Article(id=1322164831386452465, 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=1734796800000, receivedDateStr=2024-12-22, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1793158260437, onlineDateStr=2026-10-28, pubDate=1766592000000, pubDateStr=2025-12-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793158260437, onlineIssueDateStr=2026-10-28, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793158260437, creator=13701087609, updateTime=1793158260437, 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=33, endPage=40, ext={EN=ArticleExt(id=1322164831579390450, articleId=1322164831386452465, tenantId=1146029695717560320, journalId=1225396423026438145, language=EN, title=Influence of Endwall Roughness and Ore grading Condition on the Ore Drawing Effect of Non-Pillar Sublevel Caving Method, columnId=null, journalTitle=Mining Research and Development, columnName=null, runingTitle=null, highlight=null, articleAbstract=
To investigate the influences of endwall roughness and ore grading condition on the ore drawing effect of non-pillar sublevel caving method, based on a single segment and single access ore drawing model, the joint roughness coefficient (JRC) of rock structure surface was introduced to quantify the endwall roughness. Physical experiments were conducted under five types of endwall roughness and two types of ore grading conditions, and the changes in recovery rate, dilution rate, and release amount of ore, as well as the development characteristics of the release body morphology, were systematically analyzed. The results indicate that the endwall roughness and the ore grading conditions have a significant impact on the flowability of the ore, thereby determining the variation characteristics of the recovery rate and dilution rate. As the proportion of fine particles in the ore grading and the endwall roughness decrease, the ore recovery rate shows an upward trend. The dilution rate shows a trend of first increasing, then decreasing, and then increasing again as both factors increase. When the content of fine particles is low and the JRC value is 0, the ore flowability is the optimal, the recovery rate is the highest at 75.15%, and the dilution rate is the lowest at 32.09%. In addition, reducing the proportion of fine particles in the ore grading and decreasing the endwall roughness can promote the development of the transverse axis length and suppress its height development of the ore release body, thereby increasing the ore recovery rate and optimizing the overall ore drawing indicators.
, authors=Zhitong HONG
1, Zhiqiang ZHANG
1, 2, Liang WANG
1, Xuxiao MA
1, Lu GAO
1, Xinrong WANG
1, 2, authorsList=Zhitong HONG, Zhiqiang ZHANG, Liang WANG, Xuxiao MA, Lu GAO, Xinrong WANG, authorCompany=null, correspAuthors=Zhiqiang ZHANG, 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=1322164837812126217, articleId=1322164831386452465, tenantId=1146029695717560320, journalId=1225396423026438145, language=CN, title=端壁粗糙度与矿石级配条件对无底柱分段崩落法放矿效果的影响, columnId=1226462294490657775, journalTitle=矿业研究与开发, columnName=采矿与矿山充填, runingTitle=null, highlight=null, articleAbstract=
为探究端壁粗糙度与矿石级配条件对无底柱分段崩落法放矿效果的影响,基于单分段单进路放矿模型,引入岩体结构面粗糙度系数(Joint Roughness Coefficient,JRC)对端壁粗糙度进行量化,开展了5种端壁粗糙度与2种矿石级配条件下的物理试验,系统分析了矿石回采率、贫化率、矿岩放出量的变化规律与放出体形态发育特征。结果表明,端壁粗糙度与矿石级配条件对矿石流动性具有显著影响,进而决定了回采率与贫化率的变化特征。随着矿石级配中细小颗粒占比降低和端壁粗糙度的减小,矿石回采率呈上升趋势;贫化率则随二者增大呈现先增大后减小再增大的变化趋势。当细小颗粒含量较低且JRC值为0时,矿石流动性最佳,回采率最高,为75.15%,贫化率最低,为32.09%。此外,降低矿石级配中细小颗粒占比和减小端壁粗糙度,可促进放出体横向轴长发育,抑制其高度发育,进而提升矿石回采量,优化整体放矿指标。
, authors=洪芷彤
1, 张治强
1, 2, 王亮
1, 马绪骁
1, 高禄
1, 王薪荣
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洪芷彤(1999—),女,辽宁铁岭人,硕士研究生,主要从事金属矿床地下开采研究。E-mail:1069553295@qq.com
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洪芷彤(1999—),女,辽宁铁岭人,硕士研究生,主要从事金属矿床地下开采研究。E-mail:1069553295@qq.com
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1.辽宁科技大学 矿业工程学院,辽宁 鞍山市 114051
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2.辽宁省金属矿产资源绿色开采工程研究中心,辽宁 鞍山市 114051)])]), Author(id=1322164840433566236, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164831386452465, orderNo=2, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1322164840525840926, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164831386452465, authorId=1322164840433566236, language=EN, stringName=Liang WANG, firstName=Liang, middleName=null, lastName=WANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1.School of Ming Engineering, University of Science and Technology-Liaoning, Anshan, Liaoning 114051, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1322164840609727007, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164831386452465, authorId=1322164840433566236, language=CN, stringName=王亮, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1.辽宁科技大学 矿业工程学院,辽宁 鞍山市 114051, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1322164839628259850, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164831386452465, xref=1., ext=[AuthorCompanyExt(id=1322164839674397195, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164831386452465, companyId=1322164839628259850, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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1.辽宁科技大学 矿业工程学院,辽宁 鞍山市 114051)])]), Author(id=1322164840706196001, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164831386452465, orderNo=3, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1322164840790082083, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164831386452465, authorId=1322164840706196001, language=EN, stringName=Xuxiao MA, firstName=Xuxiao, middleName=null, lastName=MA, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1.School of Ming Engineering, University of Science and Technology-Liaoning, Anshan, Liaoning 114051, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1322164840873968164, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164831386452465, authorId=1322164840706196001, language=CN, stringName=马绪骁, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1, 2, address=
1.School of Ming Engineering, University of Science and Technology-Liaoning, Anshan, Liaoning 114051, China
2.Engineering Research Center of Green Mining of Mental Mineral Resources Liaoning Province, Anshan, Liaoning 114051, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1322164841427616303, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164831386452465, authorId=1322164841217901099, language=CN, stringName=王薪荣, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1.辽宁科技大学 矿业工程学院,辽宁 鞍山市 114051
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1.辽宁科技大学 矿业工程学院,辽宁 鞍山市 114051)]), AuthorCompany(id=1322164839779254797, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164831386452465, xref=2., ext=[AuthorCompanyExt(id=1322164839791837710, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164831386452465, companyId=1322164839779254797, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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1.辽宁科技大学 矿业工程学院,辽宁 鞍山市 114051)]), AuthorCompany(id=1322164839779254797, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164831386452465, xref=2., ext=[AuthorCompanyExt(id=1322164839791837710, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164831386452465, companyId=1322164839779254797, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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2.辽宁省金属矿产资源绿色开采工程研究中心,辽宁 鞍山市 114051)])], figs=[ArticleFig(id=1322164843965170234, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164831386452465, language=EN, label=Fig.1, caption=
Experiment model of ore drawing (Unit:mm), figureFileSmall=sp2OD8QEH2jlgdpDXKcyXQ==, figureFileBig=Rt79WVrh1Yg3Try/0WBvHQ==, tableContent=null), ArticleFig(id=1322164844049056315, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164831386452465, language=CN, label=图1, caption=
放矿试验模型(单位:mm), figureFileSmall=sp2OD8QEH2jlgdpDXKcyXQ==, figureFileBig=Rt79WVrh1Yg3Try/0WBvHQ==, tableContent=null), ArticleFig(id=1322164844296520252, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164831386452465, language=EN, label=Fig.2, caption=
Reconstructed standard JRC curves, figureFileSmall=4BetYQZKu3BvUBsTxFaGSw==, figureFileBig=E3APcYj81biJetgdkjjFwg==, tableContent=null), ArticleFig(id=1322164844372017725, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164831386452465, language=CN, label=图2, caption=
重构后的标准JRC曲线, figureFileSmall=4BetYQZKu3BvUBsTxFaGSw==, figureFileBig=E3APcYj81biJetgdkjjFwg==, tableContent=null), ArticleFig(id=1322164844455903806, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164831386452465, language=EN, label=Fig.3, caption=
JRC fitting curves for pasting adhesive particles, figureFileSmall=TZcsRVKnC7wiZOhIsxeEHg==, figureFileBig=xnSlzzdtQSQ3Q514hXLXwQ==, tableContent=null), ArticleFig(id=1322164844556567103, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164831386452465, language=CN, label=图3, caption=
粘贴胶粒的JRC曲线拟合, figureFileSmall=TZcsRVKnC7wiZOhIsxeEHg==, figureFileBig=xnSlzzdtQSQ3Q514hXLXwQ==, tableContent=null), ArticleFig(id=1322164844665619008, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164831386452465, language=EN, label=Fig.4, caption=
Drawing models, figureFileSmall=hxgnGvtej2aA/qiNYzN+iw==, figureFileBig=DsPZmnoJ0SAk9hSLszmDVg==, tableContent=null), ArticleFig(id=1322164844741116481, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164831386452465, language=CN, label=图4, caption=
放矿模型, figureFileSmall=hxgnGvtej2aA/qiNYzN+iw==, figureFileBig=DsPZmnoJ0SAk9hSLszmDVg==, tableContent=null), ArticleFig(id=1322164844820808258, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164831386452465, language=EN, label=Fig.5, caption=
Variation curves of ore recovery rate, figureFileSmall=pDybIoHYSKBcvaCoNGhPfQ==, figureFileBig=/uORsaEENYYnJiXpf30i7w==, tableContent=null), ArticleFig(id=1322164844896305731, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164831386452465, language=CN, label=图5, caption=
矿石回采率变化曲线, figureFileSmall=pDybIoHYSKBcvaCoNGhPfQ==, figureFileBig=/uORsaEENYYnJiXpf30i7w==, tableContent=null), ArticleFig(id=1322164844967608900, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164831386452465, language=EN, label=Fig.6, caption=
Variation curves of ore dilution rate, figureFileSmall=wKHqhMbffPPIxEmN762JXA==, figureFileBig=FsIL1Zlpyh8NPsc5VfJqNw==, tableContent=null), ArticleFig(id=1322164845034717765, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164831386452465, language=CN, label=图6, caption=
矿石贫化率变化曲线, figureFileSmall=wKHqhMbffPPIxEmN762JXA==, figureFileBig=FsIL1Zlpyh8NPsc5VfJqNw==, tableContent=null), ArticleFig(id=1322164845122798150, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164831386452465, language=EN, label=Fig.7, caption=
Variation curves of released amount of ore, figureFileSmall=pb0eQ+PLRMD94tjFxI4gsQ==, figureFileBig=+V5fBp2XtQfu3Z4b8/l4eQ==, tableContent=null), ArticleFig(id=1322164845202489927, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164831386452465, language=CN, label=图7, caption=
矿岩放出量变化曲线, figureFileSmall=pb0eQ+PLRMD94tjFxI4gsQ==, figureFileBig=+V5fBp2XtQfu3Z4b8/l4eQ==, tableContent=null), ArticleFig(id=1322164845303153224, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164831386452465, language=EN, label=Fig.8, caption=
Variation curves of released amount of ore when the height of the release body is constant, figureFileSmall=//jrn6t6LPyIyfZiqGUSYQ==, figureFileBig=NWrIx59MeAf1p8ndi0ADpQ==, tableContent=null), ArticleFig(id=1322164845500285513, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164831386452465, language=CN, label=图8, caption=
放出体高度一定时矿岩放出量变化曲线, figureFileSmall=//jrn6t6LPyIyfZiqGUSYQ==, figureFileBig=NWrIx59MeAf1p8ndi0ADpQ==, tableContent=null), ArticleFig(id=1322164845630308938, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164831386452465, language=EN, label=Fig.9, caption=
Variation curves of released amount of ore under different widths of release body, figureFileSmall=xI6WBZSEyyXQb4Dd/JXWKQ==, figureFileBig=rvqI/7gnHqmCRgV2L0Dygg==, tableContent=null), ArticleFig(id=1322164845710000715, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164831386452465, language=CN, label=图9, caption=
不同放出体宽度下的矿岩放出量变化曲线, figureFileSmall=xI6WBZSEyyXQb4Dd/JXWKQ==, figureFileBig=rvqI/7gnHqmCRgV2L0Dygg==, tableContent=null), ArticleFig(id=1322164845785498188, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164831386452465, language=EN, label=Fig.10, caption=
Variation curves of released amount of ore under the longitudinal axis length of 4.5 m, figureFileSmall=nBd49oKtWjHQ/2EfjD6OBQ==, figureFileBig=Wwqyu7RQ8+KDOOT5GjnJvw==, tableContent=null), ArticleFig(id=1322164845856801357, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164831386452465, language=CN, label=图10, caption=
4.5 m纵向轴长下的矿岩放出量变化曲线, figureFileSmall=nBd49oKtWjHQ/2EfjD6OBQ==, figureFileBig=Wwqyu7RQ8+KDOOT5GjnJvw==, tableContent=null), ArticleFig(id=1322164845944881742, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164831386452465, language=EN, label=Fig.11, caption=
Schematic of morphological changes of release body, figureFileSmall=Sg3R6JnE28xqCyY6EVZ8ew==, figureFileBig=mEVfU19utrksZ7vfA4cdkQ==, tableContent=null), ArticleFig(id=1322164845999407695, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164831386452465, language=CN, label=图11, caption=
放出体形态变化示意, figureFileSmall=Sg3R6JnE28xqCyY6EVZ8ew==, figureFileBig=mEVfU19utrksZ7vfA4cdkQ==, tableContent=null), ArticleFig(id=1322164846062322256, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164831386452465, language=EN, label=Table 1, caption=
Grading composition of mineral rock partides
, figureFileSmall=null, figureFileBig=null, tableContent=
| 对应现场粒径/m | 试验粒径/mm | A组矿石比例/% | B组矿石比例/% | 废石比例/% |
|---|
| 0~0.25 | 0~5 | 10 | 5 | — |
| 0.25~0.4 | 5~8 | 15 | 10 | — |
| 0.4~0.65 | 8~12 | 50 | 60 | 30 |
| 0.65~0.8 | 12~16 | 15 | 20 | 60 |
| 0.8~1 | 16~20 | 10 | 5 | 10 |
), ArticleFig(id=1322164846142014033, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164831386452465, language=CN, label=表1, caption=
矿岩颗粒级配组成
, figureFileSmall=null, figureFileBig=null, tableContent=
| 对应现场粒径/m | 试验粒径/mm | A组矿石比例/% | B组矿石比例/% | 废石比例/% |
|---|
| 0~0.25 | 0~5 | 10 | 5 | — |
| 0.25~0.4 | 5~8 | 15 | 10 | — |
| 0.4~0.65 | 8~12 | 50 | 60 | 30 |
| 0.65~0.8 | 12~16 | 15 | 20 | 60 |
| 0.8~1 | 16~20 | 10 | 5 | 10 |
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