Article(id=1236276107108995190, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1236276104999268557, articleNumber=null, orderNo=null, doi=10.3969/j.issn.0253-6099.2025.04.006, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1742659200000, receivedDateStr=2025-03-23, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1772680792834, onlineDateStr=2026-03-05, pubDate=1753977600000, pubDateStr=2025-08-01, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1772680792834, onlineIssueDateStr=2026-03-05, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1772680792834, creator=13701087609, updateTime=1772680792834, updator=13701087609, issue=Issue{id=1236276104999268557, tenantId=1146029695717560320, journalId=1235980550691926019, year='2025', volume='45', issue='4', pageStart='1', pageEnd='200', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1772680792331, creator=13701087609, updateTime=1772681498687, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1236279067746562719, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1236276104999268557, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1236279067746562720, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1236276104999268557, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=33, endPage=40, ext={EN=ArticleExt(id=1236276107809443963, articleId=1236276107108995190, tenantId=1146029695717560320, journalId=1235980550691926019, language=EN, title=Reasonable Drift Spacing for Eastern Stopes of Jinshandian Iron Mine Considering Influence of Moisture Content on Drawn Ore Blocks, columnId=1236276106018484431, journalTitle=Mining and Metallurgical Engineering, columnName=MINING, runingTitle=null, highlight=null, articleAbstract=
To address the problems of poor fluidity and high viscosiy, ore rocks and higher ore losses and dilution due to the influence of moisture content on eastern stopes of Jinshandian Iron Mine, the variation laws of fluidity of ore blocks, shape characteristics of drawn ore blocks, as well as loss and dilution indices of two types of ore bodies in the eastern stopes under influence of different moisture content were analyzed by preforming physical tests and numerical simulation. A reasonable range of drift spacing for the eastern stopes was determined, which was then optimized from the perspectives of safety, technology and economy, based on the improved CRITIC-TOPSIS evaluation method. The results show that with the moisture content in a range of 0-8%, the drawn ore blocks in the eastern stopes are in a shape of an “inverted water drop”, and become shallow as the moisture content increases; with the moisture content in a range of 4%-8%, the natural angle of repose of ore rocks increases with the increase of moisture content, the recovery rates of those two ore bodies are negatively correlated with moisture content, and present an upward trend followed by a decline as the drift spacing becomes wider, while the dilution rate follows the opposite trend. With the moisture content at 6% on average, the optimal drift spacing in the eastern stopes of Jinshandian Iron Mine should be set at 15 m.
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针对金山店铁矿东区采场受含水率影响导致矿岩黏性大、流动性差及矿石损失贫化高的问题,采用物理试验和数值模拟方法,分析东区采场2种矿体在不同含水率条件下的散体流动性能、放出体形态特征和损失贫化指标的变化规律,得到东区采场合理进路间距范围,并基于改进CRITIC-TOPSIS评价方法,从安全、技术及经济角度对合理进路间距进行优选。结果表明:含水率0~8%时,东区采场放出体形态呈“倒水滴”特征,放出体宽度随着含水率增大而减小;含水率4%~8%时,矿石自然安息角随着含水率增大而递增,2种矿体的回收率与含水率呈负相关,并随着进路间距增加呈现先增大后减小的趋势,贫化率则相反;平均含水率6%条件下,金山店铁矿东区采场最优进路间距为15 m。
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武忠英(1998—),男,辽宁葫芦岛人,硕士研究生,主要从事金属矿床地下开采方面的研究。E-mail:wuzhongying@wust.edu.cn
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武忠英(1998—),男,辽宁葫芦岛人,硕士研究生,主要从事金属矿床地下开采方面的研究。E-mail:wuzhongying@wust.edu.cn
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3.武钢资源集团金山店矿业有限公司,湖北 黄石 435116)])], figs=[ArticleFig(id=1236348231987286573, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276107108995190, language=EN, label=Fig.1, caption=
Sketch map of measuring natural response angle, figureFileSmall=/YQ6asC1jyyfeqGqkmQNbA==, figureFileBig=4Em7FKMvw1+lrovFU0N2kg==, tableContent=null), ArticleFig(id=1236348232083755569, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276107108995190, language=CN, label=图1, caption=
自然安息角测定示意图, figureFileSmall=/YQ6asC1jyyfeqGqkmQNbA==, figureFileBig=4Em7FKMvw1+lrovFU0N2kg==, tableContent=null), ArticleFig(id=1236348232184418871, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276107108995190, language=EN, label=Fig.2, caption=
Some ore-drawing test results, figureFileSmall=35sSuNTVL4RxWzzCLZIibA==, figureFileBig=T42KA4G6UPVXZAwi4ZcZTw==, tableContent=null), ArticleFig(id=1236348232289276477, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276107108995190, language=CN, label=图2, caption=
部分放矿试验结果(a)Ⅰ号矿体;(b)Ⅱ号矿体
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Shape of drawn ore blocks from ore bodyⅠ, figureFileSmall=2rSnp1vPnEMUKqe6afVUsQ==, figureFileBig=Eq86M4AQerdQi0n0neoe3Q==, tableContent=null), ArticleFig(id=1236348232478020169, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276107108995190, language=CN, label=图3, caption=
Ⅰ号矿体放出体形态(a)含水率0;(b)含水率6%
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Effect of moisture content on drawn block width, figureFileSmall=ZyRKFQaYME2i1aEOruJ2xQ==, figureFileBig=FOdQzxEBwQTkx/w8fzC/dA==, tableContent=null), ArticleFig(id=1236348232662569554, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276107108995190, language=CN, label=图4, caption=
含水率对放出体宽度的影响, figureFileSmall=ZyRKFQaYME2i1aEOruJ2xQ==, figureFileBig=FOdQzxEBwQTkx/w8fzC/dA==, tableContent=null), ArticleFig(id=1236348232759038551, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276107108995190, language=EN, label=Fig.5, caption=
Effect of moisture content on eccentricity of drawn ore blocks, figureFileSmall=sLlAHSjg056FkL31C+FOsA==, figureFileBig=kT9bCmwofnoWriFtJ2nsog==, tableContent=null), ArticleFig(id=1236348232838730332, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276107108995190, language=CN, label=图5, caption=
含水率对放出体偏心率的影响, figureFileSmall=sLlAHSjg056FkL31C+FOsA==, figureFileBig=kT9bCmwofnoWriFtJ2nsog==, tableContent=null), ArticleFig(id=1236348232918422111, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276107108995190, language=EN, label=Fig.6, caption=
Effect of moisture content on drawn ore mass, figureFileSmall=1FlSAJZzJ4dsYPja3iRM1A==, figureFileBig=fZq13nEz5oafM4lViUytTg==, tableContent=null), ArticleFig(id=1236348233031668328, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276107108995190, language=CN, label=图6, caption=
含水率对放出量的影响, figureFileSmall=1FlSAJZzJ4dsYPja3iRM1A==, figureFileBig=fZq13nEz5oafM4lViUytTg==, tableContent=null), ArticleFig(id=1236348233123943016, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276107108995190, language=EN, label=Fig.7, caption=
Ore drawing model, figureFileSmall=Je++T4frnTxgnBky43fCrg==, figureFileBig=JetiKPV2PG7Q0PmWVHlbFQ==, tableContent=null), ArticleFig(id=1236348233232994922, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276107108995190, language=CN, label=图7, caption=
放矿模型, figureFileSmall=Je++T4frnTxgnBky43fCrg==, figureFileBig=JetiKPV2PG7Q0PmWVHlbFQ==, tableContent=null), ArticleFig(id=1236348233363018352, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276107108995190, language=EN, label=Fig.8, caption=
Ore drawing for two sublevels of ore bodyⅠwith drift spacing of 16 m, figureFileSmall=AOfFW/N4g8bpHI6ZuU/wqA==, figureFileBig=CIEc7YgIo6qW2hpJ83IIGA==, tableContent=null), ArticleFig(id=1236348233509818993, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276107108995190, language=CN, label=图8, caption=
Ⅰ号矿体进路间距16 m两分段放矿结束图(a)含水率6%,第一分段;(b)含水率6%,第二分段;(c)含水率8%,第一分段;(d)含水率8%,第二分段
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Ore loss and dilution indicators for different drift spacing, figureFileSmall=0q26sLfQiS+TLOKNNwk+Rg==, figureFileBig=w6vBFoCXHSdtitr4hus/Uw==, tableContent=null), ArticleFig(id=1236348233665008246, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276107108995190, language=CN, label=图9, caption=
不同进路间距的损失贫化指标(a)Ⅰ号矿体;(b)Ⅱ号矿体
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Particle size distribution of ore rocks in eastern stopes
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| 矿体名称 | 粒径级配占比/% |
|---|
| 0~100 mm | 100~200 mm | 200~300 mm | 300~400 mm | 400~500 mm |
|---|
| Ⅰ号 | 15 | 20 | 30 | 25 | 10 |
| Ⅱ号 | 20 | 28 | 25 | 20 | 7 |
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东区采场矿石粒径级配统计结果
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| 矿体名称 | 粒径级配占比/% |
|---|
| 0~100 mm | 100~200 mm | 200~300 mm | 300~400 mm | 400~500 mm |
|---|
| Ⅰ号 | 15 | 20 | 30 | 25 | 10 |
| Ⅱ号 | 20 | 28 | 25 | 20 | 7 |
), ArticleFig(id=1236348233925055104, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276107108995190, language=EN, label=Table 2, caption=
Moisture content testing results of stope drift at different periods
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| 矿体名称 | 含水率/% |
|---|
| 3月 | 7月 | 12月 | 矿体平均值 | 采场平均值 |
|---|
| Ⅰ号 | 6.56 | 7.84 | 5.13 | 6.51 | 6.23 |
| Ⅱ号 | 5.90 | 7.38 | 4.57 | 5.95 |
), ArticleFig(id=1236348234034107012, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276107108995190, language=CN, label=表2, caption=
采场不同时期进路含水率测定结果
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| 矿体名称 | 含水率/% |
|---|
| 3月 | 7月 | 12月 | 矿体平均值 | 采场平均值 |
|---|
| Ⅰ号 | 6.56 | 7.84 | 5.13 | 6.51 | 6.23 |
| Ⅱ号 | 5.90 | 7.38 | 4.57 | 5.95 |
), ArticleFig(id=1236348234101215880, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276107108995190, language=EN, label=Table 3, caption=
Measurements of natural response angle under different moisture content conditions
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| 含水率/% | 自然安息角/(°) |
|---|
| Ⅰ号矿体 | Ⅱ号矿体 | 平均值 |
|---|
| 4 | 35.12 | 36.13 | 35.62 |
| 6 | 36.59 | 38.89 | 37.74 |
| 8 | 42.78 | 43.27 | 43.03 |
), ArticleFig(id=1236348234185101962, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276107108995190, language=CN, label=表3, caption=
不同含水率条件下自然安息角测定结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 含水率/% | 自然安息角/(°) |
|---|
| Ⅰ号矿体 | Ⅱ号矿体 | 平均值 |
|---|
| 4 | 35.12 | 36.13 | 35.62 |
| 6 | 36.59 | 38.89 | 37.74 |
| 8 | 42.78 | 43.27 | 43.03 |
), ArticleFig(id=1236348234256405133, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276107108995190, language=EN, label=Table 4, caption=
Micro-mechanical parameters of particles and wall
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| 含水率/% | 墙体 | 颗粒 |
|---|
| 法向刚度/(N·m-1) | 切向刚度/(N·m-1) | 摩擦因数 | 法向刚度/(N·m-1) | 切向刚度/(N·m-1) | 摩擦因数 | 抗转动系数 |
|---|
| 4 | 5×108 | 5×108 | 0.7 | 1×108 | 1×108 | 0.5 | 0.25 |
| 6 | 5×108 | 5×108 | 0.7 | 1×108 | 1×108 | 0.7 | 0.40 |
| 8 | 5×108 | 5×108 | 0.7 | 1×108 | 1×108 | 0.7 | 0.60 |
), ArticleFig(id=1236348234331902607, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276107108995190, language=CN, label=表4, caption=
颗粒及墙体细观力学参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 含水率/% | 墙体 | 颗粒 |
|---|
| 法向刚度/(N·m-1) | 切向刚度/(N·m-1) | 摩擦因数 | 法向刚度/(N·m-1) | 切向刚度/(N·m-1) | 摩擦因数 | 抗转动系数 |
|---|
| 4 | 5×108 | 5×108 | 0.7 | 1×108 | 1×108 | 0.5 | 0.25 |
| 6 | 5×108 | 5×108 | 0.7 | 1×108 | 1×108 | 0.7 | 0.40 |
| 8 | 5×108 | 5×108 | 0.7 | 1×108 | 1×108 | 0.7 | 0.60 |
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Blasting effect classification standards
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| 等级 | 描述 | 大块率N/% | 中深孔深度L/m | 炸药单耗M/(kg·t-1) | 分值 |
|---|
| Ⅰ | 效果好,块度均匀 | <10 | <270 | 0.3<M<0.4 | 1~4 |
| Ⅱ | 效果较差,大块率较高 | 10<N<15 | 270<L<285 | 0.2<M<0.3 | 4~7 |
| Ⅲ | 效果差,大块率高 | >15 | >285 | <0.2 | 7~10 |
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爆破效果分级标准
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| 等级 | 描述 | 大块率N/% | 中深孔深度L/m | 炸药单耗M/(kg·t-1) | 分值 |
|---|
| Ⅰ | 效果好,块度均匀 | <10 | <270 | 0.3<M<0.4 | 1~4 |
| Ⅱ | 效果较差,大块率较高 | 10<N<15 | 270<L<285 | 0.2<M<0.3 | 4~7 |
| Ⅲ | 效果差,大块率高 | >15 | >285 | <0.2 | 7~10 |
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Quantifiable indicators of ore bodyⅠ
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| 进路间距/m | C1/(元·t-1) | C2/% | C3/% | C4 | C5/m2 |
|---|
| 14 | 93.80 | 79.66 | 3.85 | 2 | 8 751 |
| 15 | 88.70 | 80.96 | 3.76 | 3 | 8 177 |
| 16 | 86.20 | 80.30 | 3.88 | 6 | 7 675 |
| 17 | 81.40 | 78.59 | 4.33 | 7 | 7 232 |
| 18 | 72.00 | 76.85 | 4.47 | 9 | 6 839 |
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Ⅰ号矿体指标量化数据
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| 进路间距/m | C1/(元·t-1) | C2/% | C3/% | C4 | C5/m2 |
|---|
| 14 | 93.80 | 79.66 | 3.85 | 2 | 8 751 |
| 15 | 88.70 | 80.96 | 3.76 | 3 | 8 177 |
| 16 | 86.20 | 80.30 | 3.88 | 6 | 7 675 |
| 17 | 81.40 | 78.59 | 4.33 | 7 | 7 232 |
| 18 | 72.00 | 76.85 | 4.47 | 9 | 6 839 |
), ArticleFig(id=1236348234961048218, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276107108995190, language=EN, label=Table 7, caption=
Quantifiable indicators of ore bodyⅡ
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| 进路间距/m | C1/(元·t-1) | C2/% | C3/% | C4 | C5/m2 |
|---|
| 14 | 93.80 | 79.83 | 4.20 | 2 | 8 751 |
| 15 | 88.70 | 80.40 | 4.03 | 3 | 8 177 |
| 16 | 86.20 | 79.46 | 4.48 | 5 | 7 675 |
| 17 | 81.40 | 78.08 | 4.61 | 7 | 7 232 |
| 18 | 72.00 | 77.56 | 4.87 | 9 | 6 839 |
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Ⅱ号矿体指标量化数据
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| 进路间距/m | C1/(元·t-1) | C2/% | C3/% | C4 | C5/m2 |
|---|
| 14 | 93.80 | 79.83 | 4.20 | 2 | 8 751 |
| 15 | 88.70 | 80.40 | 4.03 | 3 | 8 177 |
| 16 | 86.20 | 79.46 | 4.48 | 5 | 7 675 |
| 17 | 81.40 | 78.08 | 4.61 | 7 | 7 232 |
| 18 | 72.00 | 77.56 | 4.87 | 9 | 6 839 |
), ArticleFig(id=1236348235116237470, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276107108995190, language=EN, label=Table 8, caption=
Objective weights in CRITIC method for two ore bodies
, figureFileSmall=null, figureFileBig=null, tableContent=
| 矿体名称 | 指标权重/% |
|---|
| C1 | C2 | C3 | C4 | C5 |
|---|
| Ⅰ号 | 17.60 | 31.02 | 19.94 | 16.22 | 15.22 |
| Ⅱ号 | 18.23 | 24.85 | 24.37 | 16.79 | 15.76 |
), ArticleFig(id=1236348235212706464, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276107108995190, language=CN, label=表8, caption=
2种矿体CRITIC客观权重
, figureFileSmall=null, figureFileBig=null, tableContent=
| 矿体名称 | 指标权重/% |
|---|
| C1 | C2 | C3 | C4 | C5 |
|---|
| Ⅰ号 | 17.60 | 31.02 | 19.94 | 16.22 | 15.22 |
| Ⅱ号 | 18.23 | 24.85 | 24.37 | 16.79 | 15.76 |
), ArticleFig(id=1236348235288203938, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276107108995190, language=EN, label=Table 9, caption=
TOPSIS evaluation results of two ore bodies
, figureFileSmall=null, figureFileBig=null, tableContent=
| 进路间距/m | Ⅰ号矿体 | Ⅱ号矿体 |
|---|
| 评分 | 排序 | 评分 | 排序 |
|---|
| 14 | 74.56 | 3 | 77.25 | 2 |
| 15 | 100.00 | 1 | 100.00 | 1 |
| 16 | 87.37 | 2 | 69.36 | 3 |
| 17 | 59.55 | 4 | 54.78 | 4 |
| 18 | 44.62 | 5 | 46.80 | 5 |
), ArticleFig(id=1236348235359507106, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276107108995190, language=CN, label=表9, caption=
2种矿体TOPSIS评价结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 进路间距/m | Ⅰ号矿体 | Ⅱ号矿体 |
|---|
| 评分 | 排序 | 评分 | 排序 |
|---|
| 14 | 74.56 | 3 | 77.25 | 2 |
| 15 | 100.00 | 1 | 100.00 | 1 |
| 16 | 87.37 | 2 | 69.36 | 3 |
| 17 | 59.55 | 4 | 54.78 | 4 |
| 18 | 44.62 | 5 | 46.80 | 5 |
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