Article(id=1314907659627749654, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1314907656704324517, articleNumber=null, orderNo=null, doi=10.3969/j.issn.0253-6099.2026.01.005, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1753632000000, receivedDateStr=2025-07-28, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1791428015857, onlineDateStr=2026-10-08, pubDate=null, pubDateStr=null, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1791428015857, onlineIssueDateStr=2026-10-08, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1791428015857, creator=13701087609, updateTime=1791428015857, updator=13701087609, issue=Issue{id=1314907656704324517, tenantId=1146029695717560320, journalId=1235980550691926019, year='2026', volume='46', issue='1', pageStart='1', pageEnd='206', issueExtLink='null', onlineDate='null', pubDate='1769875200000', pubDateStr='2026-02-01', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1791428015160, creator='13701087609', updateTime=1791430491940, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1314918045139690301, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1314907656704324517, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1314918045139690302, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1314907656704324517, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=30, endPage=36, ext={EN=ArticleExt(id=1314907661351608600, articleId=1314907659627749654, tenantId=1146029695717560320, journalId=1235980550691926019, language=EN, title=Reasonable Air Column Length of Axial Decoupling Charge in Presplit Blasting, columnId=1236276106018484431, journalTitle=Mining and Metallurgical Engineering, columnName=MINING, runingTitle=null, highlight=null, articleAbstract=

Reasonable axial length of an air column can lead to crack penetration between adjacent blast holes without generating crushed zone on hole wall, which plays an important role in presplit blasting. The variation characteristics of initial impact pressure on the hole wall along the axial direction of blast hole were analyzed by theoretical calculation. For the blasting engineering of Barun Open-pit Mine, a reasonable axial length of air column for presplit blasting was preliminarily estimated to be about 1.5 m, and then the variation of stress after blasting with different axial lengths of air column was analyzed by numerical simulation. The results show that the initial pressure on the hole wall in the air column section presents a "U-shaped" distribution along the axis of blast holes, and the minimum pressure exists at the middle of the air column. When the axial length of an air column is 1.5-2.0 m, the numerical simulated stress oscillates when it drops to about 10 MPa, which can meet the requirements of crack initiation and propagation between rock holes. The engineering practice in the stope of Barun mine shows that when the air column length is 1.5 m, the slope roughness after presplit blasting is less than 10 cm, the half-hole mark rate greater than 85% and the resultant velocity of blasting vibration is 5.782 cm/s, presenting excellent indicators.

, authors=Qiangqiang SHI^{1, 2}, Xingxing ZHU^{1, 2}, authorsList=Qiangqiang SHI, Xingxing ZHU, 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=1314907661859119386, articleId=1314907659627749654, tenantId=1146029695717560320, journalId=1235980550691926019, language=CN, title=预裂爆破轴向不耦合装药合理空气柱长度研究, columnId=1236276106219811026, journalTitle=矿冶工程杂志, columnName=采矿, runingTitle=null, highlight=null, articleAbstract=

合理的轴向空气柱长度可以使相邻炮孔间形成贯通裂缝，同时孔壁不产生粉碎区，对预裂爆破具有重要作用。通过理论计算分析了孔壁初始冲击压力沿炮孔轴向的变化特征；针对巴润露天矿爆破工程，初步估算了预裂爆破合理的轴向空气柱长度，约为1.5 m，并采用数值模拟分析不同轴向空气柱长度下的爆破后应力变化趋势。结果表明：空气柱段孔壁初始压力沿炮孔轴线呈“U”形分布特征，空气柱中间位置处孔壁压力最小。轴向空气柱长度1.5~2.0 m时，数值模拟应力值回落至10 MPa左右时出现振荡，可满足岩石孔间裂缝起裂和扩展的要求。巴润采场工程实践表明，空气柱长度1.5 m时预裂爆破后坡面不平整度小于10 cm、半壁孔痕率大于85%、爆破振动合成速度为5.782 cm/s，各项指标较优。

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^2.Maanshan Institute of Mining Research Blasting Engineering Co., Ltd., Maanshan 243000, Anhui, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1314907662563762470, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1314907659627749654, authorId=1314907662362435874, language=CN, stringName=师强强, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=^{1, 2}, address=^1．中钢集团马鞍山矿山研究总院股份有限公司，安徽 马鞍山 243000
^2．马鞍山矿山研究院爆破工程有限责任公司，安徽 马鞍山 243000, bio={"content":"

师强强（1989—），男，江苏丰县人，硕士，高级工程师，从事爆破工程技术方面的研究。E-mail: shiqiang_308@163.com

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师强强（1989—），男，江苏丰县人，硕士，高级工程师，从事爆破工程技术方面的研究。E-mail: shiqiang_308@163.com

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