Article(id=1281616689053807325, tenantId=1146029695717560320, journalId=1146031787341344770, issueId=1281616655499366465, articleNumber=null, orderNo=null, doi=10.16265/j.cnki.issn1003-3033.2026.02.1508, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1733760000000, receivedDateStr=2024-12-10, revisedDate=1766332800000, revisedDateStr=2025-12-22, acceptedDate=null, acceptedDateStr=null, onlineDate=1783490829957, onlineDateStr=2026-07-08, pubDate=1772208000000, pubDateStr=2026-02-28, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1783490829957, onlineIssueDateStr=2026-07-08, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1783490829957, creator=13701087609, updateTime=1783490829957, updator=13701087609, issue=Issue{id=1281616655499366465, tenantId=1146029695717560320, journalId=1146031787341344770, year='2026', volume='36', issue='2', pageStart='1', pageEnd='270', issueExtLink='null', onlineDate='null', pubDate='1772208000000', pubDateStr='2026-02-28', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1783490821957, creator='13701087609', updateTime=1783588693138, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1282027157069218127, tenantId=1146029695717560320, journalId=1146031787341344770, issueId=1281616655499366465, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1282027157069218128, tenantId=1146029695717560320, journalId=1146031787341344770, issueId=1281616655499366465, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=153, endPage=162, ext={EN=ArticleExt(id=1281616689288688350, articleId=1281616689053807325, tenantId=1146029695717560320, journalId=1146031787341344770, language=EN, title=Reconstruction and analysis of PNM for free accumulation of rock blocks in fully mechanized top-coal caving goaf of coal mines, columnId=1277328337617941059, journalTitle=China Safety Science Journal, columnName=Safety Technology and Engineering, runingTitle=null, highlight=null, articleAbstract=

To accurately characterize freely accumulated rock blocks and pore space properties in fully mechanized top-coal caving goafs, a PNM was introduced. Slice tests of free rock block accumulation in fixed space and corresponding image processing were conducted. Pore network information was extracted using Open-source libraries like OpenPNM and PoreSpy, followed by 3D visual reconstruction and quantitative characterization of PNM to analyze topological geometric and statistical features of the reconstructed model. Results show that with increasing freely accumulated rock block size in fixed space, pore-throat size increases significantly: the average diameters of pores and throats rise from 2.46 mm and 1.41 mm to 3.85 mm and 2.73 mm, respectively, with weak correlation to throat length. The numbers of pores and throats decrease from 3 146 and 6 428 to 1 043 and 2 225, respectively, and the pore coordination numbers concentrate between 2 and 5 (peak at 2). The proportion of pore space increases, and the connectivity of porous media is enhanced. The topological property parameters are approximately positively skewed distribution as a whole, with the peak shewed to the left and the concentrated values in the dataset being relatively small. Two-point correlation function calculations reveal that the relative errors of porosity between the original image data and the reconstructed model are less than 2.5%.

, authors=Hongshuo ZHANG^{1, 2}, Ke GAO^{**, 1, 2}, Jiankang YU^{1, 2}, Qiwen LI^{1, 2}, authorsList=Hongshuo ZHANG, Ke GAO, Jiankang YU, Qiwen LI, authorCompany=null, correspAuthors=Ke GAO, 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, fund=null), CN=ArticleExt(id=1281616691260011233, articleId=1281616689053807325, tenantId=1146029695717560320, journalId=1146031787341344770, language=CN, title=煤矿综放采空区岩块自由堆积PNM重构分析, columnId=1277328337940902469, journalTitle=中国安全科学学报, columnName=安全技术与工程, runingTitle=null, highlight=null, articleAbstract=

为准确描述煤矿综放采空区内部自由堆积岩块状态及孔隙空间特性，引入孔隙网络模型（PNM），开展固定空间内岩块自由堆积切片试验和图像处理，利用OpenPNM和PoreSpy等开源包提取孔隙网络信息，三维可视化重构和定量表征孔隙网络模型，分析重构模型拓扑结构的几何特性和统计特征。结果表明：随着固定空间内自由堆积岩块块度的增加，孔喉尺寸明显增大，平均直径由2.46和1.41 mm分别增至3.85和2.73 mm，与喉道长度的相关性较弱，其中孔喉数目由3 146和6 428分别减少至1 043和2 225，孔隙配位数集中在2~5，峰值为2，孔隙空间所占比例增大，多孔介质连通性增强；各拓扑性质参数整体上近似呈现正偏态分布，波峰偏左且数据集中值较小；计算两点相关函数得出原始图像数据和重建模型的孔隙度相对误差均在2.5%以内。

, authors=张洪硕^{1, 2}, 高科教授^{**, 1, 2}, 于健康教授^{1, 2}, 李启文^{1, 2}, authorsList=张洪硕, 高科教授, 于健康教授, 李启文, authorCompany=null, correspAuthors=高科教授, authorNote=, correspAuthorsNote=, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=x0622PjY7h0luIVio0dK5w==, magXml=nfZzrgIrODB4pDLgjUtP/w==, pdfUrl=null, pdf=JVCdoQ+QWfQf5BTMbrtX4Q==, pdfFileSize=2312681, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=dnuGdtOmNqXb7x6nTjUyGA==, mapNumber=null, fund=null)}, authors=[Author(id=1281616691637498601, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1281616689053807325, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=1914785247@qq.com, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1281616691717190380, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1281616689053807325, authorId=1281616691637498601, language=EN, stringName=Hongshuo ZHANG, firstName=Hongshuo, middleName=null, lastName=ZHANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=^{1, 2}, address=¹College of Safety Science and Engineering, Liaoning Technical University, Huludao Liaoning 125105, China
²Key Laboratory of Mine Thermodynamic Disasters and Control of Ministry of Education, Liaoning Technical University, Huludao Liaoning 125105, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1281616691775910637, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1281616689053807325, authorId=1281616691637498601, language=CN, stringName=张洪硕, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=^{1, 2}, address=¹辽宁工程技术大学 安全科学与工程学院，辽宁 葫芦岛 125105
²辽宁工程技术大学 矿山热动力灾害与防治教育部重点实验室，辽宁 葫芦岛 125105, bio={"content":"

张洪硕（2000—），男，辽宁沈阳人，硕士研究生，主要研究方向为煤矿采空区多孔介质。E-mail:1914785247@qq.com。

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张洪硕（2000—），男，辽宁沈阳人，硕士研究生，主要研究方向为煤矿采空区多孔介质。E-mail:1914785247@qq.com。

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