Article(id=1322164939616272575, tenantId=1146029695717560320, journalId=1225396423026438145, issueId=1322164760943116291, 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=1737561600000, receivedDateStr=2025-01-23, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1793158286240, onlineDateStr=2026-10-28, pubDate=1766592000000, pubDateStr=2025-12-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793158286240, onlineIssueDateStr=2026-10-28, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793158286240, creator=13701087609, updateTime=1793158286240, updator=13701087609, issue=Issue{id=1322164760943116291, tenantId=1146029695717560320, journalId=1225396423026438145, year='2025', volume='45', issue='12', pageStart='1', pageEnd='302', issueExtLink='null', onlineDate='null', pubDate='1766592000000', pubDateStr='2025-12-25', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793158243641, creator='13701087609', updateTime=1793158929367, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1322167637195477357, tenantId=1146029695717560320, journalId=1225396423026438145, issueId=1322164760943116291, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1322167637199671662, tenantId=1146029695717560320, journalId=1225396423026438145, issueId=1322164760943116291, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=57, endPage=63, ext={EN=ArticleExt(id=1322164939813404864, articleId=1322164939616272575, tenantId=1146029695717560320, journalId=1225396423026438145, language=EN, title=Research on the Causes and Treatment Measures of Large Blocks Produced by Fan-Shaped Hole Blasting in Broken Ore-Body, columnId=null, journalTitle=Mining Research and Development, columnName=null, runingTitle=null, highlight=null, articleAbstract=

The difficulty of controlling the blasting effect of fan-shaped blasting holes in the non-pillar sublevel caving method significantly affects the mining efficiency in the mining area. Research was conducted on the issues of high large block rate and poor ore recovery index as well as poor safety of mining operations in the 1 580 m sublevel caving stope under the condition of broken ore-body in the west No.2 mining area in Longshou Mine. The analysis shows that the main reason of the high block rate is that the side holes in upper sublevel edge are buried by the blasting pile and not fully blasted, and the serious blockage of the blasting row holes in this section results in insufficient charging. Analysis shows that a high block rate can have adverse effects on the mining indicators, operational safety, mining efficiency, and mining costs of the mining area. In order to reduce the large block rate in the mining area, a series of technical and management measures were proposed, including optimizing the form and size of the mining drift, improving the parameters of fan-shaped blast holes, introducing through hole equipment suitable for the working environment, testing pre-charge technology, and strengthening blasting quality management. The large block rate in the mining area has been successfully reduced from 16％ to 5％, the ore recovery index in the mining area has been increased from 68％ to 82％, and the safety of the mining area has been significantly improved.

, authors=Zhen GONG¹, Lin ZUO², Dengfeng SU², Baohui TAN², authorsList=Zhen GONG, Lin ZUO, Dengfeng SU, Baohui TAN, authorCompany=null, correspAuthors=Lin ZUO, 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=1322164942959132881, articleId=1322164939616272575, tenantId=1146029695717560320, journalId=1225396423026438145, language=CN, title=破碎矿体扇形孔爆破大块产生原因及处理措施研究, columnId=1226462294490657775, journalTitle=矿业研究与开发, columnName=采矿与矿山充填, runingTitle=null, highlight=null, articleAbstract=

无底柱分段崩落法扇形炮孔的爆破效果控制难度较大且显著影响着采场回采效率。针对龙首矿西二采区破碎矿体条件下，无底柱分段崩落法采场1 580 m分段扇形炮孔爆破后大块率高导致的采场矿石回采指标差以及采矿作业安全性差等问题开展研究，经分析得出导致大块率高的主要原因是上分段边孔被爆堆掩埋未能充分爆破，以及本分段炮排堵孔严重致使装药不到位。分析表明，大块率过高会对采场回采指标、作业安全性、采矿效率及采矿成本等造成不利影响。为降低采场大块率，提出优化进路断面形式及尺寸、改进扇形孔爆破参数、引进适应作业环境的透孔设备、试验预装药技术及加强爆破质量管理等一系列技术与管理措施，成功将采场大块率由16％降低至5％，采场矿石回采率由68％提升至82％，采场安全性也得到显著改善。

, authors=龚臻¹, 左琳², 粟登峰², 谭宝会², authorsList=龚臻, 左琳, 粟登峰, 谭宝会, authorCompany=null, correspAuthors=左琳, authorNote=, correspAuthorsNote=, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=PA7qw73+9YCXqO1ABdFmCQ==, magXml=hr2uKKdAuaUmdH23Mlyd5Q==, pdfUrl=null, pdf=1JaBS838fLzAm8YMAUWBVg==, pdfFileSize=4753347, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=bmDzUVD8SwvKGsF2WwhyXQ==, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=Mo3f/zq40xRmwc8P+PttFA==, mapNumber=null, fund=null)}, authors=[Author(id=1322164943491809497, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164939616272575, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=2426638971@qq.com, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1322164943617638619, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164939616272575, authorId=1322164943491809497, language=EN, stringName=Zhen GONG, firstName=Zhen, middleName=null, lastName=GONG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=¹, address=^1.Longshou Mine, Jinchuan Group Nickel and Cobalt Co., Ltd., Jinchang, Gansu 737100, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1322164943693136092, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164939616272575, authorId=1322164943491809497, language=CN, stringName=龚臻, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=¹, address=^1.金川集团镍钴股份有限公司龙首矿，甘肃 金昌市　737100, bio={"content":"

龚臻（1984—），男，湖南永州人，硕士，高级工程师，主要从事矿山技术及管理等方面的工作。E-mail：2426638971@qq.com

"}, bioImg=null, bioContent=

龚臻（1984—），男，湖南永州人，硕士，高级工程师，主要从事矿山技术及管理等方面的工作。E-mail：2426638971@qq.com

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