Article(id=1241409513094435147, tenantId=1146029695717560320, journalId=1240670690148397066, issueId=1241409507583127593, articleNumber=null, orderNo=null, doi=10.3963/j.issn.1001-487X.2024.04.010, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1716220800000, receivedDateStr=2024-05-21, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1773904692195, onlineDateStr=2026-03-19, pubDate=1732982400000, pubDateStr=2024-12-01, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1773904692195, onlineIssueDateStr=2026-03-19, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1773904692195, creator=13701087609, updateTime=1773904692195, updator=13701087609, issue=Issue{id=1241409507583127593, tenantId=1146029695717560320, journalId=1240670690148397066, year='2024', volume='41', issue='4', pageStart='1', pageEnd='204', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1773904690881, creator=13701087609, updateTime=1773904736091, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1241409697262137710, tenantId=1146029695717560320, journalId=1240670690148397066, issueId=1241409507583127593, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1241409697262137711, tenantId=1146029695717560320, journalId=1240670690148397066, issueId=1241409507583127593, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=84, endPage=90, ext={EN=ArticleExt(id=1241409515124478293, articleId=1241409513094435147, tenantId=1146029695717560320, journalId=1240670690148397066, language=EN, title=Bench Blasting Parameters Optimization with Air-decked Charge Structure based on Fragmentation Control, columnId=1240702072862069231, journalTitle=Blasting, columnName=BLASTING IN ORE AND ROCK, runingTitle=null, highlight=null, articleAbstract=
This study presents a comprehensive approach to solve the problem of low ore recovery caused by the difficulty in separating small-particle size ore from soil after blasting in a limestone building stone mine. Firstly, a correlation model between blasting fragmentation and dynamic damage of rock mass was established based on field measurement data and numerical simulation results, which can determine dynamic damage thresholds corresponding to various rock particle sizes. Secondly, the numerical simulation test of bench blasting in a three-dimensional fractured rock mass was carried out by using different air-decked charging stages and borehole distribution parameters, which can improve the particle size yield of 0.3~0.9 m and control the bulk ratio to obtain the best blasting parameters. Finally, the field blasting tests were conducted to optimize the charge structure and borehole distribution parameters based on numerical simulation results. The results show a negative exponential function relationship between the blasting block size and the dynamic damage value of the limestone. Specifically, the dynamic damage thresholds corresponding to the blasting size of 0.3 m and 0.9 m are 0.793 and 0.286, respectively. Using only an air-decked charging structure alone can increase the particle size ratio of 0.3~0.9 m and significantly raise the bulk rate. Conversely, combining an air-decked charging structure with a reduced hole spacing markedly enhances the particle size ratio of 0.3~0.9 m while maintaining a stable bulk rate. Optimal blasting results are achieved using a two-stage air interval charging structure and a strategic reduction in hole distribution parameters. The field application results show a 20.09 percentage point increase in the 0.3~0.9 m particle size ratio, with the bulk rate remaining virtually unchanged. Additionally, the unit consumption of explosives decreased by 10.29%.
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LEI Tao (1983-), male Ph. D, lecturer, mainly engaged in mining, safety, numerical mining and other aspects of teaching and research, (E-mail)
leitao539@163.com.
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为解决某灰岩建筑石料矿山爆破后小粒径矿石难以与土分离而导致矿石回收率低下的问题,首先基于现场实测数据和数值模拟结果,构建爆破块度与岩体动力损伤关联模型,确定不同岩块粒径对应的动力损伤阈值;其次选用不同空气间隔装药段数和孔网参数开展三维裂隙岩体台阶爆破数值模拟试验,以提高0.3~0.9 m矿石粒径产率为目的,兼顾控制大块率,获取最佳爆破参数;最后,在数值模拟结果的基础上,开展现场爆破试验,优化装药结构和孔网参数。结果表明:灰岩爆破块度尺寸与动力损伤值之间存在负指数函数关系,爆破块度尺寸0.3 m和0.9 m所对应的岩体动力损伤阈值分别为0.793和0.286;仅采用空气间隔装药结构可提高0.3~0.9 m粒径占比,但大块率增幅较大;采用空气间隔装药结构、适当缩小孔网参数可显著提升0.3~0.9 m粒径占比,同时大块率几乎不变;其中采用二段空气间隔装药结构、适当缩小孔网参数,爆破效果最优。矿山现场应用结果表明,0.3~0.9 m矿石粒径占比提高了20.09个百分点,大块率基本不变,炸药单耗降低10.29%。
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叶海旺(1971-),男,博士、教授,主要从事采矿、爆破、安全等方面的教学和科研工作,(E-mail)yehaiwang369@hotmail.com。
YE Hai-wang (1971-), male, Ph. D, professor, mainly engaged in mining, blasting, safety and other aspects of teaching and research work, (E-mail) yehaiwang@sina.com.
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1a, 1b, 1c, address=
1a.School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China
1b.Ministry of Education Key Laboratory of Key Non-metallic Mineral Resources Green Utilization, Wuhan University of Technology, Wuhan 430070, China
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1a.武汉理工大学 资源与环境工程学院,武汉 430070
1b.武汉理工大学 关键非金属矿产资源绿色利用教育部重点实验室,武汉 430070
1c.武汉理工大学 矿物资源加工与环境湖北省重点实验室,武汉 430070, bio={"content":"
叶海旺(1971-),男,博士、教授,主要从事采矿、爆破、安全等方面的教学和科研工作,(E-mail)yehaiwang369@hotmail.com。
YE Hai-wang (1971-), male, Ph. D, professor, mainly engaged in mining, blasting, safety and other aspects of teaching and research work, (E-mail) yehaiwang@sina.com.
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叶海旺(1971-),男,博士、教授,主要从事采矿、爆破、安全等方面的教学和科研工作,(E-mail)yehaiwang369@hotmail.com。
YE Hai-wang (1971-), male, Ph. D, professor, mainly engaged in mining, blasting, safety and other aspects of teaching and research work, (E-mail) yehaiwang@sina.com.
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2.Chuzhou Langyashan Mining Engineering Technology Co., Ltd., Chuzhou 239000, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1241409529208951472, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409513094435147, authorId=1241409528890184349, language=CN, stringName=刘聪, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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2.滁州琅琊山矿业工程技术有限公司,滁州 239000, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1241409526251967064, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409513094435147, xref=2., ext=[AuthorCompanyExt(id=1241409526256161370, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409513094435147, companyId=1241409526251967064, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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1a.School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China
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1a.武汉理工大学 资源与环境工程学院,武汉 430070
1b.武汉理工大学 关键非金属矿产资源绿色利用教育部重点实验室,武汉 430070
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39(1): 43-50. (in Chinese), articleTitle=Numerical simulation and experimental study on air deck stemming of blasting, refAbstract=null)], funds=[Fund(id=1241409542089658556, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409513094435147, awardId=2020YFC1909602, language=EN, fundingSource=National key research and development plan project(2020YFC1909602), fundOrder=null, country=null), Fund(id=1241409542274207938, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409513094435147, awardId=2020YFC1909602, language=CN, fundingSource=国家重点研发计划项目(2020YFC1909602), fundOrder=null, country=null), Fund(id=1241409542404231369, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409513094435147, awardId=2021BCA152, language=EN, fundingSource=Hubei Province key research and development project(2021BCA152), fundOrder=null, country=null), Fund(id=1241409542530060496, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409513094435147, awardId=2021BCA152, language=CN, fundingSource=湖北省重点研发计划项目(2021BCA152), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1241409525689930292, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409513094435147, xref=1a., ext=[AuthorCompanyExt(id=1241409525698318901, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409513094435147, companyId=1241409525689930292, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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Mine production status, figureFileSmall=xCSum8vAVEvNAEK0YSkScA==, figureFileBig=V4Q6wb/kEJF092s9cB9TOw==, tableContent=null), ArticleFig(id=1241409533910766519, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409513094435147, language=CN, label=图1, caption=
矿山生产现状, figureFileSmall=xCSum8vAVEvNAEK0YSkScA==, figureFileBig=V4Q6wb/kEJF092s9cB9TOw==, tableContent=null), ArticleFig(id=1241409534225339334, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409513094435147, language=EN, label=Fig. 2, caption=
Bench face of the test area, figureFileSmall=weqrLbTEzDWAp5aySha+AQ==, figureFileBig=1nLzOMqKHkED2M2tw/OQSQ==, tableContent=null), ArticleFig(id=1241409534313419727, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409513094435147, language=CN, label=图2, caption=
试验区域台阶坡面, figureFileSmall=weqrLbTEzDWAp5aySha+AQ==, figureFileBig=1nLzOMqKHkED2M2tw/OQSQ==, tableContent=null), ArticleFig(id=1241409534489580501, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409513094435147, language=EN, label=Fig. 3, caption=
The numerical model of bench blasting with fracture (unit: m), figureFileSmall=/nFAcLJoBApLTtDBnr9MGQ==, figureFileBig=QiBYS1GOrublwl1q94L3Qg==, tableContent=null), ArticleFig(id=1241409534590243805, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409513094435147, language=CN, label=图3, caption=
含裂隙岩体台阶爆破数值模型(单位:m), figureFileSmall=/nFAcLJoBApLTtDBnr9MGQ==, figureFileBig=QiBYS1GOrublwl1q94L3Qg==, tableContent=null), ArticleFig(id=1241409534716072929, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409513094435147, language=EN, label=Fig. 4, caption=
Damage cloud map of bench blasting, figureFileSmall=UfhH8zVarLtUT8eqGw9F5g==, figureFileBig=8CqyBSpT+jMOn24YY0ILcA==, tableContent=null), ArticleFig(id=1241409534862873578, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409513094435147, language=CN, label=图4, caption=
台阶爆破损伤云图, figureFileSmall=UfhH8zVarLtUT8eqGw9F5g==, figureFileBig=8CqyBSpT+jMOn24YY0ILcA==, tableContent=null), ArticleFig(id=1241409535076783087, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409513094435147, language=EN, label=Fig. 5, caption=
The blast pile in the field test area, figureFileSmall=38kTSCRQWRQ4Q13EabB8fw==, figureFileBig=H5TK53kYJBVcseF9SpClYQ==, tableContent=null), ArticleFig(id=1241409535211000823, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409513094435147, language=CN, label=图5, caption=
现场试验区域爆堆, figureFileSmall=38kTSCRQWRQ4Q13EabB8fw==, figureFileBig=H5TK53kYJBVcseF9SpClYQ==, tableContent=null), ArticleFig(id=1241409535361995770, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409513094435147, language=EN, label=Fig. 6, caption=
Cumulative curves comparison of on-site fragment distribution and numerical simulation damage volume, figureFileSmall=pghZ5c4x5csZz462XdH2oQ==, figureFileBig=1mEaA3xWWQmuZMCL/ysvFg==, tableContent=null), ArticleFig(id=1241409535487824898, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409513094435147, language=CN, label=图6, caption=
现场块度分布与数值模拟损伤体积累计曲线对比, figureFileSmall=pghZ5c4x5csZz462XdH2oQ==, figureFileBig=1mEaA3xWWQmuZMCL/ysvFg==, tableContent=null), ArticleFig(id=1241409535668178952, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409513094435147, language=EN, label=Fig. 7, caption=
Damage cloud map of blasting numerical model with different schemes, figureFileSmall=P2zbMT5gCOwW6os3wLlS8g==, figureFileBig=Ohqt6TNso5zCz7If+zBFFA==, tableContent=null), ArticleFig(id=1241409535802396690, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409513094435147, language=CN, label=图7, caption=
不同方案的爆破数值模型损伤云图, figureFileSmall=P2zbMT5gCOwW6os3wLlS8g==, figureFileBig=Ohqt6TNso5zCz7If+zBFFA==, tableContent=null), ArticleFig(id=1241409537471729689, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409513094435147, language=EN, label=Fig. 8, caption=
The volume proportion of each particle size after blasting with different schemes, figureFileSmall=Jnom8WLWGxlg08LckwtABQ==, figureFileBig=HFVAClVE8wu3nVM1rsjkGw==, tableContent=null), ArticleFig(id=1241409537631113251, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409513094435147, language=CN, label=图8, caption=
不同方案爆破后各区间粒径体积占比, figureFileSmall=Jnom8WLWGxlg08LckwtABQ==, figureFileBig=HFVAClVE8wu3nVM1rsjkGw==, tableContent=null), ArticleFig(id=1241409537735970857, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409513094435147, language=EN, label=Fig. 9, caption=
Bench slope and charge structure of field test (unit: m), figureFileSmall=FkzZjUYMCWH4VxgcdTCOKQ==, figureFileBig=ItyQgsLXgPiI66s77NjfQA==, tableContent=null), ArticleFig(id=1241409537966657590, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409513094435147, language=CN, label=图9, caption=
现场试验台阶边坡及装药结构(单位:m), figureFileSmall=FkzZjUYMCWH4VxgcdTCOKQ==, figureFileBig=ItyQgsLXgPiI66s77NjfQA==, tableContent=null), ArticleFig(id=1241409538167984188, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409513094435147, language=EN, label=Fig. 10, caption=
Blasting effect comparison before and after optimization, figureFileSmall=7WE6QQeXYfXON9g19O4eMA==, figureFileBig=QA5OMfB8mccTMlfr6h7rBg==, tableContent=null), ArticleFig(id=1241409538277036101, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409513094435147, language=CN, label=图10, caption=
优化前后爆破效果对比, figureFileSmall=7WE6QQeXYfXON9g19O4eMA==, figureFileBig=QA5OMfB8mccTMlfr6h7rBg==, tableContent=null), ArticleFig(id=1241409538348339272, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409513094435147, language=EN, label=Table 1, caption=
Basic physical and mechanical parameters of ore
, figureFileSmall=null, figureFileBig=null, tableContent=
| 密度/(kg·m-3) | 泊松比 | 单轴抗压强度/MPa | 抗拉强度/MPa | 弹性模量/GPa | 内摩擦角/° | 粘聚力/MPa |
|---|
| 2700 | 0.25 | 79.90 | 11.64 | 69.5 | 42 | 13 |
), ArticleFig(id=1241409538457391183, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409513094435147, language=CN, label=表1, caption=
矿石基本物理力学参数
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| 密度/(kg·m-3) | 泊松比 | 单轴抗压强度/MPa | 抗拉强度/MPa | 弹性模量/GPa | 内摩擦角/° | 粘聚力/MPa |
|---|
| 2700 | 0.25 | 79.90 | 11.64 | 69.5 | 42 | 13 |
), ArticleFig(id=1241409538608386137, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409513094435147, language=EN, label=Table 2, caption=
Open-pit bench blasting parameters
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| 钻孔参数 |
| 钻孔形式 | 炮孔直径d/mm | 炮孔长度l/m | 超深lc/m | 堵塞长度ld/m | 孔距a/m | 排距b/m |
| 垂直炮孔 | 115 | 17.0 | 2 | 3.5 | 7 | 3.5 |
| 台阶参数 | 装药参数 | 起爆参数 |
| 台阶高度H/m | 坡面角α/°台阶 | 装药形式 | 单孔装药量Q/kg | 炸药单耗q/(kg·t-1) | 孔间延时/ms | 排间延时/ms |
| 15.0 | 70 | 连续耦合装药 | 125 | 0.126 | 35 | 95 |
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露天台阶爆破参数
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| 钻孔参数 |
| 钻孔形式 | 炮孔直径d/mm | 炮孔长度l/m | 超深lc/m | 堵塞长度ld/m | 孔距a/m | 排距b/m |
| 垂直炮孔 | 115 | 17.0 | 2 | 3.5 | 7 | 3.5 |
| 台阶参数 | 装药参数 | 起爆参数 |
| 台阶高度H/m | 坡面角α/°台阶 | 装药形式 | 单孔装药量Q/kg | 炸药单耗q/(kg·t-1) | 孔间延时/ms | 排间延时/ms |
| 15.0 | 70 | 连续耦合装药 | 125 | 0.126 | 35 | 95 |
), ArticleFig(id=1241409538830684255, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409513094435147, language=EN, label=Table 3, caption=
Material constitutive model and state equation parameters
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| 材料 | 本构模型 | 参数取值 |
| 岩石 | RHT | ρ0/(kg·m-3) 2700 | fc/MPa 79.90 | G/GPa 27.77 |  0.05 |  0.02 | βc 0.01 | βt 0.02 | |
| 炸药 | MAT_HIGH_EXPLOSIVE_BURN | ρz/(kg·m-3) 1060 | D/(m·s-1) 3900 | A/GPa 49.4 | B/GPa 1.89 | R1 3.9 | R2 1.11 | ω 0.33 | E0 e/GPa 2.84 |
| 节理裂隙 | MAT_PLASTIC_KINEMATIC | ρj/(kg·m-3) 1800 | E0/GPa 28 | μ 0.241 | σ/GPa 0.25 | β 0.5 | Etan/MPa 0.025 | | |
), ArticleFig(id=1241409538985873508, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409513094435147, language=CN, label=表3, caption=
材料本构模型及状态方程参数
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| 材料 | 本构模型 | 参数取值 |
| 岩石 | RHT | ρ0/(kg·m-3) 2700 | fc/MPa 79.90 | G/GPa 27.77 |  0.05 |  0.02 | βc 0.01 | βt 0.02 | |
| 炸药 | MAT_HIGH_EXPLOSIVE_BURN | ρz/(kg·m-3) 1060 | D/(m·s-1) 3900 | A/GPa 49.4 | B/GPa 1.89 | R1 3.9 | R2 1.11 | ω 0.33 | E0 e/GPa 2.84 |
| 节理裂隙 | MAT_PLASTIC_KINEMATIC | ρj/(kg·m-3) 1800 | E0/GPa 28 | μ 0.241 | σ/GPa 0.25 | β 0.5 | Etan/MPa 0.025 | | |
), ArticleFig(id=1241409539153645677, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409513094435147, language=EN, label=Table 4, caption=
The unit volume proportion of different damage intervals in the blasting area of numerical model
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| 损伤区间 | 0~0.1 | 0.1~0.2 | 0.2~0.3 | 0.3~0.4 | 0.4~0.5 |
| 体积占比/% | 24.66 | 16.77 | 12.29 | 13.16 | 10.70 |
| 损伤区间 | 0.5~0.6 | 0.6~0.7 | 0.7~0.8 | 0.8~0.9 | 0.9~1.0 |
| 体积占比/% | 8.28 | 6.40 | 4.35 | 2.14 | 1.25 |
), ArticleFig(id=1241409539262697587, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409513094435147, language=CN, label=表4, caption=
数值模型爆破区域不同损伤区间单元体积占比
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| 损伤区间 | 0~0.1 | 0.1~0.2 | 0.2~0.3 | 0.3~0.4 | 0.4~0.5 |
| 体积占比/% | 24.66 | 16.77 | 12.29 | 13.16 | 10.70 |
| 损伤区间 | 0.5~0.6 | 0.6~0.7 | 0.7~0.8 | 0.8~0.9 | 0.9~1.0 |
| 体积占比/% | 8.28 | 6.40 | 4.35 | 2.14 | 1.25 |
), ArticleFig(id=1241409539409498231, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409513094435147, language=EN, label=Table 5, caption=
The rock fragments volume proportion of different particle intervals in the blast pile of the field test area
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| 粒径/m | 0~0.1 | 0.1~0.2 | 0.2~0.3 | 0.3~0.4 | 0.4~0.5 | 0.5~0.6 |
| 占比/% | 24.88 | 7.5 | 10.35 | 13.38 | 11.71 | 9.00 |
| 粒径/m | 0.6~0.7 | 0.7~0.8 | 0.8~0.9 | 0.9~1.0 | 1.0~1.3 | |
| 占比/% | 6.09 | 4.98 | 3.67 | 3.45 | 4.99 | |
), ArticleFig(id=1241409539526938751, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409513094435147, language=CN, label=表5, caption=
现场试验区域爆堆不同粒径区间岩块体积占比
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| 粒径/m | 0~0.1 | 0.1~0.2 | 0.2~0.3 | 0.3~0.4 | 0.4~0.5 | 0.5~0.6 |
| 占比/% | 24.88 | 7.5 | 10.35 | 13.38 | 11.71 | 9.00 |
| 粒径/m | 0.6~0.7 | 0.7~0.8 | 0.8~0.9 | 0.9~1.0 | 1.0~1.3 | |
| 占比/% | 6.09 | 4.98 | 3.67 | 3.45 | 4.99 | |
), ArticleFig(id=1241409539615019141, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409513094435147, language=EN, label=Table 6, caption=
The numerical simulation test scheme
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| 方案编号 | 装药结构 | 孔网参数/m | 装药长度/m |
|---|
| 下部 | 中部 | 上部 |
|---|
| 1 | 连续装药 | 7.0×3.5 | | 13.5 | |
| 2 | 一段空气间隔 | 7.0×3.5 | 8.0 | - | 4.5 |
| 3 | 一段空气间隔 | 6.5×3.5 | 8.0 | - | 4.5 |
| 4 | 二段空气间隔 | 7.0×3.5 | 6.5 | 3.0 | 2.0 |
| 5 | 二段空气间隔 | 6.5×3.5 | 6.5 | 3.0 | 2.0 |
), ArticleFig(id=1241409539774402700, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409513094435147, language=CN, label=表6, caption=
数值模拟试验方案
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| 方案编号 | 装药结构 | 孔网参数/m | 装药长度/m |
|---|
| 下部 | 中部 | 上部 |
|---|
| 1 | 连续装药 | 7.0×3.5 | | 13.5 | |
| 2 | 一段空气间隔 | 7.0×3.5 | 8.0 | - | 4.5 |
| 3 | 一段空气间隔 | 6.5×3.5 | 8.0 | - | 4.5 |
| 4 | 二段空气间隔 | 7.0×3.5 | 6.5 | 3.0 | 2.0 |
| 5 | 二段空气间隔 | 6.5×3.5 | 6.5 | 3.0 | 2.0 |
), ArticleFig(id=1241409539891843223, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409513094435147, language=EN, label=Table 7, caption=
Air material and state equation parameters
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| ρk/(kg·m-3) | C0 | C1 | C2 | C3 | C4 | C5 | C6 | E0 a | V0 |
|---|
| 1.2 | 0 | 0 | 0 | 0 | 0.4 | 0.4 | 0 | 253 300 | 1 |
), ArticleFig(id=1241409540088975517, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409513094435147, language=CN, label=表7, caption=
空气材料及状态方程参数
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| ρk/(kg·m-3) | C0 | C1 | C2 | C3 | C4 | C5 | C6 | E0 a | V0 |
|---|
| 1.2 | 0 | 0 | 0 | 0 | 0.4 | 0.4 | 0 | 253 300 | 1 |
), ArticleFig(id=1241409540239970468, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409513094435147, language=EN, label=Table 8, caption=
Damage unit volume statistics of blasting numerical models with different schemes
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| 编号 | 装药结构 | 块度尺寸 损伤区间 爆破总体积/m3 | 0~0.3 m 0.793<D<1 | 0.3~0.9 m 0.286<D<0.793 | 0.9 m以上 0<D<0.286 |
|---|
| 体积/m3 | 占比/% | 体积/m3 | 占比/% | 体积/m3 | 占比/% |
|---|
| 1 | 连续装药-7×3.5m | 1238.2 | 663.6 | 53.59 | 515.4 | 41.62 | 59.2 | 4.79 |
| 2 | 一段空气间隔-7×3.5m | 1234.2 | 509.1 | 41.25 | 583.5 | 47.28 | 141.6 | 11.47 |
| 3 | 一段空气间隔-6.5×3.5m | 1086.0 | 473.1 | 43.56 | 570.9 | 52.57 | 42.0 | 3.87 |
| 4 | 二段空气间隔-7×3.5m | 1240.1 | 423.2 | 34.13 | 586.6 | 47.30 | 230.3 | 18.57 |
| 5 | 二段空气间隔-6.5×3.5m | 1051.6 | 326.5 | 31.05 | 662.2 | 62.97 | 62.9 | 5.98 |
), ArticleFig(id=1241409540390965417, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409513094435147, language=CN, label=表8, caption=
不同方案的爆破数值模型损伤单元体积统计表
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| 编号 | 装药结构 | 块度尺寸 损伤区间 爆破总体积/m3 | 0~0.3 m 0.793<D<1 | 0.3~0.9 m 0.286<D<0.793 | 0.9 m以上 0<D<0.286 |
|---|
| 体积/m3 | 占比/% | 体积/m3 | 占比/% | 体积/m3 | 占比/% |
|---|
| 1 | 连续装药-7×3.5m | 1238.2 | 663.6 | 53.59 | 515.4 | 41.62 | 59.2 | 4.79 |
| 2 | 一段空气间隔-7×3.5m | 1234.2 | 509.1 | 41.25 | 583.5 | 47.28 | 141.6 | 11.47 |
| 3 | 一段空气间隔-6.5×3.5m | 1086.0 | 473.1 | 43.56 | 570.9 | 52.57 | 42.0 | 3.87 |
| 4 | 二段空气间隔-7×3.5m | 1240.1 | 423.2 | 34.13 | 586.6 | 47.30 | 230.3 | 18.57 |
| 5 | 二段空气间隔-6.5×3.5m | 1051.6 | 326.5 | 31.05 | 662.2 | 62.97 | 62.9 | 5.98 |
), ArticleFig(id=1241409541896720559, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409513094435147, language=EN, label=Table 9, caption=
Fragmentation statistics of on-site blasting test
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| 试验编号 | 工况 | 炸药单耗q/(kg·m-3) | 各粒径占比/% |
|---|
| 0~0.3 m | 0.3~0.9 m | >0.9 m |
|---|
| 1#试验组 | 二段空气间隔装药-6.5×3.5 m | 0.305 | 30.16 | 60.76 | 9.08 |
| 2#对照组 | 连续装药-7×3.5 m | 0.340 | 52.24 | 40.67 | 7.09 |
), ArticleFig(id=1241409541963829429, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409513094435147, language=CN, label=表9, caption=
现场爆破试验爆堆块度统计
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| 试验编号 | 工况 | 炸药单耗q/(kg·m-3) | 各粒径占比/% |
|---|
| 0~0.3 m | 0.3~0.9 m | >0.9 m |
|---|
| 1#试验组 | 二段空气间隔装药-6.5×3.5 m | 0.305 | 30.16 | 60.76 | 9.08 |
| 2#对照组 | 连续装药-7×3.5 m | 0.340 | 52.24 | 40.67 | 7.09 |
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