Article(id=1321866354274189395, tenantId=1146029695717560320, journalId=1225396423026438145, issueId=1321866297609146910, 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=1748361600000, receivedDateStr=2025-05-28, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1793087097948, onlineDateStr=2026-10-27, pubDate=1779638400000, pubDateStr=2026-05-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793087097948, onlineIssueDateStr=2026-10-27, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793087097948, creator=13701087609, updateTime=1793087097948, updator=13701087609, issue=Issue{id=1321866297609146910, tenantId=1146029695717560320, journalId=1225396423026438145, year='2026', volume='46', issue='5', pageStart='1', pageEnd='312', issueExtLink='null', onlineDate='null', pubDate='1779638400000', pubDateStr='2026-05-25', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793087084438, creator='13701087609', updateTime=1793094562481, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1321897662853533805, tenantId=1146029695717560320, journalId=1225396423026438145, issueId=1321866297609146910, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1321897662853533806, tenantId=1146029695717560320, journalId=1225396423026438145, issueId=1321866297609146910, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=185, endPage=191, ext={EN=ArticleExt(id=1321866354446155860, articleId=1321866354274189395, tenantId=1146029695717560320, journalId=1225396423026438145, language=EN, title=Stage Mechanical Response During Splitting Process of Dry and Water-Saturated Siltstone, columnId=null, journalTitle=Mining Research and Development, columnName=null, runingTitle=null, highlight=null, articleAbstract=

In order to study the stage mechanical response characteristics of dry and water-saturated siltstone during splitting process, Brazilian splitting test was carried out, and the stage division method of full stress-strain curve of rock splitting process based on splitting modulus was established. The response law and mechanical mechanism of stress characteristic value and strain characteristic value in each stage were systematically analyzed. The results show that water significantly affects the stress evolution path and strain development path of Brazilian splitting process in siltstone. The average values of compaction stress, yield stress, peak stress and unloading stress of water-saturated samples decrease to 62.65%, 50.21%, 48.93% and 68.11% of dry samples, respectively. The average value of stress ratio in compaction stage increases by 28.50%, and the average values of stress ratio in elastic stage, yield stage and failure stage decrease by 19.60%, 41.35% and 11.99%, respectively. The average values of compaction strain, yield strain, peak strain and unloading strain of water-saturated samples are 4.12%, 19.26%, 20.70% and 17.92% lower than those of dry samples, respectively. The average value of strain ratio in compaction stage increases by 20.38%. The average values of strain ratio in elastic stage and yield stage decrease by 29.64% and 36.93%, respectively, and the average value of strain ratio in failure stage increases by 347.73%. Saturated treatment enhances the plastic characteristics of splitting process. After saturated treatment, the bending energy index of siltstone decrease by 73.77%, and the impact tendency decrease from class Ⅲ to class Ⅱ. The research results can provide theoretical basis for water injection softening and anti-impact technology of deep mine roof.

, authors=Hanqiao Zhang¹, Zunguo Zhang², Guoqing Han¹, Yi Chen^{2, 3}, Guoxing Nian¹, Xinli Yuan², authorsList=Hanqiao Zhang, Zunguo Zhang, Guoqing Han, Yi Chen, Guoxing Nian, Xinli Yuan, authorCompany=null, correspAuthors=Zunguo Zhang, 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=1321866354664259669, articleId=1321866354274189395, tenantId=1146029695717560320, journalId=1225396423026438145, language=CN, title=干燥及饱水粉砂岩劈裂过程阶段性力学响应, columnId=1226462295417598973, journalTitle=矿业研究与开发, columnName=矿山安全与环保, runingTitle=null, highlight=null, articleAbstract=

为研究干燥及饱水粉砂岩劈裂过程阶段性力学响应特征，开展了巴西劈裂试验，建立了基于劈裂模量的岩石劈裂过程全应力-应变曲线阶段性划分方法，系统分析了各阶段应力特征值、应变特征值的响应规律及其力学机制。结果表明，水分显著影响了粉砂岩巴西劈裂过程的应力演化路径和应变发展路径；饱水试样压密应力、屈服应力、峰值应力和卸荷应力平均值分别降至干燥试样的62.65%、50.21%、48.93%和68.11%，压密阶段应力占比平均值增大28.50%，弹性阶段、屈服阶段和破坏阶段应力占比平均值分别减小19.60%、41.35%和11.99%；饱水试样压密应变、屈服应变、峰值应变和卸荷应变平均值较干燥试样分别减小4.12%、19.26%、20.70%和17.92%，压密阶段应变占比平均值增大20.38%，弹性阶段和屈服阶段应变占比平均值分别减小29.64%和36.93%，破坏阶段应变占比平均值增大347.73%，饱水处理增强了试样劈裂过程的塑性特征；饱水处理后粉砂岩弯曲能量指数减小73.77%，冲击倾向性由Ⅲ类降为Ⅱ类。研究结果可为深部矿井顶板注水软化防冲技术提供理论依据。

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张汉桥（1969—），男，黑龙江鹤岗人，高级工程师，主要从事煤矿开采与安全技术方面的研究。E-mail: 791080964@qq.com

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张汉桥（1969—），男，黑龙江鹤岗人，高级工程师，主要从事煤矿开采与安全技术方面的研究。E-mail: 791080964@qq.com

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