Article(id=1240702080361493264, tenantId=1146029695717560320, journalId=1240670690148397066, issueId=1240702069502440044, articleNumber=null, orderNo=null, doi=10.3963/j.issn.1001-487X.2025.03.021, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1734969600000, receivedDateStr=2024-12-24, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1773736027088, onlineDateStr=2026-03-17, pubDate=1744128000000, pubDateStr=2025-04-09, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1773736027088, onlineIssueDateStr=2026-03-17, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1773736027088, creator=13701087609, updateTime=1773736027088, 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=184, endPage=193, ext={EN=ArticleExt(id=1240702080734786333, articleId=1240702080361493264, tenantId=1146029695717560320, journalId=1240670690148397066, language=EN, title=Study of Effect of Length-to-diameter Ratio on Overpressure Impulse Characteristics of Methane/Air Premixed Explosion, columnId=1240702076553065119, journalTitle=Blasting, columnName=BLASTING SAFETY, runingTitle=null, highlight=null, articleAbstract=
The study aims to investigate the explosion characteristics of methane/air premixed gas across various temperatures and ignition positions. Under winter and summer conditions, respectively, using a custom-designed methane/air premixed gas explosion test apparatus, tests are conducted with different aspect ratios for a variety of concentrations of methane/air premixed gas explosion test, systematically analyzes the influence of temperature, aspect ratio, and concentration of the premixed gas explosion on the overpressure peak and impulse characteristics of explosions. Furthermore, by utilizing magnitude analysis methods and data fitting techniques, the study identifies the primary factors influencing these overpressure peak and impulse characteristics, and proposes a corresponding approach. In conjunction with the process of magnitude analysis and data fitting, the main factors affecting the overpressure peak and impulse characteristics were systematically analyzed, leading to the development of prediction formulas for the overpressure peak and impulse of methane/air premixed gases. The results indicate that: (1) the trends of peak overpressure and impulse in relation to increasing L/D ratio are generally similar for a specific gas concentration. However, these trends differ between winter and summer temperatures. Specifically, at a gas concentration of 7.5%, both peak overpressure and impulse initially decreased, then increased, and subsequently decreased again under winter temperature conditions, while they continued to decline under summer temperatures. For gas concentrations of 9.5%, 11.5%, and 13.5%, both peak overpressure and impulse consistently showed a decline in both winter and summer temperature conditions. (2) The relationship equations for peak overpressure and impulse, concerning the L/D ratio and methane/air premixed concentration, were established using magnitude analysis and data fitting under winter temperature conditions. The theoretical data were compared with the experimental results to verify that the errors were within 15%. The overall data match well, which verifies its reliability, and can express the decay law of overpressure and impulse with the L/D ratio and gas concentration more intuitively, thereby facilitating the rapid prediction of overpressure peaks and impulses.
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YANG Xiao-lin (1963-), male, Shaodong City, Hunan Province, Ph.D, professor, doctoral supervisor, engaged in tunneling and underground engineering, (E-mail)
yangxl@hpu.edu.cn.
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为研究不同温度及点火位置下甲烷/空气预混气体爆炸特性,在冬季和夏季条件下分别通过自主设计的甲烷/空气预混气体爆炸试验装置,开展不同长径比对多种浓度的甲烷/空气预混气体泄爆试验,系统分析了温度、长径比及浓度对预混气体爆炸的超压峰值和冲量特性产生的影响,并结合量纲分析法和数据拟合,分别分析了对超压峰值和冲量特性的主要影响因素,提出了甲烷/空气预混气体超压峰值和冲量的预测公式。研究结果表明:(1)在特定的气体浓度下超压峰值和冲量随长径比增加的变化趋势基本一致,但冬季温度条件下气体浓度7.5%时超压峰值和冲量先下降后上升再下降,而夏季温度则持续下降;冬夏季温度条件下9.5%、11.5%和13.5%时超压峰值和冲量持续下降;(2)采用量纲分析法和数据拟合,建立冬季温度条件下超压峰值与冲量关于长径比和甲烷/空气预混浓度的关系式,并将理论数据与试验结果进行对比验证,误差在15%以内,总体数据吻合度较高,验证了其可靠性,能够更直观地表达超压与冲量随长径比和气体浓度的衰减规律,实现对超压峰值、冲量的快速预测。
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程建华(1976-),男,河南开封人,硕士、副教授,主要从事安全技术与防护研究,(E-mail)cheng15@hpu.edu.cn。
CHENG Jian-hua (1976-), male, people form Kaifeng, Henan, mainly engaged in safety tehnology and protection research, (E-mail) cheng15@hpu.edu.cn.
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1.School of Civil Engineering, Henan Polytechnic University, Jiaozuo 454003, China
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程建华(1976-),男,河南开封人,硕士、副教授,主要从事安全技术与防护研究,(E-mail)cheng15@hpu.edu.cn。
CHENG Jian-hua (1976-), male, people form Kaifeng, Henan, mainly engaged in safety tehnology and protection research, (E-mail) cheng15@hpu.edu.cn.
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程建华(1976-),男,河南开封人,硕士、副教授,主要从事安全技术与防护研究,(E-mail)cheng15@hpu.edu.cn。
CHENG Jian-hua (1976-), male, people form Kaifeng, Henan, mainly engaged in safety tehnology and protection research, (E-mail) cheng15@hpu.edu.cn.
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1.School of Civil Engineering, Henan Polytechnic University, Jiaozuo 454003, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1240702090260050177, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702080361493264, authorId=1240702090025169135, language=CN, stringName=翁应康, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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2024(6): 84-88. (in Chinese), articleTitle=Study on the ground vibration velocity test of shallow-buried explosive explosion based on dimensional analysis, refAbstract=null)], funds=[Fund(id=1240702096027218410, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702080361493264, awardId=U23A20600, language=EN, fundingSource=Key Project of National Natural Science Foundation of China(U23A20600), fundOrder=null, country=null), Fund(id=1240702096102715888, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702080361493264, awardId=U23A20600, language=CN, fundingSource=国家自然科学基金重点项目(U23A20600), fundOrder=null, country=null), Fund(id=1240702096169824756, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702080361493264, awardId=52178388, language=EN, fundingSource=Grants-in-Aid of National Natural Science Foundation of China(52178388), fundOrder=null, country=null), Fund(id=1240702096245322232, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702080361493264, awardId=52178388, language=CN, fundingSource=国家自然科学基金资助项目(52178388), fundOrder=null, country=null), Fund(id=1240702096350179838, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702080361493264, awardId=H22-541, language=EN, fundingSource=Major Scientific Research Projects Entrusted by Enterprises(H22-541), fundOrder=null, country=null), Fund(id=1240702096425677313, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702080361493264, awardId=H22-541, language=CN, fundingSource=企业委托重大科研项目(H22-541), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1240702087131099249, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702080361493264, xref=1., ext=[AuthorCompanyExt(id=1240702087135293555, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702080361493264, companyId=1240702087131099249, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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Diagram of the test setup, figureFileSmall=JXDyZUDOh0EsFyYQDPeEsw==, figureFileBig=RXfEWoynXE4kqDqeLMezDQ==, tableContent=null), ArticleFig(id=1240702091983909225, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702080361493264, language=CN, label=图1, caption=
试验装置图, figureFileSmall=JXDyZUDOh0EsFyYQDPeEsw==, figureFileBig=RXfEWoynXE4kqDqeLMezDQ==, tableContent=null), ArticleFig(id=1240702092197818741, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702080361493264, language=EN, label=Fig. 2, caption=
Diagram of the explosion venting test platform, figureFileSmall=Kk/rqKmPOfXIQQWlji3kKQ==, figureFileBig=jeuT1lZPvtk9SkYD/ymViA==, tableContent=null), ArticleFig(id=1240702092298482043, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702080361493264, language=CN, label=图2, caption=
泄爆试验平台图, figureFileSmall=Kk/rqKmPOfXIQQWlji3kKQ==, figureFileBig=jeuT1lZPvtk9SkYD/ymViA==, tableContent=null), ArticleFig(id=1240702092399145342, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702080361493264, language=EN, label=Fig. 3, caption=
Pressure waveform graph, figureFileSmall=fqpGVxlrwuP/VK5j+d3Hhw==, figureFileBig=QLvOCVMZc/Xq/0epvlSnDw==, tableContent=null), ArticleFig(id=1240702092512391558, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702080361493264, language=CN, label=图3, caption=
压力波形曲线图, figureFileSmall=fqpGVxlrwuP/VK5j+d3Hhw==, figureFileBig=QLvOCVMZc/Xq/0epvlSnDw==, tableContent=null), ArticleFig(id=1240702093988786570, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702080361493264, language=EN, label=Fig. 4, caption=
Histogram of overpressure peak-to-length-diameter ratio change, figureFileSmall=EEcJ686lbl/jEdcKlA+AMw==, figureFileBig=offk2fD1C1Nx+FL3j3/dXw==, tableContent=null), ArticleFig(id=1240702094076866961, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702080361493264, language=CN, label=图4, caption=
超压峰值-长径比变化柱形图, figureFileSmall=EEcJ686lbl/jEdcKlA+AMw==, figureFileBig=offk2fD1C1Nx+FL3j3/dXw==, tableContent=null), ArticleFig(id=1240702094181724564, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702080361493264, language=EN, label=Fig. 5, caption=
Plot of flushing volume at 7.5% concentration,duration of positive pressure-change in L/D ratio, figureFileSmall=prpifztWaIqhjzM+zp6Yow==, figureFileBig=Abq8jsu85piMJKFsE8rugg==, tableContent=null), ArticleFig(id=1240702094282387863, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702080361493264, language=CN, label=图5, caption=
7.5%浓度下冲量、正压持续时间-长径比变化图, figureFileSmall=prpifztWaIqhjzM+zp6Yow==, figureFileBig=Abq8jsu85piMJKFsE8rugg==, tableContent=null), ArticleFig(id=1240702094353691035, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702080361493264, language=EN, label=Fig. 6, caption=
Histogram of impulse-to-diameter ratio at 9.5%,11.5%,and 13.5% concentrations, figureFileSmall=twEoc0x0OXbi/xRF1BUO2w==, figureFileBig=chB0w0jsThShYjPuAOCJqQ==, tableContent=null), ArticleFig(id=1240702094550823328, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702080361493264, language=CN, label=图6, caption=
9.5%、11.5%、13.5%浓度下冲量-长径比变化柱形图, figureFileSmall=twEoc0x0OXbi/xRF1BUO2w==, figureFileBig=chB0w0jsThShYjPuAOCJqQ==, tableContent=null), ArticleFig(id=1240702094630515107, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702080361493264, language=EN, label=Fig. 7, caption=
Histogram of positive pressure duration-to-diameter ratio at 9.5%,11.5%,and 13.5% concentrations, figureFileSmall=uHGW2/KbpEopRy7geAf3Pg==, figureFileBig=vOD6uXa4D5MhQLEI5RMicQ==, tableContent=null), ArticleFig(id=1240702094735372712, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702080361493264, language=CN, label=图7, caption=
9.5%、11.5%、13.5%浓度下正压持续时间-长径比变化柱形图, figureFileSmall=uHGW2/KbpEopRy7geAf3Pg==, figureFileBig=vOD6uXa4D5MhQLEI5RMicQ==, tableContent=null), ArticleFig(id=1240702094840230315, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702080361493264, language=EN, label=Fig. 8, caption=
Change curve of peak overpressure at winter and summer temperatures, figureFileSmall=kN0XaB8ImMW2gXxomOU6TA==, figureFileBig=cU4bDnearOUNy0TWwug+mg==, tableContent=null), ArticleFig(id=1240702094949282223, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702080361493264, language=CN, label=图8, caption=
冬夏季温度下超压峰值变化曲线, figureFileSmall=kN0XaB8ImMW2gXxomOU6TA==, figureFileBig=cU4bDnearOUNy0TWwug+mg==, tableContent=null), ArticleFig(id=1240702095062528438, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702080361493264, language=EN, label=Fig. 9, caption=
Impulse curves in winter and summer, figureFileSmall=vUrsOyqXb+LECAijuRt9mQ==, figureFileBig=uAj7gDTv9GHU2Jyv2S5Eiw==, tableContent=null), ArticleFig(id=1240702095138025911, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702080361493264, language=CN, label=图9, caption=
冬夏季温度下冲量变化曲线, figureFileSmall=vUrsOyqXb+LECAijuRt9mQ==, figureFileBig=uAj7gDTv9GHU2Jyv2S5Eiw==, tableContent=null), ArticleFig(id=1240702095192551866, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702080361493264, language=EN, label=Fig. 10, caption=
Duration curve of positive pressure in winter and summer, figureFileSmall=vNK8qi/YG5ftlk+NuWDHyg==, figureFileBig=Sk0k7xr94HM0BK9orzIYZg==, tableContent=null), ArticleFig(id=1240702095255466429, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702080361493264, language=CN, label=图10, caption=
冬夏季温度下正压持续时间变化曲线, figureFileSmall=vNK8qi/YG5ftlk+NuWDHyg==, figureFileBig=Sk0k7xr94HM0BK9orzIYZg==, tableContent=null), ArticleFig(id=1240702095347741121, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702080361493264, language=EN, label=Fig. 11, caption=
Peak overpressure and impulse fitting surfaces, figureFileSmall=BMjANxobGx5SlLMnYKQGfQ==, figureFileBig=XBoa+Fczla+v1C9puuG5NQ==, tableContent=null), ArticleFig(id=1240702095440015815, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702080361493264, language=CN, label=图11, caption=
超压峰值和冲量拟合曲面, figureFileSmall=BMjANxobGx5SlLMnYKQGfQ==, figureFileBig=XBoa+Fczla+v1C9puuG5NQ==, tableContent=null), ArticleFig(id=1240702095523901899, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702080361493264, language=EN, label=Fig. 12, caption=
Comparison of peak overpressure at various concentrations, figureFileSmall=bh88C0L+UFi3GPuZAyeatw==, figureFileBig=UK2JuH70Zg2amWtYURX2hQ==, tableContent=null), ArticleFig(id=1240702095628759503, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702080361493264, language=CN, label=图12, caption=
多种浓度下超压峰值对比图, figureFileSmall=bh88C0L+UFi3GPuZAyeatw==, figureFileBig=UK2JuH70Zg2amWtYURX2hQ==, tableContent=null), ArticleFig(id=1240702095708451283, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702080361493264, language=EN, label=Fig. 13, caption=
Comparison of impulse at multiple concentrations, figureFileSmall=l1c10Ut+eCqUdTT1JSNxcg==, figureFileBig=pKZozX+8vKHeWdEgrsU/yw==, tableContent=null), ArticleFig(id=1240702095771365848, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702080361493264, language=CN, label=图13, caption=
多种浓度下冲量对比图, figureFileSmall=l1c10Ut+eCqUdTT1JSNxcg==, figureFileBig=pKZozX+8vKHeWdEgrsU/yw==, tableContent=null), ArticleFig(id=1240702095838474717, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702080361493264, language=EN, label=Table 1, caption=
L/D ratio corresponding to ignition distance in the test
, figureFileSmall=null, figureFileBig=null, tableContent=
| 点火距离L Ignition distance/m | 长径比Aspect ratio ε |
|---|
| 0.4 | 3.73 |
| 1.0 | 9.34 |
| 1.6 | 14.95 |
| 1.9 | 17.75 |
), ArticleFig(id=1240702095922360803, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1240702080361493264, language=CN, label=表1, caption=
试验中点火距离对应的长径比
, figureFileSmall=null, figureFileBig=null, tableContent=
| 点火距离L Ignition distance/m | 长径比Aspect ratio ε |
|---|
| 0.4 | 3.73 |
| 1.0 | 9.34 |
| 1.6 | 14.95 |
| 1.9 | 17.75 |
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