Article(id=1240702078255952616, tenantId=1146029695717560320, journalId=1240670690148397066, issueId=1240702069502440044, articleNumber=null, orderNo=null, doi=10.3963/j.issn.1001-487X.2025.03.007, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1739635200000, receivedDateStr=2025-02-16, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1773736026585, onlineDateStr=2026-03-17, pubDate=1744128000000, pubDateStr=2025-04-09, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1773736026585, onlineIssueDateStr=2026-03-17, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1773736026585, creator=13701087609, updateTime=1773736026585, updator=13701087609, issue=Issue{id=1240702069502440044, tenantId=1146029695717560320, journalId=1240670690148397066, year='2025', volume='42', issue='3', pageStart='1', pageEnd='202', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1773736024499, creator=13701087609, updateTime=1773736381642, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1240703567544250807, tenantId=1146029695717560320, journalId=1240670690148397066, issueId=1240702069502440044, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1240703567544250808, tenantId=1146029695717560320, journalId=1240670690148397066, issueId=1240702069502440044, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=54, endPage=62, ext={EN=ArticleExt(id=1240702078532776694, articleId=1240702078255952616, tenantId=1146029695717560320, journalId=1240670690148397066, language=EN, title=Optimization of Hole Distribution and Delay Time in Blasting Excavation of Mine Roadway, columnId=1240702072862069231, journalTitle=Blasting, columnName=BLASTING IN ORE AND ROCK, runingTitle=null, highlight=null, articleAbstract=
In order to improve the effectiveness of mining roadway blasting excavation and reduce the damage of blasting vibration, the method combined field blasting tests, blasting vibration monitoring tests, and numerical simulation analysis was adopted. The allocation of actual holes and vacant holes was determined according to the utilization rate of the blasting hole. The reasonable delay time was determined based on the peak of particle vibration velocity. At the same time, a numerical model was established based on the size of the roadway and the physical and mechanical properties of both the roadway and the surrounding rock. Based on the material parameters, the impact of roadway blasting excavation on the surrounding rock structure was analyzed using ANSYS/LS-DYNA numerical simulation software. The research findings demonstrate that employing the layout method of central real holes coupled with surrounding empty holes for roadway blasting excavation results in a utilization rate of cut holes exceeding 96%, with the highest utilization rate reaching 97.9%. This indicates that the strategic arrangement of real and empty holes can significantly enhance the efficiency of blasting excavation. Besides, when the delay time increased from 50 ms to 75 ms, the attenuation rate of the peak of particle vibration velocity exceeded 20% at the same position. When the delay time was 100 ms, the peak particle vibration velocity decreased to 2.97 cm/s at 25 m, indicating that the delay time can significantly reduce the damage caused by blasting vibration. Meanwhile, when the layout of central real holes and surrounding empty holes with a delay time of 100 ms was employed to analyze the surrounding rock structure during roadway blasting excavation through numerical simulation, it was observed that a tensile stress of 9.1 MPa was generated at the arch crown position within a 1-meter range from the roadway section. Tensile stress greater than 5 MPa was present at the arch waist position within a range of 1 to 4 m. Therefore, it is recommended to add steel frame support to the arch crown position and spray concrete on the arch waist position.
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为了提高矿山巷道爆破掘进的效果,同时降低爆破振动的危害,采用现场爆破试验、振动监测试验以及数值模拟相结合的方法,根据炮眼利用率选取装药孔与空孔的布置方式,基于质点振速峰值确定合理的延期时间,同时按照巷道尺寸和围岩物理力学指标建立数值模型以及设置材料参数,利用ANSYS/LS-DYNA分析巷道爆破掘进对围岩结构的影响。研究结果表明:采用中心装药孔+周围空孔的布孔方式进行巷道爆破掘进时,掏槽孔的炮眼利用率均大于96%,最高的炮眼利用率甚至达到了97.9%,说明装药孔与空孔的合理布置可以有效地提高爆破掘进的效果;同时发现当延期时间从50 ms增加至75 ms时,相同位置处质点振速峰值的衰减率超过了20%,当延期时间为100 ms时,距离爆源25 m处的质点振速峰值降低至2.97 cm/s,说明延期时间可以明显地降低爆破振动的危害;当采用中心装药孔+周围空孔的布孔方式及100 ms的延期时间分析巷道爆破掘进对围岩结构的数值计算结果时,发现距离巷道断面1 m的范围内,拱顶产生了9.1 MPa的拉应力,在1~4 m范围内,拱腰位置均存在大于5 MPa的拉应力,由此建议拱顶增加钢架支护,侧壁喷射混凝土进行初期支护。研究成果可为类似巷道爆破掘进提供参考以及为围岩支护设计提供依据。
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胡刚(1990-),男,辽宁省阜新市,讲师、博士,主要从事工程爆破技术研究工作,(E-mail)1125019679@qq.com。
HU Gang (1990-), Male, Fuxin Liaoning, Lecture, doctor, Research on engineering blasting technology, (E-mail) 1125019679@qq.com.
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1.Institute of Blasting Technique, Liaoning Technical University, Fuxin 123000, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1240702085033948123, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702078255952616, authorId=1240702083461084109, language=CN, stringName=胡刚, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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胡刚(1990-),男,辽宁省阜新市,讲师、博士,主要从事工程爆破技术研究工作,(E-mail)1125019679@qq.com。
HU Gang (1990-), Male, Fuxin Liaoning, Lecture, doctor, Research on engineering blasting technology, (E-mail) 1125019679@qq.com.
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胡刚(1990-),男,辽宁省阜新市,讲师、博士,主要从事工程爆破技术研究工作,(E-mail)1125019679@qq.com。
HU Gang (1990-), Male, Fuxin Liaoning, Lecture, doctor, Research on engineering blasting technology, (E-mail) 1125019679@qq.com.
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1.辽宁工程技术大学 爆破技术研究院,阜新 123000)]), AuthorCompany(id=1240702083389780931, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702078255952616, xref=2., ext=[AuthorCompanyExt(id=1240702083393975236, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702078255952616, companyId=1240702083389780931, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.Baotou Quanshan Blasting Engineering Co., Ltd., Baotou 014060, China), AuthorCompanyExt(id=1240702083402363845, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702078255952616, companyId=1240702083389780931, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.包头市泉山爆破工程有限责任公司,包头 014060)])], figs=[ArticleFig(id=1240702086904606818, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702078255952616, language=EN, label=Fig. 1, caption=
Hole distribution(umit:mm), figureFileSmall=6AUXZx89Sqs7odvQdppE6A==, figureFileBig=tjMgD6AWpFR1B6SsLFRvJg==, tableContent=null), ArticleFig(id=1240702087013658728, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702078255952616, language=CN, label=图1, caption=
布孔方式(单位:mm), figureFileSmall=6AUXZx89Sqs7odvQdppE6A==, figureFileBig=tjMgD6AWpFR1B6SsLFRvJg==, tableContent=null), ArticleFig(id=1240702087231762556, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702078255952616, language=EN, label=Fig. 2, caption=
Measuring points arrangement(unit:m), figureFileSmall=aVnROc1hyCVhs+e6MIWuzw==, figureFileBig=/QsV5Puw9vjdY6B1LVqJhA==, tableContent=null), ArticleFig(id=1240702087319842949, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702078255952616, language=CN, label=图2, caption=
测点布置(单位:m), figureFileSmall=aVnROc1hyCVhs+e6MIWuzw==, figureFileBig=/QsV5Puw9vjdY6B1LVqJhA==, tableContent=null), ArticleFig(id=1240702087382757519, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702078255952616, language=EN, label=Fig. 3, caption=
Instrument installation, figureFileSmall=cYOWT3krXnpvBzZAUTg/uQ==, figureFileBig=9DdTZoa173TEHFEgkTyyIQ==, tableContent=null), ArticleFig(id=1240702087479226518, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702078255952616, language=CN, label=图3, caption=
仪器安装, figureFileSmall=cYOWT3krXnpvBzZAUTg/uQ==, figureFileBig=9DdTZoa173TEHFEgkTyyIQ==, tableContent=null), ArticleFig(id=1240702087571501215, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702078255952616, language=EN, label=Fig. 4, caption=
Particle vibration velocity curve of 50 ms of cutting hole, figureFileSmall=Abu3SkexE2Ydmb7ZMPtcbw==, figureFileBig=7WbLDo7++JUmoyd79/xW2w==, tableContent=null), ArticleFig(id=1240702087688941734, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702078255952616, language=CN, label=图4, caption=
掏槽孔延期时间为50 ms的质点振速时程曲线, figureFileSmall=Abu3SkexE2Ydmb7ZMPtcbw==, figureFileBig=7WbLDo7++JUmoyd79/xW2w==, tableContent=null), ArticleFig(id=1240702087823159473, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702078255952616, language=EN, label=Fig. 5, caption=
Particle vibration velocity curve of 75 ms of cutting hole, figureFileSmall=Rd+SRmm01VjP+ngkNznb8g==, figureFileBig=LjhjGKvk1uk7GgvuZrukmA==, tableContent=null), ArticleFig(id=1240702087919628471, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702078255952616, language=CN, label=图5, caption=
掏槽孔延期时间为75 ms的质点振速时程曲线, figureFileSmall=Rd+SRmm01VjP+ngkNznb8g==, figureFileBig=LjhjGKvk1uk7GgvuZrukmA==, tableContent=null), ArticleFig(id=1240702088032874686, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702078255952616, language=EN, label=Fig. 6, caption=
Particle vibration velocity curve of 100 ms of cutting hole, figureFileSmall=4tyBxxGcrdCBlWYQfMFiVw==, figureFileBig=azQTqWIWqjn4femdm7OylQ==, tableContent=null), ArticleFig(id=1240702089492492485, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702078255952616, language=CN, label=图6, caption=
掏槽孔延期时间为100 ms的质点振速时程曲线, figureFileSmall=4tyBxxGcrdCBlWYQfMFiVw==, figureFileBig=azQTqWIWqjn4femdm7OylQ==, tableContent=null), ArticleFig(id=1240702089601544399, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702078255952616, language=EN, label=Fig. 7, caption=
Point D particle vibration velocity curve of 50 ms of cutting hole, figureFileSmall=N54t+bjk/JHr9F/8PtCK+Q==, figureFileBig=NtTlj1rfLx8C+Oxub24FyA==, tableContent=null), ArticleFig(id=1240702089702207702, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702078255952616, language=CN, label=图7, caption=
掏槽孔延期时间为50 ms的D点质点振速时程曲线, figureFileSmall=N54t+bjk/JHr9F/8PtCK+Q==, figureFileBig=NtTlj1rfLx8C+Oxub24FyA==, tableContent=null), ArticleFig(id=1240702089777705179, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702078255952616, language=EN, label=Fig. 8, caption=
Analysis of vibration velocity peak of cutting hole, figureFileSmall=uEMjNeUWiGzwMpocAY6Z9Q==, figureFileBig=9+hLt6MSe9O/LCjaY+s4xw==, tableContent=null), ArticleFig(id=1240702089874174180, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702078255952616, language=CN, label=图8, caption=
掏槽孔质点振速峰值分析, figureFileSmall=uEMjNeUWiGzwMpocAY6Z9Q==, figureFileBig=9+hLt6MSe9O/LCjaY+s4xw==, tableContent=null), ArticleFig(id=1240702089958060267, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702078255952616, language=EN, label=Fig. 9, caption=
Numerical model, figureFileSmall=WPb6ufPS7V5d7Yz8dPSwcg==, figureFileBig=/YxxCtCkXm/XRSwBYpICvQ==, tableContent=null), ArticleFig(id=1240702090050334962, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702078255952616, language=CN, label=图9, caption=
数值模型, figureFileSmall=WPb6ufPS7V5d7Yz8dPSwcg==, figureFileBig=/YxxCtCkXm/XRSwBYpICvQ==, tableContent=null), ArticleFig(id=1240702090155192568, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702078255952616, language=EN, label=Fig. 10, caption=
Particle vibration velocity, figureFileSmall=pvkV1JrLyGr8qixusNt2zw==, figureFileBig=REOMOzDWSZZpzJbEjeCzlw==, tableContent=null), ArticleFig(id=1240702090243272962, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702078255952616, language=CN, label=图10, caption=
质点振速时程曲线, figureFileSmall=pvkV1JrLyGr8qixusNt2zw==, figureFileBig=REOMOzDWSZZpzJbEjeCzlw==, tableContent=null), ArticleFig(id=1240702090360713482, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702078255952616, language=EN, label=Fig. 11, caption=
Error analysis, figureFileSmall=IXEjMV+PtzCcwzk/YLze2g==, figureFileBig=rf6CvLJubmuCJUMpO6maBQ==, tableContent=null), ArticleFig(id=1240702090457182482, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702078255952616, language=CN, label=图11, caption=
误差分析, figureFileSmall=IXEjMV+PtzCcwzk/YLze2g==, figureFileBig=rf6CvLJubmuCJUMpO6maBQ==, tableContent=null), ArticleFig(id=1240702090553651480, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702078255952616, language=EN, label=Fig. 12, caption=
Stress nephogram of surrounding rock, figureFileSmall=xcbn6pwgzT627KVnmkpD3w==, figureFileBig=6shV78+8yzHVnRNwvaHxNw==, tableContent=null), ArticleFig(id=1240702090645926174, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702078255952616, language=CN, label=图12, caption=
围岩结构的应力云图, figureFileSmall=xcbn6pwgzT627KVnmkpD3w==, figureFileBig=6shV78+8yzHVnRNwvaHxNw==, tableContent=null), ArticleFig(id=1240702090725617956, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702078255952616, language=EN, label=Fig. 13, caption=
Stress curve of surrounding rock, figureFileSmall=JG9l2qOpEVd1cDjpoFIJXQ==, figureFileBig=kMHnFO1K+1QI9Yn8suF51g==, tableContent=null), ArticleFig(id=1240702090826281259, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702078255952616, language=CN, label=图13, caption=
围岩结构的应力曲线, figureFileSmall=JG9l2qOpEVd1cDjpoFIJXQ==, figureFileBig=kMHnFO1K+1QI9Yn8suF51g==, tableContent=null), ArticleFig(id=1240702090931138864, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702078255952616, language=EN, label=Table 1, caption=
Blasting parameters and results of the first hole distribution
, figureFileSmall=null, figureFileBig=null, tableContent=
| 炮孔编号Hole number | 单孔药量Single-hole charge/kg | 起爆时间Break time/ms | 平均残孔长度Average residual hole length/m | 炮眼利用率Percentage of utilization of hole/% |
|---|
| 试验1 First experiment | 试验2 Second experiment | 试验3 Third experiment | 试验1 First experiment | 试验2 Second experiment | 试验3 Third experiment |
|---|
| 1 | 1.8 | 0 | | | | | | |
| 2~3 | 1.8 | 50 | 0.080 | 0.075 | 0.074 | 96.5 | 96.7 | 96.8 |
| 4~5 | 1.8 | 100 | | | | | | |
| 6~7 | 1.8 | 150 | 0.138 | 0.128 | 0.087 | 94.0 | 94.4 | 96.2 |
| 8~9 | 1.8 | 200 |
| 10~11 | 1.2 | 250 | 0.073 | 0.058 | 0.048 | 96.8 | 97.5 | 97.9 |
| 12~13 | 1.2 | 300 |
| 14~19 | 1.2 | 350 | 0.069 | 0.052 | 0.054 | 97.0 | 97.7 | 97.7 |
| 20~25 | 1.2 | 400 |
), ArticleFig(id=1240702091044385076, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702078255952616, language=CN, label=表1, caption=
第一种布孔方式的爆破参数及效果统计
, figureFileSmall=null, figureFileBig=null, tableContent=
| 炮孔编号Hole number | 单孔药量Single-hole charge/kg | 起爆时间Break time/ms | 平均残孔长度Average residual hole length/m | 炮眼利用率Percentage of utilization of hole/% |
|---|
| 试验1 First experiment | 试验2 Second experiment | 试验3 Third experiment | 试验1 First experiment | 试验2 Second experiment | 试验3 Third experiment |
|---|
| 1 | 1.8 | 0 | | | | | | |
| 2~3 | 1.8 | 50 | 0.080 | 0.075 | 0.074 | 96.5 | 96.7 | 96.8 |
| 4~5 | 1.8 | 100 | | | | | | |
| 6~7 | 1.8 | 150 | 0.138 | 0.128 | 0.087 | 94.0 | 94.4 | 96.2 |
| 8~9 | 1.8 | 200 |
| 10~11 | 1.2 | 250 | 0.073 | 0.058 | 0.048 | 96.8 | 97.5 | 97.9 |
| 12~13 | 1.2 | 300 |
| 14~19 | 1.2 | 350 | 0.069 | 0.052 | 0.054 | 97.0 | 97.7 | 97.7 |
| 20~25 | 1.2 | 400 |
), ArticleFig(id=1240702091136659774, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702078255952616, language=EN, label=Table 2, caption=
Blasting parameters and results of the second hole distribution
, figureFileSmall=null, figureFileBig=null, tableContent=
| 炮孔编号Hole number | 单孔药量Single-hole charge/kg | 起爆时间Break time/ms | 平均残孔长度Average residual hole length/m | 炮眼利用率Percentage of utilization of hole/% |
|---|
| 试验1 First experiment | 试验2 Second experiment | 试验3 Third experiment | 试验1 First experiment | 试验2 Second experiment | 试验3 Third experiment |
|---|
| 1~2 | 1.8 | 0 | | | | | | |
| 3~4 | 1.8 | 50 | 0.230 | 0.218 | 0.200 | 90.0 | 90.5 | 91.3 |
| 5~6 | 1.8 | 100 | | | | | | |
| 7~8 | 1.8 | 150 | 0.290 | 0.271 | 0.243 | 87.4 | 88.2 | 89.4 |
| 9~10 | 1.8 | 200 |
| 11~12 | 1.2 | 250 | 0.110 | 0.100 | 0.090 | 95.2 | 95.7 | 96.1 |
| 13~14 | 1.2 | 300 |
| 15~20 | 1.2 | 350 | 0.095 | 0.077 | 0.071 | 95.9 | 96.7 | 96.9 |
| 21~26 | 1.2 | 400 |
), ArticleFig(id=1240702091228934466, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702078255952616, language=CN, label=表2, caption=
第二种布孔方式的爆破参数及效果统计
, figureFileSmall=null, figureFileBig=null, tableContent=
| 炮孔编号Hole number | 单孔药量Single-hole charge/kg | 起爆时间Break time/ms | 平均残孔长度Average residual hole length/m | 炮眼利用率Percentage of utilization of hole/% |
|---|
| 试验1 First experiment | 试验2 Second experiment | 试验3 Third experiment | 试验1 First experiment | 试验2 Second experiment | 试验3 Third experiment |
|---|
| 1~2 | 1.8 | 0 | | | | | | |
| 3~4 | 1.8 | 50 | 0.230 | 0.218 | 0.200 | 90.0 | 90.5 | 91.3 |
| 5~6 | 1.8 | 100 | | | | | | |
| 7~8 | 1.8 | 150 | 0.290 | 0.271 | 0.243 | 87.4 | 88.2 | 89.4 |
| 9~10 | 1.8 | 200 |
| 11~12 | 1.2 | 250 | 0.110 | 0.100 | 0.090 | 95.2 | 95.7 | 96.1 |
| 13~14 | 1.2 | 300 |
| 15~20 | 1.2 | 350 | 0.095 | 0.077 | 0.071 | 95.9 | 96.7 | 96.9 |
| 21~26 | 1.2 | 400 |
), ArticleFig(id=1240702091329597765, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702078255952616, language=EN, label=Table 3, caption=
Blasting vibration test results
, figureFileSmall=null, figureFileBig=null, tableContent=
| 延期时间Delay time/ms | 仪器编号Instrument number | 爆心距离Epicentral distance/m | 质点振速峰值Peak particle vibration velocity/(cm·s-1) | 掏槽孔质点振速峰值peak particle vibration velocityof cutting hole/(cm·s-1) |
|---|
| 50 | A | 25 | 4.72 | 3.432 |
| B | 30 | 3.14 | 2.948 |
| C | 35 | 1.47 | 1.268 |
| D | 40 | 0.95 | 0.743 |
| 75 | A | 25 | 3.75 | 2.496 |
| B | 30 | 2.68 | 1.930 |
| C | 35 | 1.24 | 1.012 |
| D | 40 | 0.83 | 0.486 |
| 100 | A | 25 | 2.97 | 2.325 |
| B | 30 | 1.85 | 1.128 |
| C | 35 | 1.00 | 0.682 |
| D | 40 | 0.73 | 0.451 |
), ArticleFig(id=1240702091442843980, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702078255952616, language=CN, label=表3, caption=
爆破振动测试结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 延期时间Delay time/ms | 仪器编号Instrument number | 爆心距离Epicentral distance/m | 质点振速峰值Peak particle vibration velocity/(cm·s-1) | 掏槽孔质点振速峰值peak particle vibration velocityof cutting hole/(cm·s-1) |
|---|
| 50 | A | 25 | 4.72 | 3.432 |
| B | 30 | 3.14 | 2.948 |
| C | 35 | 1.47 | 1.268 |
| D | 40 | 0.95 | 0.743 |
| 75 | A | 25 | 3.75 | 2.496 |
| B | 30 | 2.68 | 1.930 |
| C | 35 | 1.24 | 1.012 |
| D | 40 | 0.83 | 0.486 |
| 100 | A | 25 | 2.97 | 2.325 |
| B | 30 | 1.85 | 1.128 |
| C | 35 | 1.00 | 0.682 |
| D | 40 | 0.73 | 0.451 |
), ArticleFig(id=1240702091564478803, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702078255952616, language=EN, label=Table 4, caption=
Material parameters of rock
, figureFileSmall=null, figureFileBig=null, tableContent=
| 密度Density/(kg·m-3) | 弹性模量Elastic modulus/GPa | 泊松比Poisson ratio | 抗压强度Compressive strength/MPa | 抗拉强度Tensile strength/MPa |
|---|
| 2600 | 34 | 0.2 | 85 | 5 |
), ArticleFig(id=1240702091652559189, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702078255952616, language=CN, label=表4, caption=
围岩材料模型参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 密度Density/(kg·m-3) | 弹性模量Elastic modulus/GPa | 泊松比Poisson ratio | 抗压强度Compressive strength/MPa | 抗拉强度Tensile strength/MPa |
|---|
| 2600 | 34 | 0.2 | 85 | 5 |
), ArticleFig(id=1240702091753222490, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702078255952616, language=EN, label=Table 5, caption=
Material parameters of explosive
, figureFileSmall=null, figureFileBig=null, tableContent=
| 密度Density/(kg·m-3) | 爆速Detonation velocity/(m·s-1) | PCJ压力Pressure/GPa | A | B | R1 | R2 | ω | E0 |
|---|
| 1250 | 4400 | 5.2 | 1×109 | 4.17×108 | 10 | 3.8 | 0.039 | 7×109 |
), ArticleFig(id=1240702091853885792, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702078255952616, language=CN, label=表5, caption=
炸药材料模型参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 密度Density/(kg·m-3) | 爆速Detonation velocity/(m·s-1) | PCJ压力Pressure/GPa | A | B | R1 | R2 | ω | E0 |
|---|
| 1250 | 4400 | 5.2 | 1×109 | 4.17×108 | 10 | 3.8 | 0.039 | 7×109 |
), ArticleFig(id=1240702091941966181, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702078255952616, language=EN, label=Table 6, caption=
Peak value of particle vibration velocity
, figureFileSmall=null, figureFileBig=null, tableContent=
| 爆心距离Epicentral distance/m | 质点振速峰值Peak particle vibration velocity/(cm·s-1) |
|---|
| 数值模拟Numerical simulation | 拟合公式Fitting formula | 掏槽孔拟合公式Fitting formula of cutting hole |
|---|
| 3.5 | 18.64 | 15.72 | 18.37 |
| 4.5 | 15.33 | 11.62 | 14.29 |
| 5.5 | 13.10 | 9.14 | 11.69 |
| 6.5 | 12.03 | 7.48 | 9.89 |
), ArticleFig(id=1240702092030046571, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702078255952616, language=CN, label=表6, caption=
质点振速峰值汇总表
, figureFileSmall=null, figureFileBig=null, tableContent=
| 爆心距离Epicentral distance/m | 质点振速峰值Peak particle vibration velocity/(cm·s-1) |
|---|
| 数值模拟Numerical simulation | 拟合公式Fitting formula | 掏槽孔拟合公式Fitting formula of cutting hole |
|---|
| 3.5 | 18.64 | 15.72 | 18.37 |
| 4.5 | 15.33 | 11.62 | 14.29 |
| 5.5 | 13.10 | 9.14 | 11.69 |
| 6.5 | 12.03 | 7.48 | 9.89 |
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