Article(id=1322164548216406567, tenantId=1146029695717560320, journalId=1225396423026438145, issueId=1322164546295410919, 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=1731254400000, receivedDateStr=2024-11-11, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1793158192923, onlineDateStr=2026-10-28, pubDate=1764000000000, pubDateStr=2025-11-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793158192923, onlineIssueDateStr=2026-10-28, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793158192923, creator=13701087609, updateTime=1793158192923, updator=13701087609, issue=Issue{id=1322164546295410919, tenantId=1146029695717560320, journalId=1225396423026438145, year='2025', volume='45', issue='11', pageStart='1', pageEnd='284', issueExtLink='null', onlineDate='null', pubDate='1764000000000', pubDateStr='2025-11-25', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793158192465, creator='13701087609', updateTime=1793158905697, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1322167537857573862, tenantId=1146029695717560320, journalId=1225396423026438145, issueId=1322164546295410919, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1322167537861768167, tenantId=1146029695717560320, journalId=1225396423026438145, issueId=1322164546295410919, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=46, endPage=51, ext={EN=ArticleExt(id=1322164550066094634, articleId=1322164548216406567, tenantId=1146029695717560320, journalId=1225396423026438145, language=EN, title=Influences of Brow Line Damage Scale in Mining Roadway on Ore Drawing Effect Using Caving Mining Method, columnId=null, journalTitle=Mining Research and Development, columnName=null, runingTitle=null, highlight=null, articleAbstract=
To investigate the influence of the brow line damage scale on the ore drawing effect, based on the random medium ore drawing theory, a single-segment end ore drawing model was established using the physical similarity test method. The ore drawing test under the brow line damage was carried out from the two scales of the brow line damage width and height. The development law of the draw-out body under different test parameters was determined by the hole-reach method, and the ore drawing loss and dilution index was calculated. The results show that under the same cut-off grade drawing conditions, with the increase of the brow line damage width, the profile width of the drawn body in the direction of the mining approach increases significantly, while the profile width of the drawn body in the direction perpendicular of the mining approach does not change significantly. For every 0.5 m increase in the brow line damage width, the proportion of front waste rock increases by an average of 1.2 percentage points, the proportion of top waste rock decreases by an average of 0.5 percentage points, and the ore recovery rate decreases by an average of 0.6 percentage points. When the brow line damage height increases, the development direction of the drawn body is mainly in the vertical direction, and the shape of the drawn body is more slender. For every 0.5 m increase in the brow line damage height, the proportion of front waste rock decreases by an average of 0.2 percentage points, the proportion of top waste rock increases by an average of 3.9 percentage points, and the ore recovery rate decreases by an average of 5.0 percentage points. The influence of the brow line damage height on the ore drawing effect is significantly higher than that of the brow line damage width. Therefore, in engineering practice, priority should be given to taking measures to avoid and reduce the damage of brow line in the height direction.
, authors=Jiangdong ZHAO, Yanliang WEN, Bingjie ZHANG, authorsList=Jiangdong ZHAO, Yanliang WEN, Bingjie ZHANG, authorCompany=null, correspAuthors=Yanliang WEN, 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=1322164556164612665, articleId=1322164548216406567, tenantId=1146029695717560320, journalId=1225396423026438145, language=CN, title=崩落法出矿巷道眉线破坏尺度对放矿效果的影响, columnId=1226462294490657775, journalTitle=矿业研究与开发, columnName=采矿与矿山充填, runingTitle=null, highlight=null, articleAbstract=
为探究眉线破坏尺度对放矿效果的影响,基于随机介质放矿理论,采用物理相似试验方法,建立单分段端部放矿模型,从眉线破坏宽度和高度两个尺度开展眉线破坏下的放矿试验,通过达孔量法确定不同试验参数下放出体形态发育规律,并计算放矿损失贫化指标。结果表明:在相同截止品位放矿条件下,随着眉线破坏宽度的增加,回采进路方向放出体剖面宽度显著增加,而垂直回采进路方向的放出体剖面宽度无明显变化;眉线破坏宽度每增加0.5 m,正面废石占比平均增加1.2个百分点,顶部废石占比平均降低0.5个百分点,矿石回收率平均降低0.6个百分点;眉线破坏高度增加时,放出体的发育方向以垂直方向为主,放出体的形态更为瘦长;眉线破坏高度每增加0.5 m,正面废石占比平均降低0.2个百分点,顶部废石占比平均增加3.9个百分点,矿石回收率降低5.0个百分点;眉线破坏高度对于放矿效果的影响明显高于眉线破坏宽度。因此,在工程实际中,应优先采取措施避免和降低眉线在高度方向上发生破坏。
, authors=赵江东, 温彦良, 张冰洁, authorsList=赵江东, 温彦良, 张冰洁, authorCompany=null, correspAuthors=温彦良, authorNote=
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赵江东(2001—),男,四川达州人,硕士研究生,主要研究方向为崩落法采矿技术。E-mail:206967662@qq.com
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赵江东(2001—),男,四川达州人,硕士研究生,主要研究方向为崩落法采矿技术。E-mail:206967662@qq.com
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Drawing test model (unit:mm), figureFileSmall=1WLOw7EVFDubY8wNGOWQwA==, figureFileBig=gKFoCoYQUb9n5Jm55HiTXQ==, tableContent=null), ArticleFig(id=1322164561344578138, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164548216406567, language=CN, label=图1, caption=
放矿试验模型(单位:mm), figureFileSmall=1WLOw7EVFDubY8wNGOWQwA==, figureFileBig=gKFoCoYQUb9n5Jm55HiTXQ==, tableContent=null), ArticleFig(id=1322164563026494043, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164548216406567, language=EN, label=Fig.2, caption=
Placement of marker particles, figureFileSmall=MF0JX5MohANiDkA1IMox0g==, figureFileBig=YSbhmHVM9+DkFm8HQr+mdQ==, tableContent=null), ArticleFig(id=1322164563395592796, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164548216406567, language=CN, label=图2, caption=
标志颗粒的摆放, figureFileSmall=MF0JX5MohANiDkA1IMox0g==, figureFileBig=YSbhmHVM9+DkFm8HQr+mdQ==, tableContent=null), ArticleFig(id=1322164563487867485, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164548216406567, language=EN, label=Fig.3, caption=
Effect of brow line damage height to the development morphology of the draw-out body, figureFileSmall=5gbvYQXWs51+QzuLtrc6tA==, figureFileBig=PDerVilDFFhvK0EXOBupXw==, tableContent=null), ArticleFig(id=1322164563781468766, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164548216406567, language=CN, label=图3, caption=
眉线破坏高度对放出体发育形态的影响, figureFileSmall=5gbvYQXWs51+QzuLtrc6tA==, figureFileBig=PDerVilDFFhvK0EXOBupXw==, tableContent=null), ArticleFig(id=1322164563873743455, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164548216406567, language=EN, label=Fig.4, caption=
Effect of brow line damage width to the development morphology of the draw-out body, figureFileSmall=AdLMKjipZCQZPO7iZPvF/A==, figureFileBig=0YdS4bJIkMJiV5qFTYhTfg==, tableContent=null), ArticleFig(id=1322164564007961184, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164548216406567, language=CN, label=图4, caption=
眉线破坏宽度对放出体发育形态的影响, figureFileSmall=AdLMKjipZCQZPO7iZPvF/A==, figureFileBig=0YdS4bJIkMJiV5qFTYhTfg==, tableContent=null), ArticleFig(id=1322164564163150433, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164548216406567, language=EN, label=Fig.5, caption=
Effect of brow line damage scale on the proportion of front waste rock, figureFileSmall=5KMffVgJhsaUCpMjvZsSbA==, figureFileBig=1Sn3JWU+dV1/QZ3JE2S/8A==, tableContent=null), ArticleFig(id=1322164564242842210, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164548216406567, language=CN, label=图5, caption=
眉线破坏尺度对正面废石占比的影响, figureFileSmall=5KMffVgJhsaUCpMjvZsSbA==, figureFileBig=1Sn3JWU+dV1/QZ3JE2S/8A==, tableContent=null), ArticleFig(id=1322164564305756771, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164548216406567, language=EN, label=Fig.6, caption=
Effect of brow line damage scale on the proportion of top waste rock, figureFileSmall=C5nErPN0IlGdEOG86+tjgw==, figureFileBig=k4MrFVLS/XzDwSr+ZEAhug==, tableContent=null), ArticleFig(id=1322164564372865636, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164548216406567, language=CN, label=图6, caption=
眉线破坏尺度对顶部废石占比的影响, figureFileSmall=C5nErPN0IlGdEOG86+tjgw==, figureFileBig=k4MrFVLS/XzDwSr+ZEAhug==, tableContent=null), ArticleFig(id=1322164564460946021, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164548216406567, language=EN, label=Fig.7, caption=
Effect of brow line damage scale on recovery ratio of ore, figureFileSmall=PmO/FgP243jR0eAPjwcydg==, figureFileBig=uHUVf2O0/Dtx2KkyHmVqxQ==, tableContent=null), ArticleFig(id=1322164564561609318, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164548216406567, language=CN, label=图7, caption=
眉线破坏尺度对矿石回收率的影响, figureFileSmall=PmO/FgP243jR0eAPjwcydg==, figureFileBig=uHUVf2O0/Dtx2KkyHmVqxQ==, tableContent=null), ArticleFig(id=1322164564649689703, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164548216406567, language=EN, label=Table 1, caption=
Particle grading composition
, figureFileSmall=null, figureFileBig=null, tableContent=
| 散体类型 | 不同粒径颗粒占比/% |
|---|
| 0~4 mm | 4~8 mm | 8~12 mm | 12~16 mm | 16~20 mm |
|---|
| 矿石 | 50 | 30 | 15 | 5 | 0 |
| 废石 | 20 | 30 | 40 | 5 | 5 |
), ArticleFig(id=1322164564733575784, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322164548216406567, language=CN, label=表1, caption=
颗粒级配组成
, figureFileSmall=null, figureFileBig=null, tableContent=
| 散体类型 | 不同粒径颗粒占比/% |
|---|
| 0~4 mm | 4~8 mm | 8~12 mm | 12~16 mm | 16~20 mm |
|---|
| 矿石 | 50 | 30 | 15 | 5 | 0 |
| 废石 | 20 | 30 | 40 | 5 | 5 |
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