Article(id=1241769332804489464, tenantId=1146029695717560320, journalId=1240670690148397066, issueId=1241769329201578292, articleNumber=null, orderNo=null, doi=10.3963/j.issn.1001-487X.2024.01.017, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1681574400000, receivedDateStr=2023-04-16, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1773990479899, onlineDateStr=2026-03-20, pubDate=1709222400000, pubDateStr=2024-03-01, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1773990479899, onlineIssueDateStr=2026-03-20, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1773990479899, creator=13701087609, updateTime=1773990479899, updator=13701087609, issue=Issue{id=1241769329201578292, tenantId=1146029695717560320, journalId=1240670690148397066, year='2024', volume='41', issue='1', pageStart='1', pageEnd='220', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1773990479040, creator=13701087609, updateTime=1773992264087, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1241776816298459159, tenantId=1146029695717560320, journalId=1240670690148397066, issueId=1241769329201578292, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1241776816298459160, tenantId=1146029695717560320, journalId=1240670690148397066, issueId=1241769329201578292, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=120, endPage=126, ext={EN=ArticleExt(id=1241769335337849177, articleId=1241769332804489464, tenantId=1146029695717560320, journalId=1240670690148397066, language=EN, title=Blasting Demolition of 180 m Chimney with Herringbone Lining in Complex Environment, columnId=1240702072073548400, journalTitle=Blasting, columnName=EXPLOSIVE DEMOLITION, runingTitle=null, highlight=null, articleAbstract=
Aiming at the blasting demolition problems of a 180 m reinforced concrete chimney in Wuhan Iron and Steel plant, which contains a herringbone large volume lining and an adjacent gas pipe, the feasibility of the optimization scheme of “digging large arched guide window and raising blasting incision” was demonstrated by the ANSYS/LS-DYNA finite element software. The calculation results show that the collapse and accumulation speed of the inner lining is obviously greater than the closing speed of the blasting incision after it is generated. Meanwhile, the chimney may not be topple over under the influence of the accumulation body by using a general directional dumping scheme. However, the chimney will collapse by raising the height of blasting incision to 5.6 m and digging a large arched guide window which is 6.09 m wide and 8 m high. In addition, to ensure a good effect of blasting demolition, the auxiliary measures of mechanically removing the lining around the blasting incision and covering the surface of the blasting incision and gas pipeline with flexible protective layers composed of safety nets, barbed wires, geogrids and other composite materials were put forward. The actual demolition blasting results show that the chimney collapse process is smooth after the incision detonation, and the numerical simulation results are in good agreement with the actual situation. At the same time, the gap between the chimney root cylinder wall and the ground is filled with the accumulated objects after the collapse, and there is no damage to the adjacent gas pipe. Besides, the excavation of the oversized arched guide window not only realizes the relief of the accumulation materials, but also greatly reduces the workload of charging and protection.
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CHEN De-zhi (1970-), male, professor of engineering, doctoral degree, mainly engaged in blasting engineering and R&D of blasting technology, (E-mail)
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针对武汉钢铁厂二烧180 m钢筋混凝土烟囱具有内含人字墙、大体积内衬及临近煤气管道的爆破拆除难题,采用ANSYS/LS-DYNA有限元软件论证了“开凿超大拱形导向窗,提高爆破切口”优化方案的可行性。计算结果表明:爆破切口产生后,内衬的垮塌堆积速度明显大于爆破切口的闭合速度。采用一般定向倾倒方案时,烟囱在堆积体的影响下有炸而不倒的风险。而将爆破切口高度提高至5.6 m,同时开凿6.09 m宽、8 m高的超大拱形导向窗的方案能够确保烟囱整体倒塌。此外,为确保拆除爆破良好,提出了采用机械清除爆破切口周边内衬,并在爆破切口及煤气管道表面覆盖由安全网、铁丝网、土工格栅等多种复合材料组成的柔性防护层的辅助措施。实际拆除爆破结果表明:切口起爆后烟囱倒塌过程平稳顺利,数值模拟结果与实际情况较为吻合,且倒塌后烟囱根部筒壁与地面间空隙被堆积物体完全填充,临近煤气管道未出现损害。此外,开凿超大拱形导向窗不仅实现了对砌体堆积的疏导,还能够大大减少装药、防护工作量,该优化方案可为类似烟囱的爆破拆除提供参考。
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袁方(1998-),男,硕士研究生,从事爆破技术研究,(E-mail)1290010113@qq.com。
YUAN Fang (1998-), male, master degree candidate, engaged in research on blasting technology, (E-mail) 1290010113@qq.com.
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1, address=
1.State Key Laboratory of Precision Blasting, Jianghan University, Wuhan 430056, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1241769341084045989, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241769332804489464, authorId=1241769340605895296, language=CN, stringName=袁方, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1.江汉大学 精细爆破国家重点实验室,武汉 430056, bio={"content":"
袁方(1998-),男,硕士研究生,从事爆破技术研究,(E-mail)1290010113@qq.com。
YUAN Fang (1998-), male, master degree candidate, engaged in research on blasting technology, (E-mail) 1290010113@qq.com.
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袁方(1998-),男,硕士研究生,从事爆破技术研究,(E-mail)1290010113@qq.com。
YUAN Fang (1998-), male, master degree candidate, engaged in research on blasting technology, (E-mail) 1290010113@qq.com.
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1.State Key Laboratory of Precision Blasting, Jianghan University, Wuhan 430056, China
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1.江汉大学 精细爆破国家重点实验室,武汉 430056
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3.Wuhan Explosion and Blasting Co., Ltd., Wuhan 430056, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1241769343353164534, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241769332804489464, authorId=1241769343063757538, language=CN, stringName=王威, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1.State Key Laboratory of Precision Blasting, Jianghan University, Wuhan 430056, China
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1.江汉大学 精细爆破国家重点实验室,武汉 430056
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3.武汉爆破有限公司,武汉 430056)])]), Author(id=1241769344150082356, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241769332804489464, orderNo=5, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1241769344284300095, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241769332804489464, authorId=1241769344150082356, language=EN, stringName=Kun YANG, firstName=Kun, middleName=null, lastName=YANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1.江汉大学 精细爆破国家重点实验室,武汉 430056, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1241769339855114813, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241769332804489464, xref=1., ext=[AuthorCompanyExt(id=1241769339863503422, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241769332804489464, companyId=1241769339855114813, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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2b, address=
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2b.School of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, China), AuthorCompanyExt(id=1241769340312293985, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241769332804489464, companyId=1241769340165493342, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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42(8): 160-174. (in Chinese), articleTitle=Lowering and early fracture prediction of blasting demolition of reinforced concrete chimneys, refAbstract=null)], funds=[Fund(id=1241769349749477495, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241769332804489464, awardId=2020BCA084, language=EN, fundingSource=Hubei Province Key R&D Program(2020BCA084), fundOrder=null, country=null), Fund(id=1241769349954998395, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241769332804489464, awardId=2020BCA084, language=CN, fundingSource=湖北省重点研发计划项目(2020BCA084), fundOrder=null, country=null), Fund(id=1241769350085021827, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241769332804489464, awardId=2021CFB541, language=EN, fundingSource=Natural Science Foundation of Hubei Province(2021CFB541), fundOrder=null, country=null), Fund(id=1241769350210850955, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241769332804489464, awardId=2021CFB541, language=CN, fundingSource=湖北省自然科学基金面上项目(2021CFB541), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1241769339855114813, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241769332804489464, xref=1., ext=[AuthorCompanyExt(id=1241769339863503422, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241769332804489464, companyId=1241769339855114813, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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Surrounding environment of chimney to be demolished, figureFileSmall=Jqnx+73E/udT7qSN2IKthQ==, figureFileBig=V+ETZ/YOumnDZxbMgjP6lQ==, tableContent=null), ArticleFig(id=1241769345706169256, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241769332804489464, language=CN, label=图1, caption=
待拆除烟囱周边环境, figureFileSmall=Jqnx+73E/udT7qSN2IKthQ==, figureFileBig=V+ETZ/YOumnDZxbMgjP6lQ==, tableContent=null), ArticleFig(id=1241769347572634568, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241769332804489464, language=EN, label=Fig. 2, caption=
Numerical simulation results of the collapse process, figureFileSmall=V58L+oABT4S/FCqYWUWVvg==, figureFileBig=CUZaFT0GStSDJGOb3TxCqA==, tableContent=null), ArticleFig(id=1241769347702658005, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241769332804489464, language=CN, label=图2, caption=
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Diagram of cut layout (unit: m), figureFileSmall=n9VDLxnL126SKY867VtZSg==, figureFileBig=qt4uWIDLLhliUsjnB7O4OQ==, tableContent=null), ArticleFig(id=1241769347929150442, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241769332804489464, language=CN, label=图3, caption=
爆破切口示意图(单位:m), figureFileSmall=n9VDLxnL126SKY867VtZSg==, figureFileBig=qt4uWIDLLhliUsjnB7O4OQ==, tableContent=null), ArticleFig(id=1241769348017230838, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241769332804489464, language=EN, label=Fig. 4, caption=
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Velocity and displacement time-history curves of chimney outer wall, figureFileSmall=uZ/jvHB/sGhKE8LTewhK2w==, figureFileBig=K0BDSoO1XJ/zRk6dm61eVA==, tableContent=null), ArticleFig(id=1241769348394717202, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241769332804489464, language=CN, label=图5, caption=
烟囱外壁速度、位移时程曲线, figureFileSmall=uZ/jvHB/sGhKE8LTewhK2w==, figureFileBig=K0BDSoO1XJ/zRk6dm61eVA==, tableContent=null), ArticleFig(id=1241769348558295071, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241769332804489464, language=EN, label=Fig. 6, caption=
Chimney lining displacement time history curve, figureFileSmall=2qqzai7w/Y4OWLTLabS+SQ==, figureFileBig=0T5aDkfoZ0mda1+xQ/LV0A==, tableContent=null), ArticleFig(id=1241769348654764069, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241769332804489464, language=CN, label=图6, caption=
烟囱内衬位移时程曲线, figureFileSmall=2qqzai7w/Y4OWLTLabS+SQ==, figureFileBig=0T5aDkfoZ0mda1+xQ/LV0A==, tableContent=null), ArticleFig(id=1241769348768010287, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241769332804489464, language=EN, label=Fig. 7, caption=
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烟囱数值模拟与实际倒塌过程, figureFileSmall=rldKIWb2ryPgxV7QF5WDvA==, figureFileBig=UW8Qt8G+k4m4syapy4aYDQ==, tableContent=null), ArticleFig(id=1241769348977725502, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241769332804489464, language=EN, label=Fig. 8, caption=
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Blasting design parameters
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| 爆破拆除方案 | 切口形状 | 切口圆心角 | 切口高度 | 定向窗 | 导向窗 | 内衬及人字墙处理 |
|---|
| 通常方案 | 正梯形 | 215° | 4.50 m | 直角三角形 | 无 | 预处理部分与爆破切口同时删除 |
| 改进方案 | 正梯形 | 215° | 5.60 m | 直角三角形 | 8 m高超大拱形导向窗 | 预处理部分与爆破切口同时删除 |
), ArticleFig(id=1241769349330047063, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241769332804489464, language=CN, label=表1, caption=
爆破参数设计
, figureFileSmall=null, figureFileBig=null, tableContent=
| 爆破拆除方案 | 切口形状 | 切口圆心角 | 切口高度 | 定向窗 | 导向窗 | 内衬及人字墙处理 |
|---|
| 通常方案 | 正梯形 | 215° | 4.50 m | 直角三角形 | 无 | 预处理部分与爆破切口同时删除 |
| 改进方案 | 正梯形 | 215° | 5.60 m | 直角三角形 | 8 m高超大拱形导向窗 | 预处理部分与爆破切口同时删除 |
), ArticleFig(id=1241769349439098978, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241769332804489464, language=EN, label=Table 2, caption=
Blasting design parameters
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| 炮孔位置 | 壁厚/m | 孔深/m | 孔距/m | 排距/m | 孔数 | 单孔装药量/g | 单耗/(kg·m-3) | 总装药量/kg |
|---|
| 1~3排 | 0.60 | 0.43 | 0.50 | 0.40 | 120 | 250 | 2.08 | 30.00 |
| 4~9排 | 0.60 | 0.45 | 0.50 | 0.40 | 232 | 300 | 2.50 | 69.60 |
| 10~15排 | 0.60 | 0.40 | 0.50 | 0.40 | 134 | 200 | 1.67 | 26.80 |
| 人字墙 | 0.35 | 0.23 | 0.30 | 0.20 | 48 | 150 | / | 7.20 |
), ArticleFig(id=1241769349590093929, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241769332804489464, language=CN, label=表2, caption=
爆破参数设计
, figureFileSmall=null, figureFileBig=null, tableContent=
| 炮孔位置 | 壁厚/m | 孔深/m | 孔距/m | 排距/m | 孔数 | 单孔装药量/g | 单耗/(kg·m-3) | 总装药量/kg |
|---|
| 1~3排 | 0.60 | 0.43 | 0.50 | 0.40 | 120 | 250 | 2.08 | 30.00 |
| 4~9排 | 0.60 | 0.45 | 0.50 | 0.40 | 232 | 300 | 2.50 | 69.60 |
| 10~15排 | 0.60 | 0.40 | 0.50 | 0.40 | 134 | 200 | 1.67 | 26.80 |
| 人字墙 | 0.35 | 0.23 | 0.30 | 0.20 | 48 | 150 | / | 7.20 |
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