Article(id=1241687546439200868, tenantId=1146029695717560320, journalId=1240670690148397066, issueId=1241687532522492319, articleNumber=null, orderNo=null, doi=10.3963/j.issn.1001-487X.2023.03.013, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1665072000000, receivedDateStr=2022-10-07, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1773970980509, onlineDateStr=2026-03-20, pubDate=1693497600000, pubDateStr=2023-09-01, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1773970980509, onlineIssueDateStr=2026-03-20, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1773970980509, creator=13701087609, updateTime=1773970980509, 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=92, endPage=100, ext={EN=ArticleExt(id=1241687546745385079, articleId=1241687546439200868, tenantId=1146029695717560320, journalId=1240670690148397066, language=EN, title=Simulation of Rock Fracture Process and Fragmentation Analysis with Different Short Delays for Group Hole Blasting, columnId=1240702072862069231, journalTitle=Blasting, columnName=BLASTING IN ORE AND ROCK, runingTitle=null, highlight=null, articleAbstract=
As the main index to evaluate the blasting effect, the rock blasting fragmentation directly affects the subsequent construction objectives and construction costs of water conservancy and hydropower projects. In the process of quarry blasting, it is of great significance to improve the blasting efficiency and quality and meet the demand of good grading curve for the dam aggregates in the construction of water conservancy and hydropower projects. The influence of the number of free surfaces and the delay interval between holes on the rock blasting effect is studied by establishing a two-dimensional finite element numerical model. Firstly, the interaction of stress waves between holes and the reflection mechanism of explosion stress waves on free surfaces are explained theoretically. The conditions for the generation of blasting cracks are also analyzed. Then, with the help of ANSYS/LS-DYNA finite element software, RHT model is used to simulate the rock fracture process under different number of free surfaces and different delay times between holes, and WipFrag is used to analyze the rock grading under different blasting conditions. The numerical simulation results show that the influence of different number of free surfaces on blasting grading is obvious. Compared with no free surfaces, the maximum bulk yields of single free surface, two free surfaces and three free surfaces decreases by 25.9%, 46.5% and 61.8%, respectively. It can be seen that the more the number of free surfaces, the more cracks produced in the rock, the better the blasting fragmentation effect. Compared with simultaneous initiation, delayed blasting is beneficial to improve the rock fragmentation effect, but the interaction between stress waves and holes is not obvious in short delayed blasting.
, correspAuthors=null, authorNote=null, correspAuthorsNote=
FAN Yong (1988-), male, associate professor, doctoral supervisor, mainly engaged in the teaching and research of hydraulic rock mechanics and engineering blasting, (E-mail)
yfan@ctgu.edu.cn.
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岩石爆破块度作为评价爆破效果的主要指标,直接影响到水利水电工程后续的建设目标和建设成本。在工程爆破开采石料过程中,提高爆破效率和质量,满足良好的级配曲线需求,对水利水电工程建设筑坝骨料的开采具有重要意义。通过建立二维有限元数值计算模型,开展了自由面数量和孔间不同延迟时间对岩石爆破破碎效果影响的研究。首先从理论角度阐明了孔间应力波的相互作用和爆炸应力波在自由面的反射机理,分析了爆破裂纹产生的条件;然后借助ANSYS/LS-DYNA有限元软件,采用RHT模型模拟了不同数量自由面、不同孔间延迟时间条件下群孔起爆岩石破裂过程,并采用WipFrag分析了不同起爆条件下的岩石级配情况。数值模拟结果表明:不同数量自由面对爆破级配的影响明显,与无自由面相比,单个自由面、两个自由面、三个自由面的最大块度分别减小了25.9%、46.5%和61.8%,其他块度指标也明显减少,可见自由面数量越多,岩石中产生的裂纹数量越多,爆破破碎效果越好。与同时起爆相比,延迟爆破有利于提高岩石的破碎效果,但在短延迟爆破中应力波在孔间相互作用对提高岩石的破碎效果并不明显。
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赵毅波(1999-),男,硕士研究生,主要从事水工岩石力学与工程爆破研究,(E-mail)2161253439@qq.com。
ZHAO Yi-bo (1999-), male, postgraduate student, mainly engaged in hydraulic rock mechanics and engineering blasting research, (E-mail) 2161253439@qq.com.
, authorsList=赵毅波, 苏都都, 范勇, 杨广栋, 冷振东, 吴凡)}, authors=[Author(id=1241687557356974821, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=2161253439@qq.com, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1241687557453443823, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, authorId=1241687557356974821, language=EN, stringName=Yi-bo ZHAO, firstName=Yi-bo, middleName=null, lastName=ZHAO, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1a, 1b, address=
1a.Hubei Key Laboratory of Construction and Management in Hydropower Engineering, China Three Gorges University, Yichang 443002, China
1b.College of Hydraulic & Environmental Engineering, China Three Gorges University, Yichang 443002, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1241687557537329910, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, authorId=1241687557356974821, language=CN, stringName=赵毅波, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1a, 1b, address=
1a.三峡大学 湖北省水电工程施工与管理重点实验室,宜昌 443002
1b.三峡大学 水利与环境学院,宜昌 443002, bio={"content":"
赵毅波(1999-),男,硕士研究生,主要从事水工岩石力学与工程爆破研究,(E-mail)2161253439@qq.com。
ZHAO Yi-bo (1999-), male, postgraduate student, mainly engaged in hydraulic rock mechanics and engineering blasting research, (E-mail) 2161253439@qq.com.
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赵毅波(1999-),男,硕士研究生,主要从事水工岩石力学与工程爆破研究,(E-mail)2161253439@qq.com。
ZHAO Yi-bo (1999-), male, postgraduate student, mainly engaged in hydraulic rock mechanics and engineering blasting research, (E-mail) 2161253439@qq.com.
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1a.三峡大学 湖北省水电工程施工与管理重点实验室,宜昌 443002)]), AuthorCompany(id=1241687557038207686, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, xref=1b., ext=[AuthorCompanyExt(id=1241687557046596293, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, companyId=1241687557038207686, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1b.College of Hydraulic & Environmental Engineering, China Three Gorges University, Yichang 443002, China), AuthorCompanyExt(id=1241687557054984902, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, companyId=1241687557038207686, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1b.三峡大学 水利与环境学院,宜昌 443002)])]), Author(id=1241687557629604606, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, orderNo=1, 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=1241687557717684995, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, authorId=1241687557629604606, language=EN, stringName=Du-du SU, firstName=Du-du, middleName=null, lastName=SU, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
2, address=
2.Gansu Water Resources and Hydropower Survey, Design and Research Institute Co., Ltd., Lanzhou 730030, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1241687559215051527, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, authorId=1241687557629604606, language=CN, stringName=苏都都, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
2, address=
2.甘肃省水利水电勘测设计研究院有限责任公司,兰州 730030, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1241687557134676684, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, xref=2., ext=[AuthorCompanyExt(id=1241687557138870988, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, companyId=1241687557134676684, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.Gansu Water Resources and Hydropower Survey, Design and Research Institute Co., Ltd., Lanzhou 730030, China), AuthorCompanyExt(id=1241687557147259597, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, companyId=1241687557134676684, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.甘肃省水利水电勘测设计研究院有限责任公司,兰州 730030)])]), Author(id=1241687559328297745, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, orderNo=2, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=yfan@ctgu.edu.cn, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1241687559466709789, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, authorId=1241687559328297745, language=EN, stringName=Yong FAN, firstName=Yong, middleName=null, lastName=FAN, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1a, 1b, address=
1a.Hubei Key Laboratory of Construction and Management in Hydropower Engineering, China Three Gorges University, Yichang 443002, China
1b.College of Hydraulic & Environmental Engineering, China Three Gorges University, Yichang 443002, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1241687559600927521, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, authorId=1241687559328297745, language=CN, stringName=范勇, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1a, 1b, address=
1a.三峡大学 湖北省水电工程施工与管理重点实验室,宜昌 443002
1b.三峡大学 水利与环境学院,宜昌 443002, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1241687556941738681, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, xref=1a., ext=[AuthorCompanyExt(id=1241687556945932986, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, companyId=1241687556941738681, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1a.Hubei Key Laboratory of Construction and Management in Hydropower Engineering, China Three Gorges University, Yichang 443002, China), AuthorCompanyExt(id=1241687556954321597, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, companyId=1241687556941738681, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1a.三峡大学 湖北省水电工程施工与管理重点实验室,宜昌 443002)]), AuthorCompany(id=1241687557038207686, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, xref=1b., ext=[AuthorCompanyExt(id=1241687557046596293, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, companyId=1241687557038207686, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1b.College of Hydraulic & Environmental Engineering, China Three Gorges University, Yichang 443002, China), AuthorCompanyExt(id=1241687557054984902, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, companyId=1241687557038207686, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1b.三峡大学 水利与环境学院,宜昌 443002)])]), Author(id=1241687559709979433, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, orderNo=3, 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=1241687559852585777, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, authorId=1241687559709979433, language=EN, stringName=Guang-dong YANG, firstName=Guang-dong, middleName=null, lastName=YANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1a, 1b, address=
1a.Hubei Key Laboratory of Construction and Management in Hydropower Engineering, China Three Gorges University, Yichang 443002, China
1b.College of Hydraulic & Environmental Engineering, China Three Gorges University, Yichang 443002, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1241687559944860470, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, authorId=1241687559709979433, language=CN, stringName=杨广栋, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1a, 1b, address=
1a.三峡大学 湖北省水电工程施工与管理重点实验室,宜昌 443002
1b.三峡大学 水利与环境学院,宜昌 443002, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1241687556941738681, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, xref=1a., ext=[AuthorCompanyExt(id=1241687556945932986, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, companyId=1241687556941738681, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1a.Hubei Key Laboratory of Construction and Management in Hydropower Engineering, China Three Gorges University, Yichang 443002, China), AuthorCompanyExt(id=1241687556954321597, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, companyId=1241687556941738681, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1a.三峡大学 湖北省水电工程施工与管理重点实验室,宜昌 443002)]), AuthorCompany(id=1241687557038207686, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, xref=1b., ext=[AuthorCompanyExt(id=1241687557046596293, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, companyId=1241687557038207686, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1b.College of Hydraulic & Environmental Engineering, China Three Gorges University, Yichang 443002, China), AuthorCompanyExt(id=1241687557054984902, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, companyId=1241687557038207686, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1b.三峡大学 水利与环境学院,宜昌 443002)])]), Author(id=1241687560016163643, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, orderNo=4, 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=1241687560087466820, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, authorId=1241687560016163643, language=EN, stringName=Zhen-dong LENG, firstName=Zhen-dong, middleName=null, lastName=LENG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1a, 3, address=
1a.Hubei Key Laboratory of Construction and Management in Hydropower Engineering, China Three Gorges University, Yichang 443002, China
3.CHINA Gezhouba GROUP Explosive Co., Ltd., Chongqing 401121, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1241687560167158598, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, authorId=1241687560016163643, language=CN, stringName=冷振东, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1a, 3, address=
1a.三峡大学 湖北省水电工程施工与管理重点实验室,宜昌 443002
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Interaction between two adjacent blast holes, figureFileSmall=P+1eGylwozWSkhDrrw4Z4g==, figureFileBig=46bx2JqMURByB+cgUHP/lg==, tableContent=null), ArticleFig(id=1241687561656136619, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, language=CN, label=图1, caption=
相邻炮孔起爆模型, figureFileSmall=P+1eGylwozWSkhDrrw4Z4g==, figureFileBig=46bx2JqMURByB+cgUHP/lg==, tableContent=null), ArticleFig(id=1241687561832297396, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, language=EN, label=Fig. 2, caption=
Tangential tensile stress on connecting line between holes, figureFileSmall=7GqdaWSDqRKOfJJdWcWHMA==, figureFileBig=oISz8EH3G/dkHJc5vLm3gA==, tableContent=null), ArticleFig(id=1241687561937155002, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, language=CN, label=图2, caption=
孔间连线上切向拉应力, figureFileSmall=7GqdaWSDqRKOfJJdWcWHMA==, figureFileBig=oISz8EH3G/dkHJc5vLm3gA==, tableContent=null), ArticleFig(id=1241687562012652477, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, language=EN, label=Fig. 3, caption=
Reflection of incident longitudinal waves on the free face, figureFileSmall=qxdLvJdIvl/Sw0AxTU1RhA==, figureFileBig=tZPCFPysKHzDKqgEmqxDNw==, tableContent=null), ArticleFig(id=1241687562125898692, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, language=CN, label=图3, caption=
入射纵波在自由面的反射, figureFileSmall=qxdLvJdIvl/Sw0AxTU1RhA==, figureFileBig=tZPCFPysKHzDKqgEmqxDNw==, tableContent=null), ArticleFig(id=1241687563627459530, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, language=EN, label=Fig. 4, caption=
Force on point N on a free surface, figureFileSmall=K57NO/wq0/aS5R0yt//Tsw==, figureFileBig=nuudr8ScvVGfahKBRCCOgg==, tableContent=null), ArticleFig(id=1241687563786843090, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, language=CN, label=图4, caption=
自由面上N点的受力情况, figureFileSmall=K57NO/wq0/aS5R0yt//Tsw==, figureFileBig=nuudr8ScvVGfahKBRCCOgg==, tableContent=null), ArticleFig(id=1241687563866534871, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, language=EN, label=Fig. 5, caption=
Numerical model (unit: m), figureFileSmall=QT7fWrbBLrI7v1Kk86yVkA==, figureFileBig=LftjrwR86KEoRIT6QYnPow==, tableContent=null), ArticleFig(id=1241687564004946913, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, language=CN, label=图5, caption=
计算模型(单位:m), figureFileSmall=QT7fWrbBLrI7v1Kk86yVkA==, figureFileBig=LftjrwR86KEoRIT6QYnPow==, tableContent=null), ArticleFig(id=1241687564109804517, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, language=EN, label=Fig. 6, caption=
Comparison of experiments with numerical simulations, figureFileSmall=LEbWkJ/b9GudtPFEkI0UNQ==, figureFileBig=Xr2i9MI8JElQBHOF/rcWLA==, tableContent=null), ArticleFig(id=1241687564210467818, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, language=CN, label=图6, caption=
试验与数值模拟对比, figureFileSmall=LEbWkJ/b9GudtPFEkI0UNQ==, figureFileBig=Xr2i9MI8JElQBHOF/rcWLA==, tableContent=null), ArticleFig(id=1241687564344685554, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, language=EN, label=Fig. 7, caption=
Damage contours under different free-surface conditions of the case of 0 ms delay, figureFileSmall=/cQQWR+K1WyvjavG6l0jqg==, figureFileBig=H2GmiMxu1X5cxAinDQt5Xw==, tableContent=null), ArticleFig(id=1241687564449543158, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, language=CN, label=图7, caption=
同时起爆不同自由面条件下的裂纹分布特征, figureFileSmall=/cQQWR+K1WyvjavG6l0jqg==, figureFileBig=H2GmiMxu1X5cxAinDQt5Xw==, tableContent=null), ArticleFig(id=1241687564533429245, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, language=EN, label=Fig. 8, caption=
Fragmentation analysis steps, figureFileSmall=ABd8GWApSWGiV8WXgCZRAg==, figureFileBig=KVR6hkit9Ssn7OCNCzsTPg==, tableContent=null), ArticleFig(id=1241687564613120001, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, language=CN, label=图8, caption=
块度分析步骤, figureFileSmall=ABd8GWApSWGiV8WXgCZRAg==, figureFileBig=KVR6hkit9Ssn7OCNCzsTPg==, tableContent=null), ArticleFig(id=1241687564676034564, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, language=EN, label=Fig. 9, caption=
Fragmentation distribution under different quantity of free surface, figureFileSmall=gemFgNBPWo5N+doSHpYCqg==, figureFileBig=FEKhSx9B/QLziFnlnxMPQQ==, tableContent=null), ArticleFig(id=1241687564743143433, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, language=CN, label=图9, caption=
不同数量自由面条件下块度分布, figureFileSmall=gemFgNBPWo5N+doSHpYCqg==, figureFileBig=FEKhSx9B/QLziFnlnxMPQQ==, tableContent=null), ArticleFig(id=1241687564822835213, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, language=EN, label=Fig. 10, caption=
Fragmentation metrics under different numbers of free surfaces, figureFileSmall=kh1IFsgZKfk/xBjaIzHehw==, figureFileBig=ew4oUI3DELFLe6Av/5/gBA==, tableContent=null), ArticleFig(id=1241687564915109906, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, language=CN, label=图10, caption=
不同数量自由面条件下块度指标, figureFileSmall=kh1IFsgZKfk/xBjaIzHehw==, figureFileBig=ew4oUI3DELFLe6Av/5/gBA==, tableContent=null), ArticleFig(id=1241687565003190294, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, language=EN, label=Fig. 11, caption=
Damage contours under different delay intervals, figureFileSmall=BOIsVY2f6FvXqKSxvyKtfw==, figureFileBig=Ahh7IDdUn4JrLjVUQoh4oA==, tableContent=null), ArticleFig(id=1241687565116436508, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, language=CN, label=图11, caption=
孔间不同延迟起爆的损伤云图, figureFileSmall=BOIsVY2f6FvXqKSxvyKtfw==, figureFileBig=Ahh7IDdUn4JrLjVUQoh4oA==, tableContent=null), ArticleFig(id=1241687565179351072, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, language=EN, label=Fig. 12, caption=
Fragmentation distribution under different delay intervals, figureFileSmall=vG2a3K8s8DaNgt+UBxfrog==, figureFileBig=dySfE4LxPu+8iBQ5gX2NDQ==, tableContent=null), ArticleFig(id=1241687565254848547, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, language=CN, label=图12, caption=
孔间不同延迟起爆的块度分布, figureFileSmall=vG2a3K8s8DaNgt+UBxfrog==, figureFileBig=dySfE4LxPu+8iBQ5gX2NDQ==, tableContent=null), ArticleFig(id=1241687565342928935, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, language=EN, label=Fig. 13, caption=
Fragmentation metrics under different delay intervals, figureFileSmall=fkBy6avAyc/YHuzymyaaHg==, figureFileBig=0PR1h2IZ8iqBPe9/rr6Ogg==, tableContent=null), ArticleFig(id=1241687565414232109, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, language=CN, label=图13, caption=
孔间不同延迟爆破块度指标, figureFileSmall=fkBy6avAyc/YHuzymyaaHg==, figureFileBig=0PR1h2IZ8iqBPe9/rr6Ogg==, tableContent=null), ArticleFig(id=1241687565523284018, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, language=EN, label=Table 1, caption=
Parameters of explosive in numerical models
, figureFileSmall=null, figureFileBig=null, tableContent=
| 密度/(kg·m-3) | 爆速/(m·s-1) | A/GPa | B/GPa | R1 | R2 | ω |
|---|
| 850 | 3500 | 244 | 1.82 | 4.2 | 0.95 | 0.30 |
), ArticleFig(id=1241687565619753016, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, language=CN, label=表1, caption=
炸药参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 密度/(kg·m-3) | 爆速/(m·s-1) | A/GPa | B/GPa | R1 | R2 | ω |
|---|
| 850 | 3500 | 244 | 1.82 | 4.2 | 0.95 | 0.30 |
), ArticleFig(id=1241687565716222010, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, language=EN, label=Table 2, caption=
Main parameters of RHT model
, figureFileSmall=null, figureFileBig=null, tableContent=
| 符号 | 参数含义 | 取值 | 符号 | 参数含义 | 取值 |
|---|
| ρr | 物质密度 | 2600 kg/m3 | A | 失效面参数 | 1.6 |
| Pel | 孔隙压缩时压力 | 50 MPa | N | 失效面指数 | 0.61 |
| Pco | 孔隙压实时压力 | 4.00 GPa | Q0 | 拉压子午比 | 0.6805 |
| NP | 孔隙度指数 | 3.0 | B | 洛德角相关指数 | 0.0105 |
| α | 初始孔隙度 | 1.35 | BETAC | 压缩应变率相关指数 | 0.02 |
| fc | 抗压强度 | 64 MPa | BETAT | 拉伸应变率相关指数 | 0.05 |
 | 相对抗拉强度 | 0.085 | E0C | 参考压缩应变率 | 3×10-5 |
 | 相对抗剪强度 | 0.25 | E0T | 参考拉伸应变率 | 3×10-6 |
| G | 剪切模量 | 16.0 GPa | EC | 破坏压缩应变率 | 3×1025 |
| GC* | 压缩屈服面参数 | 0.53 | ET | 破坏拉伸应变率 | 3×1025 |
| GT* | 拉伸屈服面参数 | 0.70 | AF | 残余应力强度参数 | 1.60 |
| EPM | 最小损伤残余应变 | 0.01 | NF | 残余应力强度指数 | 0.61 |
), ArticleFig(id=1241687565804302398, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687546439200868, language=CN, label=表2, caption=
RHT模型主要参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 符号 | 参数含义 | 取值 | 符号 | 参数含义 | 取值 |
|---|
| ρr | 物质密度 | 2600 kg/m3 | A | 失效面参数 | 1.6 |
| Pel | 孔隙压缩时压力 | 50 MPa | N | 失效面指数 | 0.61 |
| Pco | 孔隙压实时压力 | 4.00 GPa | Q0 | 拉压子午比 | 0.6805 |
| NP | 孔隙度指数 | 3.0 | B | 洛德角相关指数 | 0.0105 |
| α | 初始孔隙度 | 1.35 | BETAC | 压缩应变率相关指数 | 0.02 |
| fc | 抗压强度 | 64 MPa | BETAT | 拉伸应变率相关指数 | 0.05 |
 | 相对抗拉强度 | 0.085 | E0C | 参考压缩应变率 | 3×10-5 |
 | 相对抗剪强度 | 0.25 | E0T | 参考拉伸应变率 | 3×10-6 |
| G | 剪切模量 | 16.0 GPa | EC | 破坏压缩应变率 | 3×1025 |
| GC* | 压缩屈服面参数 | 0.53 | ET | 破坏拉伸应变率 | 3×1025 |
| GT* | 拉伸屈服面参数 | 0.70 | AF | 残余应力强度参数 | 1.60 |
| EPM | 最小损伤残余应变 | 0.01 | NF | 残余应力强度指数 | 0.61 |
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