Article(id=1241769331659440463, tenantId=1146029695717560320, journalId=1240670690148397066, issueId=1241769329201578292, articleNumber=null, orderNo=null, doi=10.3963/j.issn.1001-487X.2024.01.009, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1667836800000, receivedDateStr=2022-11-08, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1773990479626, onlineDateStr=2026-03-20, pubDate=1709222400000, pubDateStr=2024-03-01, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1773990479626, onlineIssueDateStr=2026-03-20, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1773990479626, creator=13701087609, updateTime=1773990479626, updator=13701087609, issue=Issue{id=1241769329201578292, tenantId=1146029695717560320, journalId=1240670690148397066, year='2024', volume='41', issue='1', pageStart='1', pageEnd='220', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1773990479040, creator=13701087609, updateTime=1773992264087, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1241776816298459159, tenantId=1146029695717560320, journalId=1240670690148397066, issueId=1241769329201578292, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1241776816298459160, tenantId=1146029695717560320, journalId=1240670690148397066, issueId=1241769329201578292, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=60, endPage=66, ext={EN=ArticleExt(id=1241769332426998123, articleId=1241769331659440463, tenantId=1146029695717560320, journalId=1240670690148397066, language=EN, title=Optimization Study by Zhongkai Mining on Charge Structure of Large-diameter and Deep-hole Blasting, columnId=1240702072862069231, journalTitle=Blasting, columnName=BLASTING IN ORE AND ROCK, runingTitle=null, highlight=null, articleAbstract=
Charge structure has an important impact on deep hole blasting effect with a large diameter in thick and large ore bodies. The current charge structure (24.2% air deck length) used in Bangzhong mine of Zhongkai Mining has a serious problem of post-blast impact damage, resulting in blockage, collapse or even scrapping of the latter row of holes, which seriously affects productivity. However, blindly increasing the air deck length ratio has the risk of increasing the boulder yield. Based on the actual explosives and rock parameters of the mine, a study on charging structure optimization was carried out by using the numerical simulation software LSDYNA. The commonly used air spacers were selected as the deck materials. Then, 12 charging structure solutions were designed for numerical simulation with respect to the air deck length ratio, and the relationships between the charging structure and the evaluation indexes (such as the back impact effect, boulder yield, peak particle velocity of free surface and peak effective stress) were obtained. The results show that the peak particle velocity of the free surface and the peak effective stress gradually decrease with the increase of the air deck length ratio. The back impact effect is obvious and the back row of holes may collapse when the air deck length ratio is less than or equal to 30.5%. There is a risk that the boulder yield increases when the air deck length ratio is greater than or equal to 45.3%. The optimal air deck length ratio is 44.2%. The deep hole blasting tests show that the boulder yield of the optimized charge structure is 7.1%, and the back impact effect has been effectively controlled.
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SONG Jing-yi (2000-), male, Ph. D, candidate of Northeastern University, engaged in engineering blasting research, (E-mail)
2637581519@qq.com.
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装药结构对厚大矿体大直径深孔爆破落矿效果具有重要影响。中凯矿业帮中矿区现行装药结构(空气间隔长度比例24.2%)存在爆破后冲破坏作用严重的问题,造成后一排炮孔堵塞、坍塌甚至报废,严重影响生产效率;而盲目增大空气间隔长度比例则存在爆破大块率增加的风险。以矿山实际的炸药和岩石参数为基础,采用数值模拟软件LSDYNA开展大直径深孔爆破落矿装药结构优化研究。选择常用空气间隔器作为间隔材料,以空气间隔长度比例为研究对象设计了12种装药结构方案进行数值模拟,得到了装药结构与爆破后冲作用、大块率、自由面质点振动峰值速度以及峰值有效应力等评价指标之间的关系。结果表明:自由面质点振动峰值速度以及峰值有效应力随空气间隔长度比例增加逐渐下降;当空气间隔长度比例小于等于30.5%时后冲作用明显,后排炮孔可能出现塌孔现象,当空气间隔长度比例大于等于45.3%时,存在大块率增加的风险,最优装药结构的空气间隔长度比例为44.2%。现场深孔爆破落矿试验表明,优化的装药结构爆破后大块率为7.1%且爆破后冲作用得到有效控制。
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赵兴东(1975-),男,博士,东北大学采矿工程系教授、博士生导师,从事深部金属矿采动灾害防控研究,(E-mail)zhaoxingdong@mail.neu.edu.cn。
ZHAO Xing-dong (1975-), male, Ph. D., professor and doctoral supervisor of the Department of Mining Engineering, Northeastern University, mainly engaged in the research on the prevention and control of mining disasters in deep metal mines, (E-mail) zhaoxingdong@mail.neu.edu.cn.
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1.Labrotary of Safe Mining in Deep Metal Mine, Northeastern University, Shenyang 110816, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1241769340572336817, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241769331659440463, authorId=1241769340203238035, language=CN, stringName=赵兴东, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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赵兴东(1975-),男,博士,东北大学采矿工程系教授、博士生导师,从事深部金属矿采动灾害防控研究,(E-mail)zhaoxingdong@mail.neu.edu.cn。
ZHAO Xing-dong (1975-), male, Ph. D., professor and doctoral supervisor of the Department of Mining Engineering, Northeastern University, mainly engaged in the research on the prevention and control of mining disasters in deep metal mines, (E-mail) zhaoxingdong@mail.neu.edu.cn.
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赵兴东(1975-),男,博士,东北大学采矿工程系教授、博士生导师,从事深部金属矿采动灾害防控研究,(E-mail)zhaoxingdong@mail.neu.edu.cn。
ZHAO Xing-dong (1975-), male, Ph. D., professor and doctoral supervisor of the Department of Mining Engineering, Northeastern University, mainly engaged in the research on the prevention and control of mining disasters in deep metal mines, (E-mail) zhaoxingdong@mail.neu.edu.cn.
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Schematic diagram of open stope with subsequent filling mining method (unit: m), figureFileSmall=Uup9senbA9CZticRdzqfqg==, figureFileBig=XxaKrbdq5J8V50qOQWdAeg==, tableContent=null), ArticleFig(id=1241769344494011282, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241769331659440463, language=CN, label=图1, caption=
阶段空场嗣后充填采矿法示意图(单位:m), figureFileSmall=Uup9senbA9CZticRdzqfqg==, figureFileBig=XxaKrbdq5J8V50qOQWdAeg==, tableContent=null), ArticleFig(id=1241769344787612582, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241769331659440463, language=EN, label=Fig. 2, caption=
Schematic diagram of air decking charging structure (unit: cm), figureFileSmall=TWgqgjR2fRu9aY0ycuIaBw==, figureFileBig=sJzfiIsGzVIZsDd7I0fHZQ==, tableContent=null), ArticleFig(id=1241769344884081577, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241769331659440463, language=CN, label=图2, caption=
空气间隔装药结构示意图(单位:cm), figureFileSmall=TWgqgjR2fRu9aY0ycuIaBw==, figureFileBig=sJzfiIsGzVIZsDd7I0fHZQ==, tableContent=null), ArticleFig(id=1241769344963773361, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241769331659440463, language=EN, label=Fig. 3, caption=
Numerical model of charge structure, figureFileSmall=3+QfKhpmtutov0eL2j2qLw==, figureFileBig=KWMldaGt3yY+Sv8mr0OgIw==, tableContent=null), ArticleFig(id=1241769345077019576, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241769331659440463, language=CN, label=图3, caption=
装药结构数值模型, figureFileSmall=3+QfKhpmtutov0eL2j2qLw==, figureFileBig=KWMldaGt3yY+Sv8mr0OgIw==, tableContent=null), ArticleFig(id=1241769345211237313, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241769331659440463, language=EN, label=Fig. 4, caption=
Numerical simulation damage cloud map of blasting in Scheme 4, figureFileSmall=8HRKwkBSL7IfMwOdG8AXmQ==, figureFileBig=wFKvybmPaK5CVUutilu11A==, tableContent=null), ArticleFig(id=1241769345404175307, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241769331659440463, language=CN, label=图4, caption=
方案4爆破数值模拟损伤云图, figureFileSmall=8HRKwkBSL7IfMwOdG8AXmQ==, figureFileBig=wFKvybmPaK5CVUutilu11A==, tableContent=null), ArticleFig(id=1241769345525810131, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241769331659440463, language=EN, label=Fig. 5, caption=
Final damage cloud map of blasting numerical simulation for each scheme (t=6 ms), figureFileSmall=b3iu+p9OxcjBISnQAgfgKg==, figureFileBig=udp1aMGYDwQg6dKveuviBQ==, tableContent=null), ArticleFig(id=1241769345685193690, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241769331659440463, language=CN, label=图5, caption=
各方案爆破数值模拟最终损伤云图(t=6 ms), figureFileSmall=b3iu+p9OxcjBISnQAgfgKg==, figureFileBig=udp1aMGYDwQg6dKveuviBQ==, tableContent=null), ArticleFig(id=1241769347262251998, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241769331659440463, language=EN, label=Fig. 6, caption=
Peak vibration velocity of monitoring points under different schemes, figureFileSmall=R0+mcOVX7wax5V24YJeSXQ==, figureFileBig=uvCBwKXiH8kdYxA03URrEw==, tableContent=null), ArticleFig(id=1241769347358721001, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241769331659440463, language=CN, label=图6, caption=
不同方案下监测点振动峰值速度, figureFileSmall=R0+mcOVX7wax5V24YJeSXQ==, figureFileBig=uvCBwKXiH8kdYxA03URrEw==, tableContent=null), ArticleFig(id=1241769347430024173, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241769331659440463, language=EN, label=Fig. 7, caption=
Effective stress peak value of monitoring points under different schemes, figureFileSmall=x/qVCLQ2otklHK3o0Div5A==, figureFileBig=kl4cW1usqs89l8JodKtVbQ==, tableContent=null), ArticleFig(id=1241769347581019123, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241769331659440463, language=CN, label=图7, caption=
不同方案下监测点有效应力峰值, figureFileSmall=x/qVCLQ2otklHK3o0Div5A==, figureFileBig=kl4cW1usqs89l8JodKtVbQ==, tableContent=null), ArticleFig(id=1241769347719431167, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241769331659440463, language=EN, label=Fig. 8, caption=
Scanning results of stope morphology in field blasting test, figureFileSmall=04nbEAOmg7w0fxt4upW43g==, figureFileBig=+etpxVxUnitjDHH1fbkiCA==, tableContent=null), ArticleFig(id=1241769347857842184, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241769331659440463, language=CN, label=图8, caption=
现场爆破试验空区形态扫描结果, figureFileSmall=04nbEAOmg7w0fxt4upW43g==, figureFileBig=+etpxVxUnitjDHH1fbkiCA==, tableContent=null), ArticleFig(id=1241769347987865617, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241769331659440463, language=EN, label=Table 1, caption=
Proportion of air deck length for different charging structure schemes
, figureFileSmall=null, figureFileBig=null, tableContent=
| 方案编号 | 方案1 | 方案2 | 方案3 | 方案4 | 方案5 | 方案6 | 方案7 | 方案8 | 方案9 | 方案10 | 方案11 | 方案12 |
|---|
| 空气间隔长度比例/% | 18.9 | 30.5 | 38.9 | 44.2 | 45.3 | 47.4 | 24.2 | 36.8 | 46.3 | 51.6 | 53.7 | 55.8 |
), ArticleFig(id=1241769348122083354, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241769331659440463, language=CN, label=表1, caption=
不同装药结构方案的空气间隔长度比例
, figureFileSmall=null, figureFileBig=null, tableContent=
| 方案编号 | 方案1 | 方案2 | 方案3 | 方案4 | 方案5 | 方案6 | 方案7 | 方案8 | 方案9 | 方案10 | 方案11 | 方案12 |
|---|
| 空气间隔长度比例/% | 18.9 | 30.5 | 38.9 | 44.2 | 45.3 | 47.4 | 24.2 | 36.8 | 46.3 | 51.6 | 53.7 | 55.8 |
), ArticleFig(id=1241769348264689698, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241769331659440463, language=EN, label=Table 2, caption=
Rock RHT model parameters
, figureFileSmall=null, figureFileBig=null, tableContent=
| ρ0/(kg·m-3) | fc/MPa | EPSF | B0 | B1 | α0 | G/GPa | T1/GPa | T2/GPa |
| 4080 | 121.37 | 2 | 1.68 | 1.68 | 1.0 | 18.81 | 53.64 | 0 |
| Pcrush/MPa | N | Plock/GPa |  | A1/GPa | A2/GPa | A3/GPa |  | Q0 |
| 40.51 | 0.74 | 6 | 0.26 | 53.64 | 90.12 | 55.08 | 0.06 | 0.68 |
| EOC/s-1 | EOT/s-1 | EC/s-1 | ET/s-1 | βc | βt | PTF |  |  |
| 3.0E-5 | 3.0E-6 | 3.0E25 | 3.0E25 | 0.0104 | 0.0142 | 0.001 | 0.4 | 0.7 |
| D1 | D2 | EPM | Af | Nf | XI | Np | A | B |
| 0.04 | 1 | 0.01 | 1.6 | 0.61 | 0.5 | 3 | 2.47 | 0.05 |
), ArticleFig(id=1241769348373741609, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241769331659440463, language=CN, label=表2, caption=
岩石RHT模型参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| ρ0/(kg·m-3) | fc/MPa | EPSF | B0 | B1 | α0 | G/GPa | T1/GPa | T2/GPa |
| 4080 | 121.37 | 2 | 1.68 | 1.68 | 1.0 | 18.81 | 53.64 | 0 |
| Pcrush/MPa | N | Plock/GPa |  | A1/GPa | A2/GPa | A3/GPa |  | Q0 |
| 40.51 | 0.74 | 6 | 0.26 | 53.64 | 90.12 | 55.08 | 0.06 | 0.68 |
| EOC/s-1 | EOT/s-1 | EC/s-1 | ET/s-1 | βc | βt | PTF |  |  |
| 3.0E-5 | 3.0E-6 | 3.0E25 | 3.0E25 | 0.0104 | 0.0142 | 0.001 | 0.4 | 0.7 |
| D1 | D2 | EPM | Af | Nf | XI | Np | A | B |
| 0.04 | 1 | 0.01 | 1.6 | 0.61 | 0.5 | 3 | 2.47 | 0.05 |
), ArticleFig(id=1241769348520542257, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241769331659440463, language=EN, label=Table 3, caption=
Parameters of 2#rock emulsion explosive
, figureFileSmall=null, figureFileBig=null, tableContent=
| 密度/(kg·m-3) | 爆速/(m·s-1) | PCJ/GPa | A/GPa | B/GPa | R1 | R2 | ω | E0/GPa |
|---|
| 1.18×103 | 4.2×103 | 9.55 | 293.9 | 21.73 | 6.366 | 2.152 | 0.207 | 3.14 |
), ArticleFig(id=1241769348629594171, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241769331659440463, language=CN, label=表3, caption=
2#岩石乳化炸药参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 密度/(kg·m-3) | 爆速/(m·s-1) | PCJ/GPa | A/GPa | B/GPa | R1 | R2 | ω | E0/GPa |
|---|
| 1.18×103 | 4.2×103 | 9.55 | 293.9 | 21.73 | 6.366 | 2.152 | 0.207 | 3.14 |
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