Article(id=1241409512406577236, tenantId=1146029695717560320, journalId=1240670690148397066, issueId=1241409507583127593, articleNumber=null, orderNo=null, doi=10.3963/j.issn.1001-487X.2024.04.002, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1703088000000, receivedDateStr=2023-12-21, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1773904692031, onlineDateStr=2026-03-19, pubDate=1732982400000, pubDateStr=2024-12-01, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1773904692031, onlineIssueDateStr=2026-03-19, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1773904692031, creator=13701087609, updateTime=1773904692031, 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=8, endPage=17, ext={EN=ArticleExt(id=1241409513111220318, articleId=1241409512406577236, tenantId=1146029695717560320, journalId=1240670690148397066, language=EN, title=Study on Dynamic Characteristics and Fracture Mechanism of Coal Rock under Action of Mechanical-thermal Coupling, columnId=1240702071733801442, journalTitle=Blasting, columnName=THEORETICAL AND TECHNOLOGICAL EXPLORATION, runingTitle=null, highlight=null, articleAbstract=
To carry out deep coal mining safely and efficiently, the dynamic mechanical characteristics and fracture mechanism of coal rock in deep earth were investigated under the ‘three high and one disturbance’ environment. A dynamic impact test of coal rock was carried out using the self-improved ϕ 50 mm high temperature synchronous split Hopkinson pressure bar (SHPB) test equipment at temperatures between 25~200℃. A ZWT viscoelastic constitutive model was also improved to establish a dynamic constitutive equation considering the temperature effect. The influence of high temperature on crack development law and the dynamic strength of coal rock was investigated based on the coupling of the finite difference and discrete element methods. The results show four stages to the dynamic stress-strain curve of coal rock under high-temperature impact: compaction, elastic, crack propagation, and softening failure. The dynamic compressive strength and dynamic elastic modulus of coal rock significantly decrease as temperature increases. In contrast, the failure strain increases, and the absorbed energy varies in a W-shaped pattern. The fractal dimension increases linearly as the particle size decreases. The degree and complexity of the fragmentation mechanism increase as the compressive strength decreases. Although the improved dynamic constitutive model based on ZWT could adequately express the stress-strain relationship following a high-temperature impact, it does not apply to the compaction stage. According to the simulation and test results, water and adsorbed gas actively escape in the coal rock at 150℃. The coal matrix is also heated and expanded, which induces cracks. There are apparent mesoscopic cracks initially and gradually developed through cracks, mainly shear ones. The crack development of coal rock under dynamic compression at 100℃ develops through the impact surface, and the high temperature deteriorates the strength of coal rock.
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LUO Ning (1980-), male, Ph. D, professor and doctoral supervisor, mainly engaged in the research of explosion and impact dynamics (high-performance computing and impact protection theory), deep rock dynamics (resource and energy development and key mechanical problems) and other related science and technology, (E-mail)
nluo@cumt.edu.cn.
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为了安全高效地进军深部煤炭资源开采,开展深地“三高一扰动”环境下煤岩的动态力学特性和破碎机理研究,采用自主改进的ϕ 50 mm高温同步分离式霍普金森压杆(SHPB)试验系统,对25~200℃温度下煤岩进行动态冲击试验研究,并改进ZWT粘弹性本构模型建立考虑温度效应的煤岩动态本构方程,基于有限差分-离散元数值模拟研究高温效应对煤岩裂纹发育规律及其动态强度的影响。研究表明:高温冲击作用下煤岩的动态应力应变曲线可划分为四个阶段:压密阶段、弹性阶段、裂纹增长阶段和软化失效阶段;随着温度的增加,煤岩的动态抗压强度和动态弹性模量劣化明显,失效应变呈现增加趋势,吸收能则呈现W型波动趋势;破碎粒径减小,分形维数则呈现明显的线性增加,抗压强度越低,破碎程度越高,破碎模式更为复杂;基于ZWT改进后的动态本构模型良好地表达高温冲击后的应力应变关系,但对压密阶段的表达不甚理想;模拟和试验结果显示煤岩在150℃高温后水成分和吸附气体活跃析出,煤基质受热膨胀破裂,出现明显细观裂纹,并逐渐发育为贯通裂纹,其中以剪切裂纹为主。煤岩在100℃下动态压缩的裂纹发育从受撞击面发育贯通,高温劣化煤岩强度。研究结论为“三高一扰动”深部复杂地况下煤炭资源安全高效开采提供基础理论支持。
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罗宁(1980-),男,博士、教授、博士生导师,主要从事爆炸与冲击动力学(高性能计算与冲击防护理论)、深地岩石动力学(资源能源开发及关键力学问题)等相关科学与技术的研究,(E-mail)
nluo@cumt.edu.cn。
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李鹏龙(1999-),男,硕士研究生,主要从事岩石冲击动力学方向的学习研究,(E-mail)2337807483@qq.com。
LI Peng-long (1999-), male, master′s degree candidate, mainly engaged in the study and research of rock impact dynamics, (E-mail) 2337807483@qq.com.
, authorsList=李鹏龙, 罗宁, 索云琛, 柴亚博, 孙锐)}, authors=[Author(id=1241409533038359174, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=2337807483@qq.com, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1241409533155799695, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, authorId=1241409533038359174, language=EN, stringName=Peng-long LI, firstName=Peng-long, middleName=null, lastName=LI, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1a.State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, China
1b.School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221116, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1241409533290017431, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, authorId=1241409533038359174, language=CN, stringName=李鹏龙, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1a, 1b, address=
1a.中国矿业大学 深部岩土力学与地下工程国家重点实验室,徐州 221116
1b.中国矿业大学 力学与土木工程学院,徐州 221116, bio={"content":"
李鹏龙(1999-),男,硕士研究生,主要从事岩石冲击动力学方向的学习研究,(E-mail)2337807483@qq.com。
LI Peng-long (1999-), male, master′s degree candidate, mainly engaged in the study and research of rock impact dynamics, (E-mail) 2337807483@qq.com.
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李鹏龙(1999-),男,硕士研究生,主要从事岩石冲击动力学方向的学习研究,(E-mail)2337807483@qq.com。
LI Peng-long (1999-), male, master′s degree candidate, mainly engaged in the study and research of rock impact dynamics, (E-mail) 2337807483@qq.com.
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1a.中国矿业大学 深部岩土力学与地下工程国家重点实验室,徐州 221116)]), AuthorCompany(id=1241409531306111602, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, xref=1b., ext=[AuthorCompanyExt(id=1241409531314500214, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, companyId=1241409531306111602, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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1a, 1b, 2, address=
1a.State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, China
1b.School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221116, China
2.State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1241409533642338986, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, authorId=1241409533411652253, language=CN, stringName=罗宁, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1a.中国矿业大学 深部岩土力学与地下工程国家重点实验室,徐州 221116
1b.中国矿业大学 力学与土木工程学院,徐州 221116
2.北京理工大学 爆炸科学与技术国家重点实验室,北京 100081 , bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1241409531167699558, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, xref=1a., ext=[AuthorCompanyExt(id=1241409531171893863, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, companyId=1241409531167699558, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1a.State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, China), AuthorCompanyExt(id=1241409531184476777, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, companyId=1241409531167699558, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1a.中国矿业大学 深部岩土力学与地下工程国家重点实验室,徐州 221116)]), AuthorCompany(id=1241409531306111602, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, xref=1b., ext=[AuthorCompanyExt(id=1241409531314500214, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, companyId=1241409531306111602, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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2.北京理工大学 爆炸科学与技术国家重点实验室,北京 100081 )])]), Author(id=1241409533772362421, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, orderNo=2, 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=1241409533902385855, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, authorId=1241409533772362421, language=EN, stringName=Yun-chen SUO, firstName=Yun-chen, middleName=null, lastName=SUO, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1a, 1b, address=
1a.State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, China
1b.School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221116, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1241409534032409286, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, authorId=1241409533772362421, language=CN, stringName=索云琛, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1a, 1b, address=
1a.中国矿业大学 深部岩土力学与地下工程国家重点实验室,徐州 221116
1b.中国矿业大学 力学与土木工程学院,徐州 221116, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1241409531167699558, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, xref=1a., ext=[AuthorCompanyExt(id=1241409531171893863, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, companyId=1241409531167699558, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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1b.中国矿业大学 力学与土木工程学院,徐州 221116)])]), Author(id=1241409534229541582, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, 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=1241409534342787797, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, authorId=1241409534229541582, language=EN, stringName=Ya-bo CHAI, firstName=Ya-bo, middleName=null, lastName=CHAI, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1a, 1b, address=
1a.State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, China
1b.School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221116, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1241409534493782750, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, authorId=1241409534229541582, language=CN, stringName=柴亚博, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1a, 1b, address=
1a.中国矿业大学 深部岩土力学与地下工程国家重点实验室,徐州 221116
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高温SHPB测试系统, figureFileSmall=O8lGAD+JxdGoia1Z6JeY+Q==, figureFileBig=mJkVAhlz7cd4g9cHeDxp9w==, tableContent=null), ArticleFig(id=1241409539061379948, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, language=EN, label=Fig. 4, caption=
Verification of coal rock stress uniformity, figureFileSmall=goUmzAxgaFwQblAANfAQjA==, figureFileBig=Qvx+hvgO5SV7XdwN64Y7PQ==, tableContent=null), ArticleFig(id=1241409539187209071, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, language=CN, label=图4, caption=
煤岩应力均匀性验证, figureFileSmall=goUmzAxgaFwQblAANfAQjA==, figureFileBig=Qvx+hvgO5SV7XdwN64Y7PQ==, tableContent=null), ArticleFig(id=1241409539292066679, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, language=EN, label=Fig. 5, caption=
Dynamic stress-strain curves under force-thermal coupling, figureFileSmall=5yu7Fvel6FcYl1O1w2e91A==, figureFileBig=8Jbh8EuPvpuJksjkcnnuyg==, tableContent=null), ArticleFig(id=1241409539455644538, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, language=CN, label=图5, caption=
力-热耦合作用下动态应力-应变曲线, figureFileSmall=5yu7Fvel6FcYl1O1w2e91A==, figureFileBig=8Jbh8EuPvpuJksjkcnnuyg==, tableContent=null), ArticleFig(id=1241409539552113535, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, language=EN, label=Fig. 6, caption=
Variation of compressive strength with temperature, figureFileSmall=2k3q/alTtLtmAbFATBy2WA==, figureFileBig=yWwwgsx90/8bdKTc9Iq3RA==, tableContent=null), ArticleFig(id=1241409539711497097, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, language=CN, label=图6, caption=
抗压强度随温度的变化规律, figureFileSmall=2k3q/alTtLtmAbFATBy2WA==, figureFileBig=yWwwgsx90/8bdKTc9Iq3RA==, tableContent=null), ArticleFig(id=1241409539841520527, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, language=EN, label=Fig. 7, caption=
Variation of failure strain and elastic modulus with temperature, figureFileSmall=W6DWMPcmGYVFA2BhzMiLrw==, figureFileBig=Tkq14WwaIMWMu882V0kS9g==, tableContent=null), ArticleFig(id=1241409540080595863, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, language=CN, label=图7, caption=
失效应变和弹性模量随温度的变化规律, figureFileSmall=W6DWMPcmGYVFA2BhzMiLrw==, figureFileBig=Tkq14WwaIMWMu882V0kS9g==, tableContent=null), ArticleFig(id=1241409540214813596, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, language=EN, label=Fig. 8, caption=
Variation of absorption energy with temperature, figureFileSmall=52FLISEcbEsJzf+3m89SPw==, figureFileBig=cVTRQ+NQzyJUy3cxASPTdg==, tableContent=null), ArticleFig(id=1241409540336448415, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, language=CN, label=图8, caption=
吸收能随温度的变化规律, figureFileSmall=52FLISEcbEsJzf+3m89SPw==, figureFileBig=cVTRQ+NQzyJUy3cxASPTdg==, tableContent=null), ArticleFig(id=1241409540420334500, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, language=EN, label=Fig. 9, caption=
Failure modes of coal under mechanical-thermo coupling action, figureFileSmall=1pZ1fOPXE1XAOtZyXXaUAA==, figureFileBig=LoyJ0aIBQjGpsOWc273ZsA==, tableContent=null), ArticleFig(id=1241409541934478252, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, language=CN, label=图9, caption=
力-热耦合作用下煤岩的破坏模式, figureFileSmall=1pZ1fOPXE1XAOtZyXXaUAA==, figureFileBig=LoyJ0aIBQjGpsOWc273ZsA==, tableContent=null), ArticleFig(id=1241409542056113072, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, language=EN, label=Fig. 10, caption=
Variation of average particle size with temperature, figureFileSmall=DfsJOC6ZdIRv66GWsY7ALQ==, figureFileBig=n+vZqQzqT46s/Acg25OjGA==, tableContent=null), ArticleFig(id=1241409542265828279, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, language=CN, label=图10, caption=
平均粒径随温度的变化规律, figureFileSmall=DfsJOC6ZdIRv66GWsY7ALQ==, figureFileBig=n+vZqQzqT46s/Acg25OjGA==, tableContent=null), ArticleFig(id=1241409542395851708, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, language=EN, label=Fig. 11, caption=
Fractal dimension changes with temperature, figureFileSmall=nRwj2kuYFPHQwMiu+f17sA==, figureFileBig=BjvKvQusI2se+ynPqc0esg==, tableContent=null), ArticleFig(id=1241409542517486529, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, language=CN, label=图11, caption=
分形维数随温度的变化规律, figureFileSmall=nRwj2kuYFPHQwMiu+f17sA==, figureFileBig=BjvKvQusI2se+ynPqc0esg==, tableContent=null), ArticleFig(id=1241409542676870089, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, language=EN, label=Fig. 12, caption=
Dynamic constitutive model of coal rock considering temperature effect, figureFileSmall=AlltwKpIrteaGi82JR76lA==, figureFileBig=oAqdL/gre5xD+Djig63wSw==, tableContent=null), ArticleFig(id=1241409542798504908, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, language=CN, label=图12, caption=
考虑温度效应的煤岩动态本构模型, figureFileSmall=AlltwKpIrteaGi82JR76lA==, figureFileBig=oAqdL/gre5xD+Djig63wSw==, tableContent=null), ArticleFig(id=1241409542911751121, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, language=EN, label=Fig. 13, caption=
Comparison of stress-strain curves between experimental result and simulated result, figureFileSmall=O3ElunVP7JwFdincGjj/8g==, figureFileBig=fIv7RK4Be4Nwh55RKaYyqA==, tableContent=null), ArticleFig(id=1241409543037580247, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, language=CN, label=图13, caption=
试验结果与模拟结果的应力应变曲线对照, figureFileSmall=O3ElunVP7JwFdincGjj/8g==, figureFileBig=fIv7RK4Be4Nwh55RKaYyqA==, tableContent=null), ArticleFig(id=1241409543129854938, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, language=EN, label=Fig. 14, caption=
Static compression simulation failure mode of coal rock, figureFileSmall=RMpoOFb2NwhIsKYHDiHC+Q==, figureFileBig=YpfAnoYya7GtbF1brYBxcA==, tableContent=null), ArticleFig(id=1241409543243101149, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, language=CN, label=图14, caption=
煤岩的静态压缩模拟破坏模式, figureFileSmall=RMpoOFb2NwhIsKYHDiHC+Q==, figureFileBig=YpfAnoYya7GtbF1brYBxcA==, tableContent=null), ArticleFig(id=1241409543385707489, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, language=EN, label=Fig. 15, caption=
Variation of crack development with temperature at 200℃, figureFileSmall=eONTMZ/JPqYHsq+E2EMpcg==, figureFileBig=xYtDA/QoQlYrvJQLxNy3iQ==, tableContent=null), ArticleFig(id=1241409543486370786, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, language=CN, label=图15, caption=
200℃下裂纹发育随温度的变化规律, figureFileSmall=eONTMZ/JPqYHsq+E2EMpcg==, figureFileBig=xYtDA/QoQlYrvJQLxNy3iQ==, tableContent=null), ArticleFig(id=1241409543599616999, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, language=EN, label=Fig. 16, caption=
Variation of crack development with temperature at 200℃, figureFileSmall=L5dTPL6ewSlu3Tu/2pzUCQ==, figureFileBig=PNTSN3FY/MV80LxSYifNQg==, tableContent=null), ArticleFig(id=1241409543738029033, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, language=CN, label=图16, caption=
200℃下裂纹发育随温度的变化规律, figureFileSmall=L5dTPL6ewSlu3Tu/2pzUCQ==, figureFileBig=PNTSN3FY/MV80LxSYifNQg==, tableContent=null), ArticleFig(id=1241409543880635374, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, language=EN, label=Fig. 17, caption=
Numerical model based on finite difference-discrete element method, figureFileSmall=PavCCTaiOhtE4hF/c/lc3g==, figureFileBig=K/afku+LnEkoQePR4nimPg==, tableContent=null), ArticleFig(id=1241409544006464496, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, language=CN, label=图17, caption=
基于有限差分-离散元法建立的数值模型, figureFileSmall=PavCCTaiOhtE4hF/c/lc3g==, figureFileBig=K/afku+LnEkoQePR4nimPg==, tableContent=null), ArticleFig(id=1241409544128099315, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, language=EN, label=Fig. 18, caption=
Experimental and numerical simulation stress waveform verification, figureFileSmall=ShlGrjbgA32Gaw8BoKcuNg==, figureFileBig=XvdJ8gJgb8olMOMxWCW5/A==, tableContent=null), ArticleFig(id=1241409544224568310, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, language=CN, label=图18, caption=
试验与数值模拟应力波形验证, figureFileSmall=ShlGrjbgA32Gaw8BoKcuNg==, figureFileBig=XvdJ8gJgb8olMOMxWCW5/A==, tableContent=null), ArticleFig(id=1241409544304260089, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, language=EN, label=Fig. 19, caption=
Law of crack propagation in coal impingement at 100℃, figureFileSmall=ZT7uPQmRteDVXiUk1y39/w==, figureFileBig=9LZ6AEp/5jRrvE/br+0rJw==, tableContent=null), ArticleFig(id=1241409544396534780, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, language=CN, label=图19, caption=
100℃下冲击煤岩裂纹扩展规律, figureFileSmall=ZT7uPQmRteDVXiUk1y39/w==, figureFileBig=9LZ6AEp/5jRrvE/br+0rJw==, tableContent=null), ArticleFig(id=1241409544488809471, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, language=EN, label=Table 1, caption=
Specific SHPB bar parameters
, figureFileSmall=null, figureFileBig=null, tableContent=
| 材料 | 冲击杆 | 入射杆 | 透射杆 | 吸收杆 | 泊松比 |
| 锰硅弹簧钢 | 500 mm | 3000 mm | 3000 mm | 1200 mm | 0.29 |
| 弹性模量 | 密度 | 纵波速度 | 抗拉强度 | 屈服强度 | 断面收缩率 |
| 210 GPa | 7800 kg/m3 | 5188 m/s | σb≥1274 MPa | σs≥1176 MPa | ψ≥25% |
), ArticleFig(id=1241409544610443264, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, language=CN, label=表1, caption=
具体SHPB杆件参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 材料 | 冲击杆 | 入射杆 | 透射杆 | 吸收杆 | 泊松比 |
| 锰硅弹簧钢 | 500 mm | 3000 mm | 3000 mm | 1200 mm | 0.29 |
| 弹性模量 | 密度 | 纵波速度 | 抗拉强度 | 屈服强度 | 断面收缩率 |
| 210 GPa | 7800 kg/m3 | 5188 m/s | σb≥1274 MPa | σs≥1176 MPa | ψ≥25% |
), ArticleFig(id=1241409544702717957, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, language=EN, label=Table 2, caption=
Pb model parameters of particles
, figureFileSmall=null, figureFileBig=null, tableContent=
| 颗粒接触模量 | 刚度比 | 平行黏结模量 | 平行黏结刚度比 | 法向黏结强度 | 切向黏结强度 |
|---|
| 8e8 | 1.5 | 8e8 | 1.5 | 8e6 | 1.89e7 |
), ArticleFig(id=1241409544794992645, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241409512406577236, language=CN, label=表2, caption=
颗粒Pb模型参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 颗粒接触模量 | 刚度比 | 平行黏结模量 | 平行黏结刚度比 | 法向黏结强度 | 切向黏结强度 |
|---|
| 8e8 | 1.5 | 8e8 | 1.5 | 8e6 | 1.89e7 |
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