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Article(id=1241409510766596415, tenantId=1146029695717560320, journalId=1240670690148397066, issueId=1241409507583127593, articleNumber=null, orderNo=null, doi=10.3963/j.issn.1001-487X.2024.04.021, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1702828800000, receivedDateStr=2023-12-18, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1773904691640, onlineDateStr=2026-03-19, pubDate=1732982400000, pubDateStr=2024-12-01, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1773904691640, onlineIssueDateStr=2026-03-19, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1773904691640, creator=13701087609, updateTime=1773904691640, 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=167, endPage=173, ext={EN=ArticleExt(id=1241409511332827456, articleId=1241409510766596415, tenantId=1146029695717560320, journalId=1240670690148397066, language=EN, title=Vibration Characteristics of Gas Pipeline near Blasting in Silt-rock Strata, columnId=1240702076553065119, journalTitle=Blasting, columnName=BLASTING SAFETY, runingTitle=null, highlight=null, articleAbstract=

Since uneven stress on the cutter head can easily lead to surface collapse accidents when a shield machine passes through the silt-rock strata, the rock stratum can be blasted and broken by drilling blast holes on the ground surface before the shield machine arrives. However, the seismic waves generated by the blasting would threaten the safe operation of adjacent gas pipelines. In order to study the vibration characteristic of adjacent gas pipelines during blasting in silt-rock strata, the rock breaking project of silt-rock strata in the shield section of Hengqin Station and Hengqin North Station of Zhuhai Metro was selected as the research background. Firstly, the on-site blasting vibration was tested. Then, the ANSYS/LS-DYNA software was used to simulate the blasting process and invert the physical and mechanical parameters of the materials at the blasting site. Finally, the vibration characteristic of the gas pipeline was analyzed. The research results show that the PPV (peak particle velocity) on the pipeline decreases with the increase of the horizontal distance from the explosion source in the axial direction of the gas pipeline. Meanwhile, the maximum PPV position is perpendicular to the center line of the blast holes. Furthermore, the surface PPV above the gas pipeline decreases along the pipeline axis as the horizontal distance from the explosion source increases, and the maximum PPV position is also perpendicular to the center line of the blast holes. Besides, there is a functional relationship between the surface soil PPV2 along the axial direction of the gas pipeline and the PPV1on the outer wall of the gas pipeline, which is V2=0.60V1+1.29. More importantly, the PPV of the gas pipeline's inner and outer of the gas pipeline are basically the same.

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盾构机穿越淤泥-岩石地层时，刀盘受力不均容易导致地表发生塌陷事故，可以在盾构机到达前在地表钻炮孔将岩层爆破破碎，但是爆破产生的地震波威胁邻近燃气管道的安全运行。为了研究淤泥-岩石地层爆破时邻近燃气管道的振动特征，结合珠海地铁横琴站和横琴北站盾构区间淤泥-岩石地层爆破破碎岩石工程，首先测试现场爆破振动，然后采用ANSYS/LS-DYNA软件模拟爆破过程来反演爆破现场材料的物理和力学参数，最后对燃气管道的振动特征进行了分析。得出在燃气管道轴向，管道上PPV（peak particle velocity）基本随着距爆炸源水平距离的增加而减小，最大PPV位置垂直于炮孔中心连心线；在燃气管道正上方地表沿管道轴向上，地表PPV随着距爆炸源水平距离的增加而减小，最大PPV位置也垂直于炮孔中心连心线；沿燃气管道轴向，地表土体PPV2和燃气管道外侧PPV1之间存在函数关系，V2=0.60V1+1.29，其中V2是燃气管道上方地表的PPV2，V1是燃气管道的PPV1；燃气管道内侧和外侧节点振速峰值量值基本一致。

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尹涛（1989-），男，湖北省嘉鱼县，博士、讲师，主要从事爆破工程、岩土动力学研究工作，（E-mail）。

YIN Tao (1989-), male, Jiayu County of Hubei Province, Ph. D, lecturer, mainly engaged in blasting engineering and geotechnical dynamics research, (E-mail) .

, authorsList=尹涛, 吉凌, 郭子如, 周传波, 李洪伟, 郑长青, 何志伟)}, authors=[Author(id=1241409522179297760, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409510766596415, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=1095685591@qq.com, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1241409522309321191, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409510766596415, authorId=1241409522179297760, language=EN, stringName=Tao YIN, firstName=Tao, middleName=null, lastName=YIN, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=1a, 1b, address=1a.School of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan 232001, China
1b.Anhui Engineering Laboratory of Explosive Materials and Technology, Anhui University of Science and Technology, Huainan 232001, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1241409523861213680, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409510766596415, authorId=1241409522179297760, language=CN, stringName=尹涛, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=1a, 1b, address=1a.安徽理工大学　土木建筑学院，淮南　232001
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尹涛（1989-），男，湖北省嘉鱼县，博士、讲师，主要从事爆破工程、岩土动力学研究工作，（E-mail）。

YIN Tao (1989-), male, Jiayu County of Hubei Province, Ph. D, lecturer, mainly engaged in blasting engineering and geotechnical dynamics research, (E-mail) .

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尹涛（1989-），男，湖北省嘉鱼县，博士、讲师，主要从事爆破工程、岩土动力学研究工作，（E-mail）。

YIN Tao (1989-), male, Jiayu County of Hubei Province, Ph. D, lecturer, mainly engaged in blasting engineering and geotechnical dynamics research, (E-mail) .

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(in Chinese), articleTitle=Study on technology of the cofferdam demolition blasting in deep water conditions, refAbstract=null), Reference(id=1241409544019038480, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409510766596415, doi=null, pmid=null, pmcid=null, year=2020, volume=54, issue=11, pageStart=2120, pageEnd=2127, 2137, url=null, language=null, rfNumber=[19], rfOrder=26, authorNames=张玉琦, 蒋楠, 贾永胜, journalName=浙江大学学报(工学版), refType=null, unstructuredReference=张玉琦, 蒋楠, 贾永胜, 等. 运营充水状态高密度聚乙烯管的爆破振动响应特性[J]. 浙江大学学报(工学版), 2020, 54(11): 2120-2127, 2137., articleTitle=运营充水状态高密度聚乙烯管的爆破振动响应特性, refAbstract=null), Reference(id=1241409544136478997, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409510766596415, doi=null, pmid=null, pmcid=null, year=2020, volume=54, issue=11, pageStart=2120, pageEnd=2127, 2137, url=null, language=null, rfNumber=[19], rfOrder=27, authorNames=ZHANG Yu-qi, Jiang Nan, JIA Yong-sheng, journalName=Journal of Zhejiang University (Engineering Science), refType=null, unstructuredReference=ZHANG Yu-qi, Jiang Nan, JIA Yong-sheng, et al. 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Physical and mechanical parameters of rock and silt

, figureFileSmall=null, figureFileBig=null, tableContent=
类别密度/（g·cm-3）弹性模量/（1011 Pa）泊松比纵波速度/（m·s-1）屈服应力/（1011 Pa）切线模量/（1011 Pa）硬化参数应变率参数
岩石2.50.740.2553573.0e-50.0421.00.06
淤泥1.633.3e-50.4512504.0e-90.0——
), ArticleFig(id=1241409534758015974, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409510766596415, language=CN, label=表1, caption=

岩石和淤泥的物理力学参数

, figureFileSmall=null, figureFileBig=null, tableContent=
类别密度/（g·cm-3）弹性模量/（1011 Pa）泊松比纵波速度/（m·s-1）屈服应力/（1011 Pa）切线模量/（1011 Pa）硬化参数应变率参数
岩石2.50.740.2553573.0e-50.0421.00.06
淤泥1.633.3e-50.4512504.0e-90.0——
), ArticleFig(id=1241409534883845101, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409510766596415, language=EN, label=Table 2, caption=

The PPV of the gas pipeline along the axial direction

, figureFileSmall=null, figureFileBig=null, tableContent=
距对称面的距离/m00.601.201.802.403.003.604.204.805.406.00
管道上节点的PPV/（cm·s-1）3.673.683.643.573.473.363.223.092.912.782.57
), ArticleFig(id=1241409535089366001, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409510766596415, language=CN, label=表2, caption=

燃气管道沿轴向的PPV

, figureFileSmall=null, figureFileBig=null, tableContent=
距对称面的距离/m00.601.201.802.403.003.604.204.805.406.00
管道上节点的PPV/（cm·s-1）3.673.683.643.573.473.363.223.092.912.782.57
), ArticleFig(id=1241409535215195126, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409510766596415, language=EN, label=Table 3, caption=

The PPV of the surface above the gas pipeline along the axial direction

, figureFileSmall=null, figureFileBig=null, tableContent=
距对称平面的距离/m00.601.201.802.403.003.604.204.805.406.00
管道正上方地表的PPV/（cm·s-1）3.513.493.473.423.363.303.183.142.933.052.73
), ArticleFig(id=1241409535366190075, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409510766596415, language=CN, label=表3, caption=

燃气管道正上方地表沿轴向的PPV

, figureFileSmall=null, figureFileBig=null, tableContent=
距对称平面的距离/m00.601.201.802.403.003.604.204.805.406.00
管道正上方地表的PPV/（cm·s-1）3.513.493.473.423.363.303.183.142.933.052.73
), ArticleFig(id=1241409535492019200, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409510766596415, language=EN, label=Table 4, caption=

The PPV on the inner wall of the gas pipeline

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燃气管道内壁的PPV/（cm·s-1）3.623.633.683.673.673.633.653.613.593.543.613.60
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燃气管道内壁的PPV

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角度/°0306090120150180210240270300330
燃气管道内壁的PPV/（cm·s-1）3.623.633.683.673.673.633.653.613.593.543.613.60
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The PPV on the outer wall of the gas pipeline

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角度/°0306090120150180210240270300330
燃气管道外壁PPV/（cm·s-1）3.613.633.663.703.643.643.623.673.573.563.613.62
), ArticleFig(id=1241409537463341079, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409510766596415, language=CN, label=表5, caption=

燃气管道外壁的PPV

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角度/°0306090120150180210240270300330
燃气管道外壁PPV/（cm·s-1）3.613.633.663.703.643.643.623.673.573.563.613.62
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PPV on the inner wall and the outer wall of the gas pipeline

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角度/°0306090120150180210240270300330
管道内壁PPV/（cm·s-1）3.623.633.683.673.673.633.653.613.593.543.613.60
管道外壁PPV/（cm·s-1）3.613.633.663.703.643.643.623.673.573.563.613.62
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燃气管道内壁和外壁的PPV

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角度/°0306090120150180210240270300330
管道内壁PPV/（cm·s-1）3.623.633.683.673.673.633.653.613.593.543.613.60
管道外壁PPV/（cm·s-1）3.613.633.663.703.643.643.623.673.573.563.613.62
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淤泥-岩石地层爆破邻近燃气管道振动特征
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尹涛 1a, 1b , 吉凌 1a , 郭子如 1b , 周传波 2 , 李洪伟 1b , 郑长青 3 , 何志伟 1b
爆破 | 安全与管理 2024,41(4): 167-173
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爆破 | 安全与管理 2024, 41(4): 167-173
淤泥-岩石地层爆破邻近燃气管道振动特征
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尹涛1a, 1b , 吉凌1a, 郭子如1b, 周传波2, 李洪伟1b, 郑长青3, 何志伟1b
作者信息
  • 1a.安徽理工大学　土木建筑学院，淮南　232001
  • 1b.安徽理工大学　安徽省爆破器材与技术工程实验室，淮南　232001
  • 2.中国地质大学（武汉）　工程学院，武汉　430074
  • 3.珠海爆破新技术开发有限公司，珠海　519099

    • 尹涛（1989-），男，湖北省嘉鱼县，博士、讲师，主要从事爆破工程、岩土动力学研究工作，（E-mail）。

    YIN Tao (1989-), male, Jiayu County of Hubei Province, Ph. D, lecturer, mainly engaged in blasting engineering and geotechnical dynamics research, (E-mail) .

Vibration Characteristics of Gas Pipeline near Blasting in Silt-rock Strata
Tao YIN1a, 1b , Ling JI1a, Zi-ru GUO1b, Chuan-bo ZHOU2, Hong-wei LI1b, Chang-qing ZHENG3, Zhi-wei HE1b
Affiliations
  • 1a.School of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan 232001, China
  • 1b.Anhui Engineering Laboratory of Explosive Materials and Technology, Anhui University of Science and Technology, Huainan 232001, China
  • 2.Faculty of Engineering, China University of Geosciences (Wuhan), Wuhan 430074, China
  • 3.Zhuhai Baopoxin Research & Development Co., Ltd., Zhuhai 519099, China
出版时间: 2024-12-01 doi: 10.3963/j.issn.1001-487X.2024.04.021
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摘要
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盾构机穿越淤泥-岩石地层时，刀盘受力不均容易导致地表发生塌陷事故，可以在盾构机到达前在地表钻炮孔将岩层爆破破碎，但是爆破产生的地震波威胁邻近燃气管道的安全运行。为了研究淤泥-岩石地层爆破时邻近燃气管道的振动特征，结合珠海地铁横琴站和横琴北站盾构区间淤泥-岩石地层爆破破碎岩石工程，首先测试现场爆破振动，然后采用ANSYS/LS-DYNA软件模拟爆破过程来反演爆破现场材料的物理和力学参数，最后对燃气管道的振动特征进行了分析。得出在燃气管道轴向，管道上PPV（peak particle velocity）基本随着距爆炸源水平距离的增加而减小，最大PPV位置垂直于炮孔中心连心线；在燃气管道正上方地表沿管道轴向上，地表PPV随着距爆炸源水平距离的增加而减小，最大PPV位置也垂直于炮孔中心连心线；沿燃气管道轴向，地表土体PPV2和燃气管道外侧PPV1之间存在函数关系，V2=0.60V1+1.29，其中V2是燃气管道上方地表的PPV2，V1是燃气管道的PPV1；燃气管道内侧和外侧节点振速峰值量值基本一致。

振动特征  /  燃气管道  /  岩石爆破  /  淤泥-岩石地层

Since uneven stress on the cutter head can easily lead to surface collapse accidents when a shield machine passes through the silt-rock strata, the rock stratum can be blasted and broken by drilling blast holes on the ground surface before the shield machine arrives. However, the seismic waves generated by the blasting would threaten the safe operation of adjacent gas pipelines. In order to study the vibration characteristic of adjacent gas pipelines during blasting in silt-rock strata, the rock breaking project of silt-rock strata in the shield section of Hengqin Station and Hengqin North Station of Zhuhai Metro was selected as the research background. Firstly, the on-site blasting vibration was tested. Then, the ANSYS/LS-DYNA software was used to simulate the blasting process and invert the physical and mechanical parameters of the materials at the blasting site. Finally, the vibration characteristic of the gas pipeline was analyzed. The research results show that the PPV (peak particle velocity) on the pipeline decreases with the increase of the horizontal distance from the explosion source in the axial direction of the gas pipeline. Meanwhile, the maximum PPV position is perpendicular to the center line of the blast holes. Furthermore, the surface PPV above the gas pipeline decreases along the pipeline axis as the horizontal distance from the explosion source increases, and the maximum PPV position is also perpendicular to the center line of the blast holes. Besides, there is a functional relationship between the surface soil PPV2 along the axial direction of the gas pipeline and the PPV1on the outer wall of the gas pipeline, which is V2=0.60V1+1.29. More importantly, the PPV of the gas pipeline's inner and outer of the gas pipeline are basically the same.

vibration characteristic  /  gas pipeline  /  rock blasting  /  silt-rock strata
尹涛, 吉凌, 郭子如, 周传波, 李洪伟, 郑长青, 何志伟. 淤泥-岩石地层爆破邻近燃气管道振动特征. 爆破, 2024 , 41 (4) : 167 -173 . DOI: 10.3963/j.issn.1001-487X.2024.04.021
Tao YIN, Ling JI, Zi-ru GUO, Chuan-bo ZHOU, Hong-wei LI, Chang-qing ZHENG, Zhi-wei HE. Vibration Characteristics of Gas Pipeline near Blasting in Silt-rock Strata[J]. Blasting, 2024 , 41 (4) : 167 -173 . DOI: 10.3963/j.issn.1001-487X.2024.04.021
正文
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盾构机开挖隧道时，经常需要穿越淤泥-岩石地层，盾构机刀盘受力不均容易导致地表发生塌陷事故，为了解决这一问题[1,2]，可以预先在地表钻炮孔将岩层爆破破碎，但是爆破产生的振动威胁周围燃气管道的安全运行。很多研究者对爆破荷载作用下燃气管道动力响应特征进行了探索，CHAUDHURI C H等推导出了地下爆炸荷载作用下埋地管道的封闭解析解[3]。ZHU Bin等探索了邻近爆破开挖振动影响下埋地管道振动速度控制标准[4]。王栋等对钻爆法施工中埋地管道动力响应特征进行了研究[5]。王海涛等对地铁隧道钻爆法施工时[6]，探讨了邻近埋地管道动力响应规律。PROVATIDIS CH等为了研究爆破荷载下埋地管道安全运行容许应力[7]，建立了一种考虑P波、SH波和SV波入射的简化模型，得出了管道屈服应力和管道质点峰值振速的对应关系。KOURETZIS G P等提出了一种用于模拟具有径向衰减和球面波传播的方法[8]，分析计算了柔性埋地管道因表面点源爆炸引起的应变。RIGAS F提出了一种用于预测地表爆炸产生的地面冲击波时管道的安全距离和炸药的最大允许量的方法[9]。WON J H等结合现场试验和数值模拟对爆炸荷载作用下多层管道的动力响应进行了研究[10]，建立了多层管道的振动分析模型。结合国内外对爆破地震荷载作用下管道动力响应特征，对淤泥-岩石地层爆破周围燃气管道振动特征研究较少。以淤泥-岩石地层爆破破碎岩石工程为背景，首先现场测试爆破振动，然后采用动力有限元模拟爆破过程，反演爆破现场材料的物理和力学参数，最后对淤泥-岩石地层爆破破碎岩石时周边燃气管道的振动特征进行了研究。研究结果可以为淤泥-岩石地层爆破邻近燃气管道的安全振速提供参考。
1　工程概况
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盾构区间位于珠机城际铁路横琴站和横琴北站之间，盾构机通过淤泥-岩石地层，在盾构机到达之前需要将岩层爆破破碎，工程现场装药及爆破如图1所示。
从地表到盾构区间共有人工填土、淤泥、微分化花岗岩三个地层。每一次起爆三排炮孔，每排炮孔布置13个炮孔，采用孔内微差延时爆破网路，三排炮孔微差段别为6、7、8段，段间延时时间为50 ms。炮孔布置示意图如图2所示。工程现场采用成都中科测控有限公司生产的TC-4850爆破测振仪测量爆破振动，测量爆破振动如图3所示。
2　数值模型和参数验证
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2.1　数值模型
淤泥-岩石地层爆破数值模型是对称的，建立二分之一模型来进行数值模拟，模型如图4所示。模型前表面设置为对称边界，上表面为自由边界，其他表面均为非反射边界。采用三维实体solid164单元进行网格划分[11]，单元长度需要小于爆炸应力波波长的1/10~1/8，综合考虑计算时长，单元最大长度划分为1 m。整个模型共划分成30 272个单元和34 290个节点，炸药和空气使用欧拉算法，其他材料使用拉格朗日算法，使用流固耦合方法计算炸药爆炸作用下燃气管道的振动特征。采用cm-g-μs单位制。
2.2　材料参数
模型中乳化炸药采用*MAT_HIGH_EXPLOSIVE_BURN材料模型[12,13]，岩石和淤泥均采用*MAT_PLASTIC_KINEMATIC材料模型[14,15]，人工填土采用*MAT_DRUCKER_PRAGER材料模型[16]，空气采用*MAT_NULL材料模型爆破工程现场材料模型的物理和力学参数通过实验室测试和数值模拟反演得到[17]。
炸药爆轰的状态方程采用JWL方程
式中：P是压力；A、B、R1、R2、ω是与炸药相关的材料常数；V是相对体积；E0是初始比内能。
炸药密度为1.06 g/cm3，爆速为5000 m/s，A为216.4 GPa，B为0.182 GPa，R1为4.2，R2为0.9，ω为0.15，E0为4.192 GPa。由于炮孔是水耦合装药，乳化炸药性能会受水压的影响[18]，炸药位于34 m的水深处时爆轰压力P为1.98 GPa。
空气密度ρ为1.29×10-3g/cm3，剪切-压缩波速曲线截距c为344 m/s，剪切-压缩波速曲线斜率因数均为0，UNEISEN常数为1.4，初始体积修正因数α为0，初始比内能e0为0。人工填土的密度ρ为1.98 g/cm3，泊松比u为0.35，内聚力为100 kPa，剪切模量为150 MPa，内摩擦角为17.8°。
2.3　数值模拟的可靠性验证
振动监测点#1和2#位于爆源右侧地表30 m和60 m处，见图4。数值模拟结果表明[19]，现场测试振速和数值模拟振速误差在5.88%和19.64%之间，误差小于20%，因此，使用数值模型和材料研究岩石爆破附近燃气管道的振动特征是可行的。图5和图6给出了2#地表监测点水平横向（X）振动速度实测波形及对应点的模拟波形。
3　淤泥-岩石地层爆破数值模型
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建立爆破模型尺寸如图7所示，燃气管道距离爆源X方向的距离为30 m，埋深为200 cm，管道直径30 cm，壁厚2.5 cm，管道是空的，燃气管道采用*MAT_PLASTIC_KINEMATIC材料模型[20]，燃气管道的密度为7.85 g/cm，弹性模量为205 GPa，剪切模量为6 GPa，泊松比为0.3，抗拉强度为235 MPa。模型的其他参数和边界条件均和第2节一致。
4　计算结果分析
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取燃气管道内壁和外壁上节点和单元的位置如图8所示，在燃气管道上每隔30°取一个节点和单元，共选取12个节点和单元。
4.1　燃气管道轴向的PPV
燃气管道沿轴向的PPV如表2和图9所示。
在燃气管道轴向，PPV基本随着距爆炸源水平距离的增加而减小，最大PPV位置垂直于炮孔中心连心线，PPV从3.67 cm/s减小到2.57 cm/s，距爆炸源的水平距离越近，PPV越大。
4.2　燃气管道正上方地表沿燃气管道轴向的PPV
燃气管道正上方地表沿管道轴向的PPV如表3和图10所示。
在燃气管道正上方地表沿管道轴向上，最大PPV位置垂直于炮孔中心连心线，PPV随着距爆炸源水平距离的增加而减小，PPV从3.51 cm/s减小到2.73 cm/s。
4.3　燃气管道PPV与燃气管道正上方地表PPV之间的函数关系
对燃气管道PPV与燃气管道正上方地表PPV之间的关系进行了函数拟合，燃气管道PPV和燃气管道上方地表的PPV之间关系如图11所示。
燃气管道PPV与燃气管道正上方地表PPV之间的函数关系如式（2）所示。
式中：Vp是燃气管道的PPV；Vs是燃气管道正上方地表的PPV。
为保证淤泥-岩石地层爆破时邻近燃气管道的安全，可以对燃气管道的PPV进行测试，但是挖开地表土壤来测试燃气管道的PPV工作量较大，由于燃气管道PPV与燃气管道正上方地表PPV之间存在函数关系，可以在燃气管道正上方地表测量PPV来得到燃气管道PPV。
4.4　燃气管道内壁不同方向的PPV
不同方向上燃气管道内壁的PPV如表4和图12所示。
最大的PPV位于管道内壁60°处，最大PPV为3.68 cm/s；最小的PPV位于管道内壁270°处，最小PPV为3.54 cm/s；最大PPV是最小PPV的1.04倍。
在燃气管道内壁上，PPV在3.54 cm/s和3.68 cm/s之间，但每个节点的PPV彼此不同。爆炸产生的地震波在土壤-燃气管道界面透射和折射，透射燃气管道的波多次反射和折射，导致每个节点的PPV不同。
4.5　燃气管道外壁不同方向的PPV
燃气管道外壁不同方向的PPV如表5和图13所示。
最大的PPV位于燃气管道外壁90°处，最大PPV为3.70 cm/s；最小的PPV位于管道外壁270°处，最小PPV为3.56 cm/s；最大PPV是最小PPV的1.04倍。
在燃气管道外壁上，PPV在3.56 cm/s和3.70 cm/s之间，但每个节点的PPV彼此不同。爆炸产生的地震波在土壤-燃气管道界面透射和折射，透射燃气管道的波多次反射和折射，导致每个节点的PPV不同。
4.6　燃气管道内壁和外壁PPV对比分析
燃气管道内壁和外壁的PPV如表6所示。
由表6可以得出燃气管道内壁的PPV和燃气管道外壁的PPV接近，燃气管道内壁和外壁的PPV大小均变化不大。
5　结论
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以淤泥-岩石地层爆破岩石工程为背景，结合现场振动测试和动力有限元模拟，研究了淤泥-岩石地层爆破邻近燃气管道的振动特征，得出结论如下。
（1）沿燃气管道轴向，管道PPV和燃气管道正上方地表最大PPV位置均垂直于炮孔中心连心线，随着距爆炸源水平距离的增加而减小。
（2）地表土体质点峰值振速PPV2和燃气管道外侧质点峰值振速PPV1之间的函数关系为：V2=0.60V1+1.29；其中V2是燃气管道上方地表的PPV2，V1是燃气管道的PPV1。
（3）燃气管道内壁PPV彼此不同但大小相差不大，燃气管道外壁PPV彼此不同但大小也相差不大，燃气管道内侧和外侧节点振速峰值量值基本一致。
基金
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  • 安徽理工大学青年基金(QNYB2021-01)
  • 国家自然科学基金(41972286)
  • 安徽理工大学人才引进基金(1319020813220458)
  • 安徽理工大学安徽省爆破器材与技术工程实验室(AHBP2022B-05)
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2024年第41卷第4期
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文章信息
doi: 10.3963/j.issn.1001-487X.2024.04.021
  • 接收时间：2023-12-18
  • 首发时间：2026-03-19
  • 出版时间：2024-12-01
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  • 收稿日期：2023-12-18
基金
This study was sponsored by the Youth Fund, Anhui University of Science and Technology(QNYB2021-01)
安徽理工大学青年基金(QNYB2021-01)
National Natural Science Foundation of China(41972286)
国家自然科学基金(41972286)
Fund for Talent Introduction, Anhui University of Science and Technology(1319020813220458)
安徽理工大学人才引进基金(1319020813220458)
Anhui Engineering Laboratory of Explosive Materials and Technology, Anhui University of Science and Technology(AHBP2022B-05)
安徽理工大学安徽省爆破器材与技术工程实验室(AHBP2022B-05)
作者信息
    1a.安徽理工大学　土木建筑学院，淮南　232001
    1b.安徽理工大学　安徽省爆破器材与技术工程实验室，淮南　232001
    2.中国地质大学（武汉）　工程学院，武汉　430074
    3.珠海爆破新技术开发有限公司，珠海　519099
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2种不同金属材料的力学参数
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
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