Article(id=1241687546141405270, tenantId=1146029695717560320, journalId=1240670690148397066, issueId=1241687532522492319, articleNumber=null, orderNo=null, doi=10.3963/j.issn.1001-487X.2023.03.002, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1680192000000, receivedDateStr=2023-03-31, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1773970980439, onlineDateStr=2026-03-20, pubDate=1693497600000, pubDateStr=2023-09-01, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1773970980439, onlineIssueDateStr=2026-03-20, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1773970980439, creator=13701087609, updateTime=1773970980439, updator=13701087609, issue=Issue{id=1241687532522492319, tenantId=1146029695717560320, journalId=1240670690148397066, year='2023', volume='40', issue='3', pageStart='1', pageEnd='242', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1773970977192, creator=13701087609, updateTime=1773971036114, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1241687779722187605, tenantId=1146029695717560320, journalId=1240670690148397066, issueId=1241687532522492319, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1241687779722187606, tenantId=1146029695717560320, journalId=1240670690148397066, issueId=1241687532522492319, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=12, endPage=19, ext={EN=ArticleExt(id=1241687546468560998, articleId=1241687546141405270, tenantId=1146029695717560320, journalId=1240670690148397066, language=EN, title=Analysis of Optimal Delay Time based on Improved Linear Superposition Method and Rock Fragmentation Effect, columnId=1240702071733801442, journalTitle=Blasting, columnName=THEORETICAL AND TECHNOLOGICAL EXPLORATION, runingTitle=null, highlight=null, articleAbstract=
The optimization of delay time is very important for controlling blasting vibrations and guaranteeing the technical-economic effect of blasting projects. The proposed improved linear superposition method can be used to in-depth discover the relationship between the particle peak velocity (PPV) of blasting vibration and delay time. Because blast vibrations actually belong to random process, which means merely using a one-time measured single-hole blasting vibration signal to simulate a multi-hole blast vibration waveform may not be reasonable. Similarly, it is also not enough to simulate a multi-hole blast vibration waveform corresponding to a certain delay time only once. A method involving random variables and statistical treatments is necessary. Firstly, Fourier series is used to represent a measured single-hole blast vibration waveform. This is necessary to formulize a piece of measured time-series data. Secondly, random variables are added to the coefficients and phases of the Fourier series expansion to generate a specified number of single-hole blasting vibration waveforms. Thirdly, Monte Carlo simulation is used to calculate the mean value of PPVs corresponding to each delay time between 0ms and 250 ms with an increment of 1 ms, and the change curve of the average PPV with delay time can be obtained. The results of example analysis show that if the civil house 531 m away from the explosion source is taken as the protection target and 0.45 cm/s is taken as the peak particle velocity control threshold, any delay time more than 7 ms can be selected to meet the safety standard, and when the delay time increases, the PPV decreases in general. To pick a specific delay time from the range determined by the above process, it is necessary to observe the relationship between the rock fragmentation effect and delay times. By investigating the fragmentation results of four blast tests, the total amount of boulder yield decreases first and then increases with the delay time per meter, and the minimum value appears when the delay time is 7 ms/m. That is, if the designed hole spacing is 6 m, and hole-by-hole initiation is adopted, the optimal delay time in terms of rock fragmentation is about 40ms. This delay time just falls into the range larger than 7 ms determined previous by the improved linear superposition method. Therefore, by comprehensively considering both the results of Monte Calo simulation of blasting vibration and the rock fragmentation tests, the optimal delay time of the mine can be finally selected as 40 ms.
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LI Li-feng (1986-), Ph. D, mainly engaged in the teaching and researching work on mining, blasting and safety, (E-mail)
lifeng.li@whut.edu.cn.
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延期时间的优选对于矿山爆破振动的控制以及爆破技术经济效果的保障都至关重要。改进的线性叠加法可用于研究爆破振动质点峰值振速(PPV)与不同延期时间的关系。首先,利用傅里叶级数来表示实测单孔爆破振动波形;其次,在傅立叶级数展开式的系数和相位中加入随机变量生成指定数量的单孔爆破振动波形;再次,利用蒙特卡洛模拟计算0 ms到250 ms之间每个延期时间对应的PPV均值,得到PPV随延期时间变化曲线。实例分析结果表明:若以距离爆源531 m处的民房为保护目标,以0.45 cm/s为峰值质点振速控制标准,7 ms以上的延期时间均可选择,并且当延期时间增大,PPV呈减小趋势。结合矿山岩石破碎效果试验,大块量随米延期时间增大呈先减小后增大的抛物线变化规律,其最小值出现在米延期为7 ms/m处。若以爆破振动监测所在矿山的6 m孔距算,其岩石破碎最优延期时间约为40 ms。综合爆破振动蒙特卡洛模拟结果和矿山岩石破碎效果试验结果,得到该矿山爆破最优延期时间可选择为40 ms。
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汤松(1986-),男,工程师,主要从事采矿、爆破等方面的工程设计与管理工作,(E-mail)451067361@qq.com。
TANG Song (1986-), male, mining engineer, mainly engaged in the engineering design and management related to mining and blasting, (E-mail) 451067361@qq.com.
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汤松(1986-),男,工程师,主要从事采矿、爆破等方面的工程设计与管理工作,(E-mail)451067361@qq.com。
TANG Song (1986-), male, mining engineer, mainly engaged in the engineering design and management related to mining and blasting, (E-mail) 451067361@qq.com.
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汤松(1986-),男,工程师,主要从事采矿、爆破等方面的工程设计与管理工作,(E-mail)451067361@qq.com。
TANG Song (1986-), male, mining engineer, mainly engaged in the engineering design and management related to mining and blasting, (E-mail) 451067361@qq.com.
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ZHANG Zhi-cheng,
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28(2): 45-48, 71. (in Chinese), articleTitle=Discussion of delay interval election of hole by hole initiation, refAbstract=null), Reference(id=1241687566508945506, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546141405270, doi=null, pmid=null, pmcid=null, year=2019, volume=38, issue=15, pageStart=134, pageEnd=141, url=null, language=null, rfNumber=[21], rfOrder=31, authorNames=龚敏, 石发才, 吴晓东, journalName=振动与冲击, refType=null, unstructuredReference=龚敏, 石发才, 吴晓东. 基于叠加和频谱分析的电子雷管延期时间研究[J].
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38(15): 134-141., articleTitle=基于叠加和频谱分析的电子雷管延期时间研究, refAbstract=null), Reference(id=1241687566588637285, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546141405270, doi=null, pmid=null, pmcid=null, year=2019, volume=38, issue=15, pageStart=134, pageEnd=141, url=null, language=null, rfNumber=[21], rfOrder=32, authorNames=GONG Min, SHI Fa-cai, WU Xiao-dong, journalName=Journal of Vibration and Shock, refType=null, unstructuredReference=
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38(15): 134-141. (in Chinese), articleTitle=Delay time of electronic detonators based on superposition and frequency spectral analysis, refAbstract=null), Reference(id=1241687568069226602, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546141405270, doi=null, pmid=null, pmcid=null, year=2014, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=[22], rfOrder=33, authorNames=null, journalName=null, refType=null, unstructuredReference=GB 6722—2014爆破安全规程[S].
2014., articleTitle=null, refAbstract=null), Reference(id=1241687568153112685, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546141405270, doi=null, pmid=null, pmcid=null, year=2014, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=[22], rfOrder=34, authorNames=null, journalName=null, refType=null, unstructuredReference=GB 6722—2014 Safety regulations for blasting[S].
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Schematic diagram of measuring point layout (unit: m), figureFileSmall=eSshH/297Y0SgkrnpVgtDw==, figureFileBig=Qg2L2nqOYW1UI55Sau8jOg==, tableContent=null), ArticleFig(id=1241687559735145260, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546141405270, language=CN, label=图1, caption=
测点布置示意图(单位:m), figureFileSmall=eSshH/297Y0SgkrnpVgtDw==, figureFileBig=Qg2L2nqOYW1UI55Sau8jOg==, tableContent=null), ArticleFig(id=1241687559944860469, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546141405270, language=EN, label=Fig. 2, caption=
Test results of blasting vibration (x direction), figureFileSmall=9ClWLG3UudvZeNSpcWgXrw==, figureFileBig=wC8Rc6bIqj4QQRkE9F99BA==, tableContent=null), ArticleFig(id=1241687560062300994, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546141405270, language=CN, label=图2, caption=
爆破振动测试结果(x方向), figureFileSmall=9ClWLG3UudvZeNSpcWgXrw==, figureFileBig=wC8Rc6bIqj4QQRkE9F99BA==, tableContent=null), ArticleFig(id=1241687560167158599, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546141405270, language=EN, label=Fig. 3, caption=
Randomly generated Single hole blasting vibration waveforms (x direction) (The red curve represents the measured single hole blasting vibration waveform, and the gray curves represents the randomly generated single hole blasting vibration waveforms), figureFileSmall=GZkeMtXA2432PlrKRsornA==, figureFileBig=VBR9U3k63O6dJpCdcdaf/Q==, tableContent=null), ArticleFig(id=1241687560263627600, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546141405270, language=CN, label=图3, caption=
随机生成的单孔爆破振动波形(x方向)(红色曲线代表实测单孔爆破振动波形,灰色曲线代表随机生成的单孔爆破振动波形), figureFileSmall=GZkeMtXA2432PlrKRsornA==, figureFileBig=VBR9U3k63O6dJpCdcdaf/Q==, tableContent=null), ArticleFig(id=1241687560351707991, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546141405270, language=EN, label=Fig. 4, caption=
Linear superposition result of a 18-hole blasting vibration waveform at test point 1 (delay time=5 ms), figureFileSmall=R5aCoUXDBQBzExErkBiNkw==, figureFileBig=OJM3MUiqrQoZ4XeJ8lufhg==, tableContent=null), ArticleFig(id=1241687560435594077, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546141405270, language=CN, label=图4, caption=
1号测点18孔爆破振动波形的线性叠加结果(延期时间=5 ms), figureFileSmall=R5aCoUXDBQBzExErkBiNkw==, figureFileBig=OJM3MUiqrQoZ4XeJ8lufhg==, tableContent=null), ArticleFig(id=1241687560532063074, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546141405270, language=EN, label=Fig. 5, caption=
Monte Carlo simulation results of 18-hole blasting vibration waveform of at test point 1 (delay time=5 ms), figureFileSmall=LPFUCJIcEaDKwGb/onz+FQ==, figureFileBig=h9O3EybPl6uyuB2kUSxkZw==, tableContent=null), ArticleFig(id=1241687560691446631, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546141405270, language=CN, label=图5, caption=
1号测点18孔爆破振动波形的蒙特卡洛模拟结果(延期时间=5 ms), figureFileSmall=LPFUCJIcEaDKwGb/onz+FQ==, figureFileBig=h9O3EybPl6uyuB2kUSxkZw==, tableContent=null), ArticleFig(id=1241687560762749803, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546141405270, language=EN, label=Fig. 6, caption=
PPV Histogram of 18-hole blasting vibration waveforms for test point 1 (delay time=5 ms; Mean μ=0.57 ms; Standard deviation σ=0.13 ms), figureFileSmall=E7BfZKr0R9qNLgG4oVPzVg==, figureFileBig=LMDHLlZcHywc+8i70KnSfA==, tableContent=null), ArticleFig(id=1241687560829858671, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546141405270, language=CN, label=图6, caption=
1号测点18孔爆破振动波形PPV直方图(延期时间=5 ms;均值μ=0.57 ms;标准差σ=0.13 ms), figureFileSmall=E7BfZKr0R9qNLgG4oVPzVg==, figureFileBig=LMDHLlZcHywc+8i70KnSfA==, tableContent=null), ArticleFig(id=1241687560896967540, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546141405270, language=EN, label=Fig. 7, caption=
Monte Carlo simulation results of peak particle velocity vs. delay time (x direction), figureFileSmall=/Fw2sUu8cb11fFuFRshD3A==, figureFileBig=kjhxasSiNpxnDMgWzme8Zg==, tableContent=null), ArticleFig(id=1241687560985047931, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546141405270, language=CN, label=图7, caption=
峰值质点振速随延期时间变化的蒙特卡洛模拟结果(x方向), figureFileSmall=/Fw2sUu8cb11fFuFRshD3A==, figureFileBig=kjhxasSiNpxnDMgWzme8Zg==, tableContent=null), ArticleFig(id=1241687561068934018, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546141405270, language=EN, label=Fig. 8, caption=
Relation between delay time per meter and rock fragmentation effect, figureFileSmall=DmLxc8DidzAXxz7GkEtPkQ==, figureFileBig=wDPY4d7Z2xFtykW/wuT2pA==, tableContent=null), ArticleFig(id=1241687561152820104, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546141405270, language=CN, label=图8, caption=
每米延期时间与岩石破碎效果关系, figureFileSmall=DmLxc8DidzAXxz7GkEtPkQ==, figureFileBig=wDPY4d7Z2xFtykW/wuT2pA==, tableContent=null), ArticleFig(id=1241687561236706190, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546141405270, language=EN, label=Fig. 9, caption=
Typical PPV curve with delay time in other literatures, figureFileSmall=CYJXRwPic4f/sSDG+n6trQ==, figureFileBig=CrW1zmJfnFEduDD//WZ8aw==, tableContent=null), ArticleFig(id=1241687561354146713, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546141405270, language=CN, label=图9, caption=
其他文献中较典型的PPV随延期时间变化的曲线, figureFileSmall=CYJXRwPic4f/sSDG+n6trQ==, figureFileBig=CrW1zmJfnFEduDD//WZ8aw==, tableContent=null), ArticleFig(id=1241687561429644188, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546141405270, language=EN, label=Table 1, caption=
Blasting parameters
, figureFileSmall=null, figureFileBig=null, tableContent=
| 孔径/mm | 孔深/m | 单孔装药量/kg | 装药结构 | 堵塞长度/m | 孔距/m | 排距/m | 孔数 | 雷管 | 起爆方式 |
|---|
| 120 | 17 | 84 | 耦合装药 | 4 | 6 | 3 | 18 | 电子雷管 | 逐孔起爆 |
), ArticleFig(id=1241687561513530273, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546141405270, language=CN, label=表1, caption=
爆破参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 孔径/mm | 孔深/m | 单孔装药量/kg | 装药结构 | 堵塞长度/m | 孔距/m | 排距/m | 孔数 | 雷管 | 起爆方式 |
|---|
| 120 | 17 | 84 | 耦合装药 | 4 | 6 | 3 | 18 | 电子雷管 | 逐孔起爆 |
), ArticleFig(id=1241687561597416359, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546141405270, language=EN, label=Table 2, caption=
Test results of single hole blasting
, figureFileSmall=null, figureFileBig=null, tableContent=
| 测点编号 | 测点标高/m | 爆心距/m | 方向 | 质点峰值振速/(cm·s-1) | 主频/Hz |
|---|
| 1 | 945 | 531 | x | 0.154 | 29.9 |
| y | 0.173 | 20.2 |
| z | 0.193 | 14.6 |
| 2 | 895 | 202 | x | 0.579 | 39.5 |
| y | 1.192 | 39.5 |
| z | 1.421 | 34.2 |
| 3 | 880 | 164 | x | 1.963 | 39.7 |
| y | 1.507 | 39.7 |
| z | 2.022 | 46.1 |
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单孔爆破振动测试结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 测点编号 | 测点标高/m | 爆心距/m | 方向 | 质点峰值振速/(cm·s-1) | 主频/Hz |
|---|
| 1 | 945 | 531 | x | 0.154 | 29.9 |
| y | 0.173 | 20.2 |
| z | 0.193 | 14.6 |
| 2 | 895 | 202 | x | 0.579 | 39.5 |
| y | 1.192 | 39.5 |
| z | 1.421 | 34.2 |
| 3 | 880 | 164 | x | 1.963 | 39.7 |
| y | 1.507 | 39.7 |
| z | 2.022 | 46.1 |
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