Article(id=1321897315200258461, tenantId=1146029695717560320, journalId=1225396423026438145, issueId=1321897310649434924, 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=1779292800000, receivedDateStr=2026-05-21, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1793094479607, onlineDateStr=2026-10-27, pubDate=1790265600000, pubDateStr=2026-09-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793094479607, onlineIssueDateStr=2026-10-27, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793094479607, creator=13701087609, updateTime=1793094479607, updator=13701087609, issue=Issue{id=1321897310649434924, tenantId=1146029695717560320, journalId=1225396423026438145, year='2026', volume='46', issue='9', pageStart='1', pageEnd='346', issueExtLink='null', onlineDate='null', pubDate='1790265600000', pubDateStr='2026-09-25', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1793094478523, creator='13701087609', updateTime=1793094618231, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1321897896698561428, tenantId=1146029695717560320, journalId=1225396423026438145, issueId=1321897310649434924, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1321897896698561429, tenantId=1146029695717560320, journalId=1225396423026438145, issueId=1321897310649434924, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=107, endPage=116, ext={EN=ArticleExt(id=1321897315422556574, articleId=1321897315200258461, tenantId=1146029695717560320, journalId=1225396423026438145, language=EN, title=Study on Rock Fragmentation Characteristics of Bench Blasting of Frozen Rock Mass in Cold Regions, columnId=null, journalTitle=Mining Research and Development, columnName=null, runingTitle=null, highlight=null, articleAbstract=

Due to changes in physical and mechanical properties, the frozen rock mass in cold regions has a significant impact on rock fragmentation by blasting. To investigate the influence law of rock freezing temperature on the fragmentation characteristics of bench blasting, taking an open-pit mine in a cold region as the engineering background, a numerical simulation study on blasting was conducted using ANSYS/LS-DYNA software. Taking the normal temperature rock mass condition as a comparison, the influences of different freezing temperatures on blasting stress wave propagation, blasting crack distribution range, and rock mass damage and failure were mainly analyzed. The research results show that in terms of stress wave propagation, freezing temperature has a significant impact on the dynamic response of rock. As the rock freezing temperature decreases from 20℃ (normal temperature) to -30 ℃, the elastic modulus of the rock mass increases, and the stress wave velocity and stress amplitude increase by 27% and 20%, respectively, while the attenuation coefficient shows no significant change. In terms of blasting crack distribution range and rock mass damage and failure, the mechanical parameters of bench frozen rock mass in cold regions, such as compressive strength and elastic modulus, are higher, which has an adverse effect on rock fragmentation by blasting. In particular, for the frozen rock mass at -30 ℃ in the upper part of the bench, compared with the normal-temperature rock mass, its fracture zone range decreases by about 29%, and the reduction in damage and failure volume reaches 22%. The research results can provide a theoretical basis for the optimization of bench blasting parameters of frozen rock mass in cold region open-pit mines.

, authors=Bo Liu^{1, 2, 3}, Yuxing Yu⁴, Wei Xiong⁴, Yu Tang⁴, Wenbo Shen³, Jiangshan Cao³, Xianyang Qiu³, authorsList=Bo Liu, Yuxing Yu, Wei Xiong, Yu Tang, Wenbo Shen, Jiangshan Cao, Xianyang Qiu, 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=1321897315707769247, articleId=1321897315200258461, tenantId=1146029695717560320, journalId=1225396423026438145, language=CN, title=寒区冻结岩体台阶爆破破岩特性研究, columnId=1226462294490657775, journalTitle=矿业研究与开发, columnName=采矿与矿山充填, runingTitle=null, highlight=null, articleAbstract=

寒区冻结岩体由于物理力学性质发生变化，对爆破破岩会产生重要影响。为探究岩石冻结温度对台阶爆破破碎特性的影响规律，以某寒区露天矿山为工程背景，采用ANSYS/LS-DYNA软件开展爆破数值模拟研究。以常温岩体工况为对比，重点分析了不同冻结温度对爆破应力波传播、爆破裂纹分布范围及岩体损伤破坏的影响。研究结果表明：在应力波传播方面，冻结温度对岩石动力响应具有显著影响，随着岩石冻结温度由20 ℃（常温）降低至-30 ℃，岩体弹性模量增大，应力波波速和应力幅值分别提高27%、20%，而衰减系数无显著变化。在爆破裂纹分布范围及岩体损伤破坏方面，寒区台阶冻结岩体的抗压强度、弹性模量等力学参数更高，会对爆破破岩产生不利影响，特别是台阶上部-30 ℃冻结岩体，相较于常温岩体，其裂隙区范围降低约29%，损伤破坏体积降幅达22%。研究结果可为寒区露天矿冻结岩体台阶爆破参数优化提供理论依据。

, authors=刘博^{1, 2, 3}, 余宇星⁴, 熊伟⁴, 唐宇⁴, 沈文博³, 曹江山³, 邱贤阳³, authorsList=刘博, 余宇星, 熊伟, 唐宇, 沈文博, 曹江山, 邱贤阳, authorCompany=null, correspAuthors=null, authorNote=, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=b1P86WdmQ3ZeeGIK3pJLHA==, magXml=vE5ehvHJb9JYB/vf5ARnFg==, pdfUrl=null, pdf=gyJUYEpvqSWdb553voub3Q==, pdfFileSize=2993745, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=TyxKh8m0Udh/t6iTHum/tA==, mapNumber=null, fund=null)}, authors=[Author(id=1321897316307554733, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1321897315200258461, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=csu_dliubo@163.com, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1321897316408218033, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1321897315200258461, authorId=1321897316307554733, language=EN, stringName=Bo Liu, firstName=Bo, middleName=null, lastName=Liu, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=^{1, 2, 3}, address=^1.Changsha Institute of Mining Research Co., Ltd., Changsha, Hunan 410012, China
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^3.Central South University, Changsha, Hunan 410083, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1321897316483715506, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1321897315200258461, authorId=1321897316307554733, language=CN, stringName=刘博, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=^{1, 2, 3}, address=^1．长沙矿山研究院有限责任公司，湖南 长沙　410012
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刘博（1989—）男，河南泌阳人，博士，高级工程师，主要从事采矿技术与安全管理方面的研究。E-mail:csu_dliubo@163.com

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刘博（1989—）男，河南泌阳人，博士，高级工程师，主要从事采矿技术与安全管理方面的研究。E-mail:csu_dliubo@163.com

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