Article(id=1149735804223800069, tenantId=1146029695717560320, journalId=1146031787341344770, issueId=1149735800964825832, articleNumber=1003-3033(2024)11-0108-11, orderNo=null, doi=10.16265/j.cnki.issn1003-3033.2024.11.0682, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1715616000000, receivedDateStr=2024-05-14, revisedDate=1724860800000, revisedDateStr=2024-08-29, acceptedDate=null, acceptedDateStr=null, onlineDate=1752047976785, onlineDateStr=2025-07-09, pubDate=1732723200000, pubDateStr=2024-11-28, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1752047976785, onlineIssueDateStr=2025-07-09, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1752047976784, creator=13701087609, updateTime=1752047976784, updator=13701087609, issue=Issue{id=1149735800964825832, tenantId=1146029695717560320, journalId=1146031787341344770, year='2024', volume='34', issue='11', pageStart='1', pageEnd='252', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1752047976008, creator=13701087609, updateTime=1756361988347, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1167830080236565470, tenantId=1146029695717560320, journalId=1146031787341344770, issueId=1149735800964825832, language=EN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1167830080236565471, tenantId=1146029695717560320, journalId=1146031787341344770, issueId=1149735800964825832, language=CN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=108, endPage=118, ext={EN=ArticleExt(id=1149735804521595662, articleId=1149735804223800069, tenantId=1146029695717560320, journalId=1146031787341344770, language=EN, title=Evolution of overburden structure and stability of coal pillars in isolated island working face, columnId=1149733269173878863, journalTitle=China Safety Science Journal, columnName=Safety engineering technology, runingTitle=null, highlight=null, articleAbstract=
To investigate the evolution of overburden structure and the stability of district coal pillars during the mining of shallow-buried coal seam island faces,a study was conducted with the 50104 working face of Taihua coal mine as the engineering background. The research employed a combination of theoretical analysis,numerical simulation,and on-site measurement to analyze the load-bearing capacity of the district coal pillars and the characteristics of overburden structure evolution on both sides. The FLAC3D numerical software was utilized to simulate the distribution of plastic zones and the evolution of mining-induced stress. The results indicate that during the advancement of the 50104 working face,the plastic destruction of the district coal pillars on both sides lagged behind the progress of the working face. The district coal pillars located in the goaf area behind the working face were in a state of plastic destruction,while those in front of the working face coal wall maintained a stable elastic zone,overall remaining stable. Throughout the working face advancement,the stress distribution of the district coal pillars on both sides exhibited the same characteristics,with two 11 m coal pillars showing symmetric high-stress concentration areas,both located behind the working face. The development speed of the high-stress destruction area of the district coal pillars lagged behind the advancement speed of the working face. The average stress value in the central area of the district coal pillars in front of the working face increased from 3.35 MPa to 3.54 MPa,but it never exceeded the coal pillar bearing capacity value calculated theoretically. Analysis of the mine pressure monitoring data from the 50104 working face revealed that the average initial support force was 3 932.4 kN,accounting for 55% of the rated initial support force of hydraulic support. The average maximum working resistance was 5 812.3 kN,representing 61.2% of the rated working resistance. The weighted average resistance was 4 836.6 kN per support,which is 50.9% of the rated working resistance. The maximum pressure was 6 013 kN,with a support stress of about 2.35 MPa,proving the stability of 11 m coal pillars and indicating that the overall stability of the district coal pillars in front of the working face coal wall is relatively good.
, correspAuthors=Peng WANG, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, authorCompany=null, fund=null, authors=null, authorsList=Hongyu WANG, Zhiheng CHENG, Peng WANG, Liang CHEN, Xiaoming QU, Kai GUO), CN=ArticleExt(id=1149735824826221149, articleId=1149735804223800069, tenantId=1146029695717560320, journalId=1146031787341344770, language=CN, title=孤岛工作面覆岩结构演化及区段煤柱稳定性, columnId=1149733269727526997, journalTitle=中国安全科学学报, columnName=安全工程技术, runingTitle=null, highlight=null, articleAbstract=
为探究浅埋煤层孤岛工作面开采时覆岩结构演化及区段煤柱稳定性,以泰华煤矿50104工作面为工程背景,采用理论分析、数值模拟、现场实测相结合的研究手段,分析其两侧区段煤柱承载能力及区段煤柱覆岩结构演化特征;并利用FLAC3D数值软件,模拟塑性区分布情况以及采动应力演化特征。结果表明:50104工作面推进过程中,东西两侧区段煤柱塑性破坏滞后于工作面推进过程,位于工作面后方采空区处的区段煤柱处于塑性破坏状态,而位于工作面煤壁前方的煤柱存在稳定的弹性区,整体保持稳定,且两侧区段煤柱应力分布呈现相同特征,2条11 m煤柱高应力集中区域保持对称,均位于工作面后方;工作面区段煤柱高应力破坏区域发展速度滞后于工作面推进速度,工作面前方区段煤柱中心区域平均应力值从3.35 MPa增加至3.54 MPa,但始终未超过理论计算得到的煤柱承载强度值;通过分析50104工作面的矿压监测数据,得出实测初撑力均值为 3932.4 kN,占液压支架额定初撑力的55%;平均最大工作阻力5 812.3kN,占额定工作阻力的61.2%;加权平均阻力均值为4 836.6kN/架,占额定工作阻力的50.9%;最大来压6 013 kN,支架应力约2.35 MPa,证明11 m煤柱稳定,位于工作面煤壁前方区段煤柱的整体稳定性较好。
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, authorsList=王虹玉, 程志恒, 王朋, 陈亮, 曲晓明, 郭凯)}, authors=[Author(id=1167816052785296311, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=whyu@ncist.edu.cn, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1167816052877571005, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, authorId=1167816052785296311, language=EN, stringName=Hongyu WANG, firstName=Hongyu, middleName=null, lastName=WANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 2, address=
1 School of Emergency Management and Safety Engineering,China University of Mining and Technology (Beijing),Beijing 100083,China
2 School of Grammar and Law,North China Institute of Science and Technology,Langfang Hebei 065201,China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1167816052961457087, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, authorId=1167816052785296311, language=CN, stringName=王虹玉, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 2, address=
1 中国矿业大学(北京) 应急管理与安全工程学院,北京 100083
2 华北科技学院 文法学院,河北 廊坊 065201, bio={"content":"
王虹玉 (1982—),女,江西婺源人,博士研究生,副教授,主要研究方向为安全管理与技术、安全生产法等。E-mail:whyu@ncist.edu.cn。
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王虹玉 (1982—),女,江西婺源人,博士研究生,副教授,主要研究方向为安全管理与技术、安全生产法等。E-mail:whyu@ncist.edu.cn。
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1 中国矿业大学(北京) 应急管理与安全工程学院,北京 100083)]), AuthorCompany(id=1167816052416197536, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, xref=2, ext=[AuthorCompanyExt(id=1167816052420391841, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, companyId=1167816052416197536, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 School of Grammar and Law,North China Institute of Science and Technology,Langfang Hebei 065201,China), AuthorCompanyExt(id=1167816052428780450, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, companyId=1167816052416197536, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 华北科技学院 文法学院,河北 廊坊 065201)])]), Author(id=1167816053036954563, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, 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=1167816053104063431, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, authorId=1167816053036954563, language=EN, stringName=Zhiheng CHENG, firstName=Zhiheng, middleName=null, lastName=CHENG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
3, address=
3 School of Mine Safety,North China Institute of Science and Technology,Langfang Hebei 065201,China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1167816053183755209, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, authorId=1167816053036954563, language=CN, stringName=程志恒, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
3, address=
3 华北科技学院 矿山安全学院,河北 廊坊 065201, bio={"content":"
程志恒,副研究员
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程志恒,副研究员
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3 School of Mine Safety,North China Institute of Science and Technology,Langfang Hebei 065201,China), AuthorCompanyExt(id=1167816052495889318, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, companyId=1167816052483306404, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3 华北科技学院 矿山安全学院,河北 廊坊 065201)])]), Author(id=1167816053238281164, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, orderNo=2, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=706849319@qq.com, emailSecond=null, emailThird=null, correspondingAuthor=1, authorType=1, ext={EN=AuthorExt(id=1167816053317972945, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, authorId=1167816053238281164, language=EN, stringName=Peng WANG, firstName=Peng, middleName=null, lastName=WANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
3, **, address=
3 School of Mine Safety,North China Institute of Science and Technology,Langfang Hebei 065201,China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1167816053385081812, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, authorId=1167816053238281164, language=CN, stringName=王朋, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
3, **, address=
3 华北科技学院 矿山安全学院,河北 廊坊 065201, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1167816052483306404, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, xref=3, ext=[AuthorCompanyExt(id=1167816052491695013, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, companyId=1167816052483306404, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3 School of Mine Safety,North China Institute of Science and Technology,Langfang Hebei 065201,China), AuthorCompanyExt(id=1167816052495889318, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, companyId=1167816052483306404, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3 华北科技学院 矿山安全学院,河北 廊坊 065201)])]), Author(id=1167816053452190678, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, 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=1167816053523493850, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, authorId=1167816053452190678, language=EN, stringName=Liang CHEN, firstName=Liang, middleName=null, lastName=CHEN, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
3, address=
3 School of Mine Safety,North China Institute of Science and Technology,Langfang Hebei 065201,China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1167816053611574237, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, authorId=1167816053452190678, language=CN, stringName=陈亮, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
3, address=
3 华北科技学院 矿山安全学院,河北 廊坊 065201, bio={"content":"
陈亮,副研究员
"}, bioImg=null, bioContent=
陈亮,副研究员
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3 School of Mine Safety,North China Institute of Science and Technology,Langfang Hebei 065201,China), AuthorCompanyExt(id=1167816052495889318, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, companyId=1167816052483306404, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3 华北科技学院 矿山安全学院,河北 廊坊 065201)])]), Author(id=1167816053661905889, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, 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=1167816053749986276, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, authorId=1167816053661905889, language=EN, stringName=Xiaoming QU, firstName=Xiaoming, middleName=null, lastName=QU, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
4, address=
4 China Coal Science and Technology Group Shenyang Research Institute Co.,Ltd.,Shenyang Liaoning 113122,China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1167816053812900839, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, authorId=1167816053661905889, language=CN, stringName=曲晓明, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
4, address=
4 中煤科工集团沈阳研究院有限公司,辽宁 沈阳 113122, bio={"content":"
曲晓明,高级工程师
"}, bioImg=null, bioContent=
曲晓明,高级工程师
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4 中煤科工集团沈阳研究院有限公司,辽宁 沈阳 113122)])]), Author(id=1167816053938729963, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, 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=1167816054026810349, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, authorId=1167816053938729963, language=EN, stringName=Kai GUO, firstName=Kai, middleName=null, lastName=GUO, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
5, address=
5 School of Civil and Resources Engineering,University of Science and Technology Beijing,Beijing 100083,China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1167816054102307823, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, authorId=1167816053938729963, language=CN, stringName=郭凯, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
5, address=
5 北京科技大学 土木与资源工程学院,北京 100083, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1167816052705604527, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, xref=5, ext=[AuthorCompanyExt(id=1167816052709798832, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, companyId=1167816052705604527, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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1 中国矿业大学(北京) 应急管理与安全工程学院,北京 100083)]), AuthorCompany(id=1167816052416197536, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, xref=2, ext=[AuthorCompanyExt(id=1167816052420391841, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, companyId=1167816052416197536, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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2 华北科技学院 文法学院,河北 廊坊 065201)]), AuthorCompany(id=1167816052483306404, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, xref=3, ext=[AuthorCompanyExt(id=1167816052491695013, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, companyId=1167816052483306404, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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3 华北科技学院 矿山安全学院,河北 廊坊 065201)]), AuthorCompany(id=1167816052613329834, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, xref=4, ext=[AuthorCompanyExt(id=1167816052617524139, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, companyId=1167816052613329834, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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4 中煤科工集团沈阳研究院有限公司,辽宁 沈阳 113122)]), AuthorCompany(id=1167816052705604527, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, xref=5, ext=[AuthorCompanyExt(id=1167816052709798832, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, companyId=1167816052705604527, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
5 School of Civil and Resources Engineering,University of Science and Technology Beijing,Beijing 100083,China), AuthorCompanyExt(id=1167816052718187441, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, companyId=1167816052705604527, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
5 北京科技大学 土木与资源工程学院,北京 100083)])], figs=[ArticleFig(id=1167816055180242962, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, language=EN, label=Fig.1, caption=
5-1 Comprehensive pillar diagram of coal seam, figureFileSmall=urMoU3U/4+Q7gvf2hZJQhg==, figureFileBig=WuiVmt/ZK/kFFzqpYX3WBA==, tableContent=null), ArticleFig(id=1167816055234768916, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, language=CN, label=图1, caption=
5-1煤层综合柱状, figureFileSmall=urMoU3U/4+Q7gvf2hZJQhg==, figureFileBig=WuiVmt/ZK/kFFzqpYX3WBA==, tableContent=null), ArticleFig(id=1167816055280906261, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, language=EN, label=Fig.2, caption=
Structure of coal pillars and overlying rock mass during tunnel excavation, figureFileSmall=flq3VGoQQ06G1IuWWpAAOQ==, figureFileBig=nmd1bTMukLU/oVzga+u8XQ==, tableContent=null), ArticleFig(id=1167816055335432215, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, language=CN, label=图2, caption=
巷道掘进期间区段煤柱与上覆岩体结构, figureFileSmall=flq3VGoQQ06G1IuWWpAAOQ==, figureFileBig=nmd1bTMukLU/oVzga+u8XQ==, tableContent=null), ArticleFig(id=1167816055406735385, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, language=EN, label=Fig.3, caption=
Schematic diagram of structural changes in coal pillars and overlying strata during upper section mining period, figureFileSmall=DZVqmf/YSRzI6krxRC5lEQ==, figureFileBig=cZ9Mz6kIw801G+IUwisUzQ==, tableContent=null), ArticleFig(id=1167816055473844251, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, language=CN, label=图3, caption=
上区段开采期间煤柱与上覆岩层结构变化, figureFileSmall=DZVqmf/YSRzI6krxRC5lEQ==, figureFileBig=cZ9Mz6kIw801G+IUwisUzQ==, tableContent=null), ArticleFig(id=1167816055532564509, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, language=EN, label=Fig.4, caption=
Structural changes in coal pillars and overlying strata during mining period of this section, figureFileSmall=HCfGaCazchP8MWMY6q/Y1A==, figureFileBig=IpKTnWjsuvlJPzXjpicGrQ==, tableContent=null), ArticleFig(id=1167816055599673375, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, language=CN, label=图4, caption=
本区段开采期间煤柱与上覆岩层结构变化, figureFileSmall=HCfGaCazchP8MWMY6q/Y1A==, figureFileBig=IpKTnWjsuvlJPzXjpicGrQ==, tableContent=null), ArticleFig(id=1167816055654199329, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, language=EN, label=Fig.5, caption=
Stress variation of coal pillar, figureFileSmall=08vaMWf3sqcaHMUQH2yfaA==, figureFileBig=G8olW4SWgEqOB6//G/qhcw==, tableContent=null), ArticleFig(id=1167816055712919587, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, language=CN, label=图5, caption=
煤柱应力变化特征, figureFileSmall=08vaMWf3sqcaHMUQH2yfaA==, figureFileBig=G8olW4SWgEqOB6//G/qhcw==, tableContent=null), ArticleFig(id=1167816055763251237, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, language=EN, label=Fig.6, caption=
Characteristics of stress distribution inside section coal pillars, figureFileSmall=Bz3cH/Ha9lbX6jMojxyP8A==, figureFileBig=8j60KdCrwNoST84Z6UBA8w==, tableContent=null), ArticleFig(id=1167816055851331623, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, language=CN, label=图6, caption=
区段煤柱内部应力分布特征 注:Ⅰ为破裂区;Ⅱ为塑性区;Ⅲ为弹性应力增加区;K为应力集中系数;γ为上覆岩层平均容重,kN/m3;H为煤层埋深,m;B为区段煤柱宽度,m。
, figureFileSmall=Bz3cH/Ha9lbX6jMojxyP8A==, figureFileBig=8j60KdCrwNoST84Z6UBA8w==, tableContent=null), ArticleFig(id=1167816055910051881, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, language=EN, label=Fig.7, caption=
Section coal pillar load estimation model, figureFileSmall=OO5YCvAcXimhHZ8gcZfbxg==, figureFileBig=K/Z0BHJA7x0DkXeAaVqgjA==, tableContent=null), ArticleFig(id=1167816055998132268, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, language=CN, label=图7, caption=
区段煤柱载荷估算模型 注:D为50104工作面采空区宽度,m;δ为50104工作面采空区上覆岩层垮落角,(°)。
, figureFileSmall=OO5YCvAcXimhHZ8gcZfbxg==, figureFileBig=K/Z0BHJA7x0DkXeAaVqgjA==, tableContent=null), ArticleFig(id=1167816056065241134, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, language=EN, label=Fig.8, caption=
Stereoscopic diagram, figureFileSmall=OLMhgw7uGEhsM+7GocMd9Q==, figureFileBig=K5ROhmo9i3r0jObmuQi7Kg==, tableContent=null), ArticleFig(id=1167816056123961392, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, language=CN, label=图8, caption=
立体模型, figureFileSmall=OLMhgw7uGEhsM+7GocMd9Q==, figureFileBig=K5ROhmo9i3r0jObmuQi7Kg==, tableContent=null), ArticleFig(id=1167816056199458866, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, language=EN, label=Fig.9, caption=
Plane model diagram, figureFileSmall=rfSx4p62mEyekB49MG4zJQ==, figureFileBig=MmsuElqzjOC9mzsgch+NwA==, tableContent=null), ArticleFig(id=1167816056258179124, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, language=CN, label=图9, caption=
平面模型, figureFileSmall=rfSx4p62mEyekB49MG4zJQ==, figureFileBig=MmsuElqzjOC9mzsgch+NwA==, tableContent=null), ArticleFig(id=1167816056333676598, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, language=EN, label=Fig.10, caption=
Coal pillar plastic zone evolution during advancing process of 50104 working face, figureFileSmall=N2pILLr+ezLO7ZCP0bWDgQ==, figureFileBig=V2GK3AqlVe6V7eUPg74/4w==, tableContent=null), ArticleFig(id=1167816056413368376, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, language=CN, label=图10, caption=
50104工作面推进过程区段煤柱塑性区演化, figureFileSmall=N2pILLr+ezLO7ZCP0bWDgQ==, figureFileBig=V2GK3AqlVe6V7eUPg74/4w==, tableContent=null), ArticleFig(id=1167816056480477242, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, language=EN, label=Fig.11, caption=
Diagram of coal pillar stress evolution process in advancing process of 50104 working face, figureFileSmall=RYc9HqT5E/sSNVMVzK98GA==, figureFileBig=75FJYo0qlH1UBeakiWy0Tg==, tableContent=null), ArticleFig(id=1167816056568557628, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, language=CN, label=图11, caption=
50104工作面推进过程区段煤柱应力演化过程, figureFileSmall=RYc9HqT5E/sSNVMVzK98GA==, figureFileBig=75FJYo0qlH1UBeakiWy0Tg==, tableContent=null), ArticleFig(id=1167816056648249406, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, language=EN, label=Fig.12, caption=
50104 layout of measuring stations and lines on working face, figureFileSmall=oMx82VhiN1CAzyKOffOa3A==, figureFileBig=BrkeBbyTQUsHJZVi+z5GYg==, tableContent=null), ArticleFig(id=1167816056711163968, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, language=CN, label=图12, caption=
50104工作面测站与测线布置, figureFileSmall=oMx82VhiN1CAzyKOffOa3A==, figureFileBig=BrkeBbyTQUsHJZVi+z5GYg==, tableContent=null), ArticleFig(id=1167816056807632962, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, language=EN, label=Fig.13, caption=
Change curve of working resistance measured byNo.31 bracket of upper measuring station, figureFileSmall=lXFScliSaNEsuSarK9PebA==, figureFileBig=dhP/Ty/IDIs9N302ciOB1A==, tableContent=null), ArticleFig(id=1167816056870547524, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, language=CN, label=图13, caption=
上部测站31号支架实测工作阻力变化曲线, figureFileSmall=lXFScliSaNEsuSarK9PebA==, figureFileBig=dhP/Ty/IDIs9N302ciOB1A==, tableContent=null), ArticleFig(id=1167816056925073478, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, language=EN, label=Table 1, caption=
Physical and mechanical parameters of coal and rock
, figureFileSmall=null, figureFileBig=null, tableContent=
| 序号 | 岩石名称 | 层厚/m | 密度/(kg·m-3) | 内摩擦角/(°) | 黏聚力/MPa | 抗拉强度/MPa | 弹性模量/GPa |
| 1 | 黄土 | 12.00 | 1 700 | 18 | 0.1 | 0.2 | 1.2 |
| 2 | 黏土 | 22.00 | 1 800 | 22 | 0.15 | 0.5 | 1.4 |
| 3 | 粉砂岩 | 4.00 | 2 350 | 25 | 2.75 | 1.51 | 19.5 |
| 5 | 砂质泥岩 | 9.00 | 2 280 | 36 | 2.16 | 0.75 | 5.42 |
| 6 | 粉砂岩 | 10.00 | 2 350 | 25 | 2.75 | 1.51 | 19.5 |
| 7 | 细粒砂岩 | 6.00 | 2 870 | 42 | 3.42 | 1.29 | 33.1 |
| 8 | 中粒砂岩 | 19.28 | 2 550 | 37 | 4.0 | 1.20 | 5.99 |
| 9 | 5-1煤 | 4.72 | 1 450 | 34 | 1.25 | 0.19 | 5.3 |
| 10 | 粉砂岩 | 3.00 | 2 350 | 25 | 2.75 | 1.51 | 19.5 |
), ArticleFig(id=1167816057021542471, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, language=CN, label=表1, caption=
煤岩物理力学参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 序号 | 岩石名称 | 层厚/m | 密度/(kg·m-3) | 内摩擦角/(°) | 黏聚力/MPa | 抗拉强度/MPa | 弹性模量/GPa |
| 1 | 黄土 | 12.00 | 1 700 | 18 | 0.1 | 0.2 | 1.2 |
| 2 | 黏土 | 22.00 | 1 800 | 22 | 0.15 | 0.5 | 1.4 |
| 3 | 粉砂岩 | 4.00 | 2 350 | 25 | 2.75 | 1.51 | 19.5 |
| 5 | 砂质泥岩 | 9.00 | 2 280 | 36 | 2.16 | 0.75 | 5.42 |
| 6 | 粉砂岩 | 10.00 | 2 350 | 25 | 2.75 | 1.51 | 19.5 |
| 7 | 细粒砂岩 | 6.00 | 2 870 | 42 | 3.42 | 1.29 | 33.1 |
| 8 | 中粒砂岩 | 19.28 | 2 550 | 37 | 4.0 | 1.20 | 5.99 |
| 9 | 5-1煤 | 4.72 | 1 450 | 34 | 1.25 | 0.19 | 5.3 |
| 10 | 粉砂岩 | 3.00 | 2 350 | 25 | 2.75 | 1.51 | 19.5 |
), ArticleFig(id=1167816057097039944, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, language=EN, label=Table 2, caption=
50104 working face pressure criterion
, figureFileSmall=null, figureFileBig=null, tableContent=
| 测站 | 支架 | 初撑力/kN | 最大工作阻力/kN | 加权平均工作阻力/kN |
平均值 | 均方差 Spo | 判据 p'0= +Sp0 | 平均值 | 均方差 | 判据 p'm= + | 平均值 | 均方差 | 判据 p't= + |
上部 测站 | 31号 | 4 594.7 | 872 | 5 466.7 | 5 920.8 | 423 | 6 343.8 | 5 275.8 | 589 | 5 864.8 |
| 35号 | 3 611.5 | 729.5 | 4 341 | 5 870.1 | 748 | 6 618.1 | 4 941.1 | 939.7 | 5 880.8 |
中部 测站 | 18号 | 4 718.1 | 716.7 | 5 434.8 | 5 808.9 | 436 | 6 244.9 | 4 888.9 | 765 | 5 653.8 |
| 24号 | 3 824.7 | 1 166.2 | 4 990.9 | 5 409 | 1 046.3 | 6 455.3 | 4 027.3 | 1 173.5 | 5 200.8 |
下部 测站 | 5号 | 3 468.9 | 628.1 | 4 097 | 5 851.7 | 750.5 | 6 602.2 | 4 795.6 | 789.2 | 5 584.8 |
| 11号 | 3 376.5 | 703.8 | 4 080.3 | 6 013 | 496.2 | 6 509.2 | 5 090.8 | 930.8 | 6 021.6 |
), ArticleFig(id=1167816057185120329, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735804223800069, language=CN, label=表2, caption=
50104工作面基本顶来压判据
, figureFileSmall=null, figureFileBig=null, tableContent=
| 测站 | 支架 | 初撑力/kN | 最大工作阻力/kN | 加权平均工作阻力/kN |
平均值 | 均方差 Spo | 判据 p'0= +Sp0 | 平均值 | 均方差 | 判据 p'm= + | 平均值 | 均方差 | 判据 p't= + |
上部 测站 | 31号 | 4 594.7 | 872 | 5 466.7 | 5 920.8 | 423 | 6 343.8 | 5 275.8 | 589 | 5 864.8 |
| 35号 | 3 611.5 | 729.5 | 4 341 | 5 870.1 | 748 | 6 618.1 | 4 941.1 | 939.7 | 5 880.8 |
中部 测站 | 18号 | 4 718.1 | 716.7 | 5 434.8 | 5 808.9 | 436 | 6 244.9 | 4 888.9 | 765 | 5 653.8 |
| 24号 | 3 824.7 | 1 166.2 | 4 990.9 | 5 409 | 1 046.3 | 6 455.3 | 4 027.3 | 1 173.5 | 5 200.8 |
下部 测站 | 5号 | 3 468.9 | 628.1 | 4 097 | 5 851.7 | 750.5 | 6 602.2 | 4 795.6 | 789.2 | 5 584.8 |
| 11号 | 3 376.5 | 703.8 | 4 080.3 | 6 013 | 496.2 | 6 509.2 | 5 090.8 | 930.8 | 6 021.6 |
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