, onlineDateStr=2026-10-27, pubDate=1784908800000, pubDateStr=2026-07-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793093541265, onlineIssueDateStr=2026-10-27, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793093541265, creator=13701087609, updateTime=1793093541265, updator=13701087609, issue=Issue{id=1321893331622286028, tenantId=1146029695717560320, journalId=1225396423026438145, year='2026', volume='46', issue='7', pageStart='1', pageEnd='320', issueExtLink='null', onlineDate='null', pubDate='1784908800000', pubDateStr='2026-07-25', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793093529849, creator='13701087609', updateTime=1793094587578, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1321897768357048353, tenantId=1146029695717560320, journalId=1225396423026438145, issueId=1321893331622286028, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1321897768357048354, tenantId=1146029695717560320, journalId=1225396423026438145, issueId=1321893331622286028, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=150, endPage=163, ext={EN=ArticleExt(id=1321893380808880209, articleId=1321893379508645968, tenantId=1146029695717560320, journalId=1225396423026438145, language=EN, title=Macroscopic, Mesoscopic and Microscopic Failure Patterns of Sandstone Subjected to High-Temperature Cooling Treatment, columnId=null, journalTitle=Mining Research and Development, columnName=null, runingTitle=null, highlight=null, articleAbstract=

To systematically reveal the multi-scale response mechanism of surrounding rock structures under cyclic thermal disturbance, a comprehensive research system encompassing macroscopic physical property evolution, mechanical properties, microstructural damage, and mesoscopic crack simulation was established, taking dense sandstone from a mining area in Shanxi as the research object. The experimental results show that the peak strength of sandstone in its natural state is 85.00 MPa, which decreases to 40.50 MPa after eight 0 ℃ cooling cycles, representing a reduction of 52.53%. The strength of sandstone exhibits a negative exponential decay pattern with increasing number of cycles at different temperatures. The elastic modulus undergoes significant degradation during the first cycle, with a reduction reaching 38.8% under the 0 ℃ condition. After eight cycles, the overall reduction in elastic modulus ranges from 39.3% to 61.1% at different temperatures. The failure mode manifests as a composite characteristic of "crack convergence-local slippage-structural loosening." Scanning electron microscopy results reveal the evolution process of "intergranular bond breakage-microcrack propagation-skeleton disintegration" induced by thermal cycling. Mesoscopic simulation based on the discrete element method further captures the crack initiation sequence and tension-shear differentiation characteristics, quantitatively demonstrating the evolutionary path of structural damage progressing from the boundary to the core. The research findings elucidate the multi-scale rock failure process induced by thermal cycling from macroscopic to mesoscopic levels, providing a theoretical basis for predicting rock mass stability and conducting multi-field coupling simulations under mine geothermal development conditions.

, authors=Changbin Wang^{1, 2, 3}, Jinjun Jiang^{1, 2, 3}, Huihui Kong⁴, authorsList=Changbin Wang, Jinjun Jiang, Huihui Kong, authorCompany=null, correspAuthors=null, 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=1321893381060538450, articleId=1321893379508645968, tenantId=1146029695717560320, journalId=1225396423026438145, language=CN, title=高温-冷却处理作用下砂岩宏细微观破坏规律, columnId=1226462295417598973, journalTitle=矿业研究与开发, columnName=矿山安全与环保, runingTitle=null, highlight=null, articleAbstract=

为系统揭示循环热扰动下围岩结构的多尺度响应机制，以山西某矿区致密砂岩为研究对象，构建了涵盖宏观物性演化、力学特性、微结构损伤与细观裂纹模拟的综合研究体系。试验结果表明，自然状态下砂岩的峰值强度为85.00 MPa，经8次0 ℃冷却循环后降至40.50 MPa，降幅达52.35%；不同温度下，砂岩强度随循环次数均呈负指数型衰减规律。弹性模量在首次循环时即发生显著劣化，0 ℃条件下弹性模量降幅高达38.8%；经8次循环后，不同温度下弹性模量的整体降幅为39.3%~61.1%，破坏模式表现为“裂纹汇聚-局部滑移-结构松脱”的复合特征。扫描电镜结果揭示了热循环诱导的“粒间键断-微裂扩展-骨架解体”演化过程，基于离散元的细观模拟进一步捕捉了裂纹的起裂时序与拉剪分型特征，量化展现了结构损伤从边界向核心发展的演化路径。研究结果阐明了宏细观多尺度下温度循环诱发的岩石破坏过程，为矿井地热开发条件下的岩体稳定性预测与多场耦合模拟提供了理论依据。

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王长彬（1982—），男，河南商丘人，硕士，副研究员，主要从事矿井通风、防灭火防尘等方面的工作。E-mail:249484687@qq.com

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王长彬（1982—），男，河南商丘人，硕士，副研究员，主要从事矿井通风、防灭火防尘等方面的工作。E-mail:249484687@qq.com

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