Article(id=1314908156921209514, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1314908074188562588, articleNumber=null, orderNo=null, doi=10.3969/j.issn.0253-6099.2026.04.009, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1770393600000, receivedDateStr=2026-02-07, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1791428134421, onlineDateStr=2026-10-08, pubDate=null, pubDateStr=null, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1791428134421, onlineIssueDateStr=2026-10-08, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1791428134421, creator=13701087609, updateTime=1791428134421, 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=67, endPage=73, ext={EN=ArticleExt(id=1314908157168673452, articleId=1314908156921209514, tenantId=1146029695717560320, journalId=1235980550691926019, language=EN, title=Burn Cut Design with Ultra-Deep Central Hole for Fractured Surrounding Rock, columnId=1236276106018484431, journalTitle=Mining and Metallurgical Engineering, columnName=MINING, runingTitle=null, highlight=null, articleAbstract=

Aiming at the problems of low blasthole utilization rate, high specific explosive consumption, high detonator consumption, and irregular roadway forming during the excavation of roadways with fractured surrounding rock in a gold mine, an optimization method for burn cut parameters by adopting ultra-deep central hole is proposed. The optimized rock-breaking mechanism is revealed by triple synergistic effect, including enhanced rock throwing via central hole charging, stress wave guidance through large empty-hole spacing, and bottom pre-fragmentation. A three-dimensional cut blasting model is established using ANSYS/LS-DYNA software to simulate four working conditions featuring a 200 mm ultra-deep central hole and enhanced bottom charge, with empty-hole spacings of 130 mm, 160 mm, 190 mm, and 220 mm. By analyzing the effective stress distribution, cut-cavity dimensions, rock-throwing process, and energy variation under different working conditions, the optimal empty-hole spacing is finally determined to be 160 mm. Field test results show that the optimized blasting scheme increases the blasthole utilization rate from 87% to 95.8%-97.8%, reduces explosive consumption by 13.3% and detonator consumption by 14.29%, and controls the over-excavation of two roadway sidewalls within 100 mm. Such findings can provide a theoretical basis and technical reference for similar roadway excavation engineering in fractured surrounding rock.

, authors=Jia LUO^{1, 2}, Hao ZHANG^{1, 2}, Pengfei GAO^{1, 2}, authorsList=Jia LUO, Hao ZHANG, Pengfei GAO, 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=1314908157999145645, articleId=1314908156921209514, tenantId=1146029695717560320, journalId=1235980550691926019, language=CN, title=基于中心孔超深的破碎围岩直眼掏槽爆破技术研究, columnId=1236276106219811026, journalTitle=矿冶工程杂志, columnName=采矿, runingTitle=null, highlight=null, articleAbstract=

针对某金矿破碎平巷掘进中炮孔利用率低、炸药单耗高、雷管消耗大及成巷不规则等问题，提出了基于中心孔超深的直眼掏槽爆破参数优化方法，揭示了“中心孔装药加强抛掷”“大空孔间距应力波导向”与“底部预破碎”三重机制优化破岩机理。采用ANSYS/LS-DYNA软件建立三维掏槽爆破模型，模拟中心孔超深200 mm和加强孔底装药下，空孔间距分别为130、160、190及220 mm的4种工况，通过分析不同工况下有效应力分布、槽腔范围、抛掷过程及能量变化，最终确定最优空孔间距为160 mm。现场试验证实，优化后炮孔利用率由87%提升至95.8%~97.8%，炸药量减少13.3%，雷管数减少14.29%，两帮超挖不大于100 mm。研究成果可为同类工程提供理论依据与技术参考。

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罗佳（1987—），男，湖南宁乡人，硕士，高级工程师，主要从事采矿工艺、爆破技术、膏体充填等工作。E-mail: 827939986@qq.com

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罗佳（1987—），男，湖南宁乡人，硕士，高级工程师，主要从事采矿工艺、爆破技术、膏体充填等工作。E-mail: 827939986@qq.com

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