Article(id=1321893354820973390, tenantId=1146029695717560320, journalId=1225396423026438145, issueId=1321893331622286028, 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=1753113600000, receivedDateStr=2025-07-22, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1793093535379, onlineDateStr=2026-10-27, pubDate=1784908800000, pubDateStr=2026-07-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793093535379, onlineIssueDateStr=2026-10-27, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793093535379, creator=13701087609, updateTime=1793093535379, updator=13701087609, issue=Issue{id=1321893331622286028, tenantId=1146029695717560320, journalId=1225396423026438145, year='2026', volume='46', issue='7', pageStart='1', pageEnd='320', issueExtLink='null', onlineDate='null', pubDate='1784908800000', pubDateStr='2026-07-25', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793093529849, creator='13701087609', updateTime=1793094587578, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1321897768357048353, tenantId=1146029695717560320, journalId=1225396423026438145, issueId=1321893331622286028, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1321897768357048354, tenantId=1146029695717560320, journalId=1225396423026438145, issueId=1321893331622286028, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=124, endPage=132, ext={EN=ArticleExt(id=1321893354997134159, articleId=1321893354820973390, tenantId=1146029695717560320, journalId=1225396423026438145, language=EN, title=Optimization Study on Roadway Support Technology in Fractured Quartzite of Chambishi Copper Mine, columnId=null, journalTitle=Mining Research and Development, columnName=null, runingTitle=null, highlight=null, articleAbstract=

The southeast orebody of Chambishi Copper Mine is hosted in shallow metamorphic rock strata. The surrounding rock features well-developed joints and fissures. Under the influence of high in-situ stress and long-term mining disturbances, the roadways are prone to disasters such as roof fracturing, anchor bolt loosening, and anchor mesh collapse. To address the issues of poor support performance and insufficient adaptability of the existing split-set anchor bolts, an analysis of joint fissures and rock mechanical properties was conducted for the fractured quartzite in the hanging wall and footwall of the orebody. Based on the fracturing and deformation characteristics of typical roadways, the applicability and mechanical properties of different anchor bolt types were comprehensively considered, and resin anchor bolts were proposed to replace the original split-set anchor bolts for supporting roadways in fractured surrounding rock. The 3DEC numerical simulation method was employed to establish a typical roadway model, and the displacement control effects and surrounding rock response characteristics of the two support schemes were compared and analyzed. The results show that the quality grade of the quartzite rock mass is determined to be Class III based on the combined application of the RMR method, Q-system method, and BQ method. When resin anchor bolts with a length of 2.4 m and a spacing and row distance of 1.2 m are used to replace the original split-set anchor bolts for support, the roof subsidence decreases by 8.4%, the floor heave decreases by 4.4%, the inward convergence deformation of the sidewalls is significantly improved, and the overall stability of the roadway is enhanced compared with that achieved by split-set anchor bolts. The industrial application results show that the average pullout force of the resin anchor bolts is 174.17 kN, which is far higher than the design value of 101.47 kN. Although the initial support cost is 2.75 times that of the split-set anchor bolt support, the supplementary support rate is reduced to 2.46%, and the supplementary support cost is reduced by approximately 84%. The research results can provide technical support and a theoretical basis for support optimization in similar roadway engineering.

, authors=Pengfei Zhang¹, Wutian Gong¹, Yiming Wang², Bolin Xiao², Pengpeng Liu², authorsList=Pengfei Zhang, Wutian Gong, Yiming Wang, Bolin Xiao, Pengpeng Liu, authorCompany=null, correspAuthors=Yiming Wang, 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=1321893355248792400, articleId=1321893354820973390, tenantId=1146029695717560320, journalId=1225396423026438145, language=CN, title=谦比希铜矿破碎石英岩内巷道支护技术优化, columnId=1226462295417598973, journalTitle=矿业研究与开发, columnName=矿山安全与环保, runingTitle=null, highlight=null, articleAbstract=

谦比希铜矿东南矿体赋存于浅变质岩地层中，围岩节理裂隙发育，在高地应力作用与长期采动扰动作用下，巷道易出现顶板破碎、锚杆松脱、锚网坍落等灾害。为解决现有管缝锚杆支护效果差、适应性不足的问题，针对矿体上、下盘破碎石英岩开展节理裂隙与岩石力学特性分析，基于典型巷道破碎变形特征，综合考虑不同锚杆类型的适用性与力学性能，提出采用树脂锚杆替代原有管缝式锚杆进行破碎围岩巷道支护，并运用3DEC数值模拟方法建立典型巷道模型，对比分析两种支护方案的位移控制效果与围岩响应特征。结果表明：综合RMR法、Q系统法、BQ法确定石英岩岩体质量等级为Ⅲ级；用树脂锚杆代替原有管缝锚杆进行支护，锚杆长度为2.4 m，间距、排距均为1.2 m；相比于管缝锚杆，采用树脂锚杆支护后，顶板下沉量下降8.4%，底板底鼓量降低4.4%，帮壁向内收敛变形得到显著改善，巷道整体稳定性提升。工业应用结果表明，树脂锚杆平均拉拔力为174.17 kN，远高于设计值101.47 kN，初支成本是管缝锚杆支护的2.75倍，补支率降至2.46%，补支成本降低约84%。研究结果可为同类巷道工程支护优化提供技术支撑与理论依据。

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张鹏飞（1985—），男，河南济源人，硕士，高级工程师，主要从事矿山采矿工程与岩石力学相关工作。E-mail:dapeng3017@163.com

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张鹏飞（1985—），男，河南济源人，硕士，高级工程师，主要从事矿山采矿工程与岩石力学相关工作。E-mail:dapeng3017@163.com

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