Article(id=1246028559836360890, tenantId=1146029695717560320, journalId=1241755870837649424, issueId=1246028557319783390, articleNumber=null, orderNo=null, doi=10.19636/j.cnki.cjsm42-1250/o3.2023.054, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1698076800000, receivedDateStr=2023-10-24, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1775005958756, onlineDateStr=2026-04-01, pubDate=1719244800000, pubDateStr=2024-06-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1775005958756, onlineIssueDateStr=2026-04-01, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1775005958756, creator=13701087609, updateTime=1775005958756, updator=13701087609, issue=Issue{id=1246028557319783390, tenantId=1146029695717560320, journalId=1241755870837649424, year='2024', volume='45', issue='3', pageStart='289', pageEnd='426', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1775005958156, creator=13701087609, updateTime=1775006058227, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1246028977123471371, tenantId=1146029695717560320, journalId=1241755870837649424, issueId=1246028557319783390, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1246028977123471372, tenantId=1146029695717560320, journalId=1241755870837649424, issueId=1246028557319783390, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=363, endPage=378, ext={EN=ArticleExt(id=1246028560578752703, articleId=1246028559836360890, tenantId=1146029695717560320, journalId=1241755870837649424, language=EN, title=Optimization Study on the Width of Narrow Coal Pillar along the Goaf Tunnel with Peridynamics, columnId=1244229834482757770, journalTitle=Chinese Journal of Solid Mechanics, columnName=Research Paper, runingTitle=null, highlight=null, articleAbstract=
Coal-rock mass exhibits extremely complex and discontinuous deformation, as well as heterogeneous characteristics. Traditional numerical methods, such as the finite element method (FEM), are difficult to accurately describe the entire process of damage accumulation and progressive failure. Based on the non-local peridynamics (PD) method, the corresponding micro-modulus function and critical elongation are derived by reconstructing the kernel function of the constitutive force function. This approach introduces heterogeneity by incorporating random pre-breaking bonds into the homogeneous discrete model. As a result, peridynamics can be applied to the simulation and analysis of deformation and failure of natural heterogeneous materials and structures. Taking the Fucun coal mine as an example, a heterogeneous peridynamics simulation model is established. The deformation and failure laws of the roadway's surrounding rock and failure characteristics of coal pillars with different widths are analyzed. It is found that when the width of the coal pillar is 5 m, the roadway is at the edge of the extrusion deformation zone. The significant change in abutment pressure results in severe deformation and damage to the roadway's surrounding rock. When the width of the coal pillar increases to 6 m and 7 m, the roadway's surrounding rock gradually moves away from the extrusion deformation area. Consequently, the influence of the basic roof rotation movement in the goaf on the coal pillar weakens, resulting in reduced deformation and damage to the roadway. However, when the width of the coal pillar continues to increase, the roadway's surrounding rock enters an area where the stress increases. The high bearing pressure from the external stress field leads to an increase in deformation and damage to the roadway. Considering the deformation and damage characteristics of the roadway's surrounding rock and coal pillar, a reserved width of 7 m for the coal pillar is finally determined. The proposed peridynamics simulation model provides a new and effective simulation tool for optimizing the size of coal pillars in gob-side entry driving.
, correspAuthors=Qing Zhang, 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=Shijun Zhao, Qing Zhang, Weizhao Zhang, Yusong Miao, Xinbo Zhao), CN=ArticleExt(id=1246028570963849747, articleId=1246028559836360890, tenantId=1146029695717560320, journalId=1241755870837649424, language=CN, title=基于近场动力学的窄煤柱宽度优化研究, columnId=1241831201896469478, journalTitle=固体力学学报, columnName=研究论文, runingTitle=null, highlight=null, articleAbstract=
煤岩体具有极为复杂的非连续变形、非均质性特征,以有限元法为代表的传统数值方法难以准确描述其损伤累积、渐进破坏全过程. 基于非局部近场动力学方法(Peridynamics,PD),通过重构本构力函数核函数,推导了相应的微模量函数与临界伸长率. 在均匀离散模型中引入用随机预断“键”表征的非均质性,使近场动力学方法能够适用于天然非均质材料与结构的非连续变形破坏分析. 以付村煤矿为例,建立了近场动力学数值计算模型,分析了不同煤柱宽度条件下巷道围岩变形、破坏规律以及煤柱破损特征. 研究发现:当煤柱宽度为5 m时,巷道煤壁处于挤压变形区边缘,由于支承压力剧烈变化,巷帮变形破损严重;煤柱宽度增大至6 m和7 m时,巷道煤壁逐渐远离挤压变形区,煤柱受到采空区基本顶回转运动的影响相对减弱,巷帮变形和破损量较小;当煤柱宽度继续增大,巷道围岩将进入到应力增高区域,由于外应力场支承压力较大,巷帮变形及破损量会随之增大. 综合考虑巷道围岩变形破坏、煤柱破损特征,最终确定煤柱留设宽度为7 m. 本文工作表明,提出的煤岩体破损分析的近场动力学模型能够有效描述煤岩体的损伤累积和渐进破坏过程,为沿空掘巷护巷煤柱尺寸优化提供了新的计算工具.
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122: 104059., articleTitle=A peridynamic model for brittle damage and fracture in porous materials, refAbstract=null)], funds=[Fund(id=1246028578580706088, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028559836360890, awardId=12302264; 11932006; 52104004, language=CN, fundingSource=国家自然科学基金项目(12302264; 11932006; 52104004), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1246028571181953564, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028559836360890, xref=
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Schematic diagram of interaction between material points in PD theory, figureFileSmall=P4MQ7Wgn03Bv5wIaobsIXA==, figureFileBig=vnRW28uOI4MGQ70dE0Vphw==, tableContent=null), ArticleFig(id=1246028574227018403, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028559836360890, language=CN, label=图1, caption=
PD理论中物质点对之间相互作用, figureFileSmall=P4MQ7Wgn03Bv5wIaobsIXA==, figureFileBig=vnRW28uOI4MGQ70dE0Vphw==, tableContent=null), ArticleFig(id=1246028574449316524, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028559836360890, language=EN, label=Fig.2, caption=
Schematic diagram of failure mode based on critical elongation, figureFileSmall=Nm/v7sTezGJjNGq4uSadRA==, figureFileBig=ijEVQ2RyI2i4EifbHusjOg==, tableContent=null), ArticleFig(id=1246028574633865905, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028559836360890, language=CN, label=图2, caption=
基于“键”临界伸长率的失效模式, figureFileSmall=Nm/v7sTezGJjNGq4uSadRA==, figureFileBig=ijEVQ2RyI2i4EifbHusjOg==, tableContent=null), ArticleFig(id=1246028574713557685, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028559836360890, language=EN, label=Fig.3, caption=
Schematic diagram of fracture energy density simulation for fracture surface, figureFileSmall=F/Wsj+dth+0T+pGryGcROA==, figureFileBig=xt1jlO4FZcQ7hLi0XAklKQ==, tableContent=null), ArticleFig(id=1246028574830998202, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028559836360890, language=CN, label=图3, caption=
穿过断裂面“键”的断裂能密度计算示意图, figureFileSmall=F/Wsj+dth+0T+pGryGcROA==, figureFileBig=xt1jlO4FZcQ7hLi0XAklKQ==, tableContent=null), ArticleFig(id=1246028574927467197, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028559836360890, language=EN, label=Fig.4, caption=
Schematic diagram of solution domain of material points xi in PD, figureFileSmall=GjY80+efz9HKh/X3dV0/lQ==, figureFileBig=z8Ql1on8INTowpKEuv/u1A==, tableContent=null), ArticleFig(id=1246028575028130497, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028559836360890, language=CN, label=图4, caption=
PD中物质点xi的求解域, figureFileSmall=GjY80+efz9HKh/X3dV0/lQ==, figureFileBig=z8Ql1on8INTowpKEuv/u1A==, tableContent=null), ArticleFig(id=1246028575132988100, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028559836360890, language=EN, label=Fig.5, caption=
Simulation of the width of narrow pillar of gob-side entry driving, figureFileSmall=t/kj+Y8KKs9AwqydFpiT7w==, figureFileBig=e3pIwnu36lYhTEZE0MN3Ew==, tableContent=null), ArticleFig(id=1246028575242040007, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028559836360890, language=CN, label=图5, caption=
沿空掘巷合理护巷煤柱尺寸计算, figureFileSmall=t/kj+Y8KKs9AwqydFpiT7w==, figureFileBig=e3pIwnu36lYhTEZE0MN3Ew==, tableContent=null), ArticleFig(id=1246028575346897610, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028559836360890, language=EN, label=Fig.6, caption=
Schematic diagram of bond random breaking in PD simulation model, figureFileSmall=4JF3dyqFLJIvxuLyTqfeVQ==, figureFileBig=eEl7Luu4cyk2xfD27vqr7A==, tableContent=null), ArticleFig(id=1246028575464338126, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028559836360890, language=CN, label=图6, caption=
PD模型中随机断“键”示意图, figureFileSmall=4JF3dyqFLJIvxuLyTqfeVQ==, figureFileBig=eEl7Luu4cyk2xfD27vqr7A==, tableContent=null), ArticleFig(id=1246028575548224210, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028559836360890, language=EN, label=Fig.7, caption=
Degree of material heterogeneity characterized by bond random pre-breaking, figureFileSmall=1R7GJSU/YvRzdrtNh7z36A==, figureFileBig=0aFDcYx6EyuqQsPcRpPkBQ==, tableContent=null), ArticleFig(id=1246028575619527382, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028559836360890, language=CN, label=图7, caption=
用随机预断“键”表征材料非均质程度, figureFileSmall=1R7GJSU/YvRzdrtNh7z36A==, figureFileBig=0aFDcYx6EyuqQsPcRpPkBQ==, tableContent=null), ArticleFig(id=1246028575682441946, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028559836360890, language=EN, label=Fig.8, caption=
Flow chart for calculation of excavation release load in PD, figureFileSmall=vbhTrvScsyaXpozo5ZLAOA==, figureFileBig=Pi+7QWU8FvOz928JuX6CFg==, tableContent=null), ArticleFig(id=1246028575757939420, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028559836360890, language=CN, label=图8, caption=
PD中计算开挖释放荷载流程图, figureFileSmall=vbhTrvScsyaXpozo5ZLAOA==, figureFileBig=Pi+7QWU8FvOz928JuX6CFg==, tableContent=null), ArticleFig(id=1246028575862797022, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028559836360890, language=EN, label=Fig.9, caption=
Schematic diagram of simulation model for deformation and failure of surrounding rock in gob-side entry, figureFileSmall=cKdo3Tj0hvl14DyJ9TZaUQ==, figureFileBig=1/jIsHZWG8CDHYxp27L2Lg==, tableContent=null), ArticleFig(id=1246028575992820450, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028559836360890, language=CN, label=图9, caption=
沿空巷道围岩变形破坏分析的计算模型, figureFileSmall=cKdo3Tj0hvl14DyJ9TZaUQ==, figureFileBig=1/jIsHZWG8CDHYxp27L2Lg==, tableContent=null), ArticleFig(id=1246028576080900839, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028559836360890, language=EN, label=Fig.10, caption=
Displacement of gob-side entry surrounding rock with coal pillar width W=5 m, figureFileSmall=F6rDWnhCy3+dsO0/v5hhrA==, figureFileBig=r6jh1bfRlcYhW9EDh4sTYw==, tableContent=null), ArticleFig(id=1246028576177369836, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028559836360890, language=CN, label=图10, caption=
护巷煤柱宽度为5 m时巷道围岩位移分布云图, figureFileSmall=F6rDWnhCy3+dsO0/v5hhrA==, figureFileBig=r6jh1bfRlcYhW9EDh4sTYw==, tableContent=null), ArticleFig(id=1246028576252867308, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028559836360890, language=EN, label=Fig.11, caption=
Displacement of gob-side entry surrounding rock with coal pillar width W=6 m, figureFileSmall=VVZfKf/rjcjL3LRvcelWKA==, figureFileBig=H+jYKatXImP05M9kv9ZSIA==, tableContent=null), ArticleFig(id=1246028576336753390, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028559836360890, language=CN, label=图11, caption=
护巷煤柱宽度为6 m时巷道围岩位移分布云图, figureFileSmall=VVZfKf/rjcjL3LRvcelWKA==, figureFileBig=H+jYKatXImP05M9kv9ZSIA==, tableContent=null), ArticleFig(id=1246028576424833777, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028559836360890, language=EN, label=Fig.12, caption=
Displacement of gob-side entry surrounding rock with coal pillar width W=7 m, figureFileSmall=Ksb4VQ4MA5LQvSEgvnlN6w==, figureFileBig=BiwS+30kIS+AlwBOasj3YQ==, tableContent=null), ArticleFig(id=1246028576504525555, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028559836360890, language=CN, label=图12, caption=
护巷煤柱宽度为7 m时巷道围岩位移分布云图, figureFileSmall=Ksb4VQ4MA5LQvSEgvnlN6w==, figureFileBig=BiwS+30kIS+AlwBOasj3YQ==, tableContent=null), ArticleFig(id=1246028576588411638, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028559836360890, language=EN, label=Fig.13, caption=
Displacement of gob-side entry surrounding rock with coal pillar width W=8 m, figureFileSmall=owJd4RpjgTmoCP98KcP14g==, figureFileBig=HaO6MGSsOhzPRQ2Xo4ZP1A==, tableContent=null), ArticleFig(id=1246028576651326201, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028559836360890, language=CN, label=图13, caption=
护巷煤柱宽度为8 m时巷道围岩位移分布云图, figureFileSmall=owJd4RpjgTmoCP98KcP14g==, figureFileBig=HaO6MGSsOhzPRQ2Xo4ZP1A==, tableContent=null), ArticleFig(id=1246028576726823677, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028559836360890, language=EN, label=Fig.14, caption=
Displacement of gob-side entry surrounding rock with coal pillar width W=9 m, figureFileSmall=qb/o1gvfu1JFXVLpdgjnBg==, figureFileBig=8AMzxbl0WPXZDYDYnuhnTA==, tableContent=null), ArticleFig(id=1246028576810709759, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028559836360890, language=CN, label=图14, caption=
护巷煤柱宽度为9 m时巷道围岩位移分布云图, figureFileSmall=qb/o1gvfu1JFXVLpdgjnBg==, figureFileBig=8AMzxbl0WPXZDYDYnuhnTA==, tableContent=null), ArticleFig(id=1246028576886207235, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028559836360890, language=EN, label=Fig.15, caption=
Displacement of gob-side entry surrounding rock with coal pillar width W=10 m, figureFileSmall=p2ffCpt2g2U3sTCt5+08fw==, figureFileBig=k3+FR/sBTqdDUgCR95/r9Q==, tableContent=null), ArticleFig(id=1246028576965899014, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028559836360890, language=CN, label=图15, caption=
护巷煤柱宽度为10 m时巷道围岩位移分布云图, figureFileSmall=p2ffCpt2g2U3sTCt5+08fw==, figureFileBig=k3+FR/sBTqdDUgCR95/r9Q==, tableContent=null), ArticleFig(id=1246028577053979400, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028559836360890, language=EN, label=Fig.16, caption=
Layout of displacement monitoring points of roadway surrounding rock, figureFileSmall=FnxtZEfnH9s52P22/sqCiQ==, figureFileBig=RU9hUOPafv3tBpzO7lZTYA==, tableContent=null), ArticleFig(id=1246028577167225611, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028559836360890, language=CN, label=图16, caption=
巷道围岩位移监测点布置图, figureFileSmall=FnxtZEfnH9s52P22/sqCiQ==, figureFileBig=RU9hUOPafv3tBpzO7lZTYA==, tableContent=null), ArticleFig(id=1246028577251111696, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028559836360890, language=EN, label=Fig.17, caption=
Vertical displacement curves of gob-side entry roof with different simulation schemes, figureFileSmall=efeEZeU1p+wsKSSuz/sKqQ==, figureFileBig=pMzjU2Sj5QkHnnT6u1gXbw==, tableContent=null), ArticleFig(id=1246028577326609170, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028559836360890, language=CN, label=图17, caption=
不同模拟方案顶板垂直方向变形曲线, figureFileSmall=efeEZeU1p+wsKSSuz/sKqQ==, figureFileBig=pMzjU2Sj5QkHnnT6u1gXbw==, tableContent=null), ArticleFig(id=1246028577485992722, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028559836360890, language=EN, label=Fig.18, caption=
Horizontal deformation curves of gob-side entry sides with different simulation schemes when distance from coal wall is 0.1 m, figureFileSmall=ZyNvjDCiGAzOWqDAT5cyuQ==, figureFileBig=IwjZpj41K4nHwkCF15gW7w==, tableContent=null), ArticleFig(id=1246028577616016149, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028559836360890, language=CN, label=图18, caption=
距离煤壁0.1 m时不同模拟方案巷道两帮变形曲线, figureFileSmall=ZyNvjDCiGAzOWqDAT5cyuQ==, figureFileBig=IwjZpj41K4nHwkCF15gW7w==, tableContent=null), ArticleFig(id=1246028577729262357, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028559836360890, language=EN, label=Fig.19, caption=
Horizontal deformation curves of gob-side entry sides with different simulation schemes when distance from coal wall is 0.6 m, figureFileSmall=e1so7aU3ZKFSHf3rrH5XTg==, figureFileBig=b0nKzXjvcwp02nfYkOaGXA==, tableContent=null), ArticleFig(id=1246028577800565528, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028559836360890, language=CN, label=图19, caption=
距离煤壁0.6 m时不同模拟方案巷道两帮变形曲线, figureFileSmall=e1so7aU3ZKFSHf3rrH5XTg==, figureFileBig=b0nKzXjvcwp02nfYkOaGXA==, tableContent=null), ArticleFig(id=1246028577867674392, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028559836360890, language=EN, label=Fig.20, caption=
Failure modes of coal pillar corresponding under different simulation schemes, figureFileSmall=Q/YK9D2W1JBJSlAGCvjBUQ==, figureFileBig=CSSIRqEqfkTKBx16SLVefQ==, tableContent=null), ArticleFig(id=1246028577938977562, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028559836360890, language=CN, label=图20, caption=
不同模拟方案对应煤柱破坏模式, figureFileSmall=Q/YK9D2W1JBJSlAGCvjBUQ==, figureFileBig=CSSIRqEqfkTKBx16SLVefQ==, tableContent=null), ArticleFig(id=1246028578006086428, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028559836360890, language=EN, label=Fig.21, caption=
Failure modes of gob-side entry surrounding rock under different simulation schemes, figureFileSmall=kGMPoZQpJx9opTqaum0RIA==, figureFileBig=ivNkacui9s7Z/YbT89qNXg==, tableContent=null), ArticleFig(id=1246028578098361118, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028559836360890, language=CN, label=图21, caption=
不同模拟方案对应沿空巷道围岩破坏模式, figureFileSmall=kGMPoZQpJx9opTqaum0RIA==, figureFileBig=ivNkacui9s7Z/YbT89qNXg==, tableContent=null), ArticleFig(id=1246028578173858592, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028559836360890, language=EN, label=Table 1, caption=
Geological conditions of roof and floor of coal seam
, figureFileSmall=null, figureFileBig=null, tableContent=
| 顶底板 | 岩层类别 | 厚度(m) | 岩性特征 |
|---|
| 基本顶 | 细砂岩 | 6.80 | 浅灰色,细粒结构,硅质胶结,成分以石英为主,含有云母片及星点状黄铁矿 |
| 直接顶 | 砂质泥岩 | 2.80 | 灰黑色,含少量植物化石印痕,水平层理明显 |
| 煤层 | 3上煤 | 4.00 | 黑色,以亮煤为主,玻璃光泽 |
| 伪底 | 砂质泥岩 | 0.80 | 浅黑色,砂泥质结构,薄层状 |
| 直接底 | 细砂岩 | 8.80 | 深灰色,水平层理,含植物化石碎片和黄铁矿,裂隙较为发育 |
), ArticleFig(id=1246028578274521890, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028559836360890, language=CN, label=表1, caption=
煤层顶底板岩层地质条件
, figureFileSmall=null, figureFileBig=null, tableContent=
| 顶底板 | 岩层类别 | 厚度(m) | 岩性特征 |
|---|
| 基本顶 | 细砂岩 | 6.80 | 浅灰色,细粒结构,硅质胶结,成分以石英为主,含有云母片及星点状黄铁矿 |
| 直接顶 | 砂质泥岩 | 2.80 | 灰黑色,含少量植物化石印痕,水平层理明显 |
| 煤层 | 3上煤 | 4.00 | 黑色,以亮煤为主,玻璃光泽 |
| 伪底 | 砂质泥岩 | 0.80 | 浅黑色,砂泥质结构,薄层状 |
| 直接底 | 细砂岩 | 8.80 | 深灰色,水平层理,含植物化石碎片和黄铁矿,裂隙较为发育 |
), ArticleFig(id=1246028578370990883, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028559836360890, language=EN, label=Table 2, caption=
Physical and mechanical parameters of coal seam and roof and floor rock layer
, figureFileSmall=null, figureFileBig=null, tableContent=
岩层及岩性 指标 | 密度kg/m3 | 抗拉强度MPa | 抗压强度MPa | 断裂能N/m | 弹性模量E(GPa) | 内聚力MPa | 厚度m |
|---|
| 基本顶-细砂岩 | 2460 | 2.8 | 62.2 | 85 | 13.3 | 9.6 | 6.8 |
| 直接顶-砂质泥岩 | 2483 | 1.55 | 28.4 | 23 | 7.2 | 3.55 | 2.8 |
| 煤层 | 1420 | 1.73 | 10.5 | 8.5 | 6.3 | 1.25 | 4.0 |
| 伪底-砂质泥岩 | 2530 | 2.4 | 67.9 | 56 | 28.8 | 11.0 | 0.8 |
| 直接底-细砂岩 | 2873 | 3.0 | 84.1 | 88 | 11.1 | 12.6 | 8.8 |
| 采空区矸石 | 1120 | — | — | 2.5 | 1.5 | — | 4.0 |
), ArticleFig(id=1246028578459071270, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028559836360890, language=CN, label=表2, caption=
煤层及顶底板岩层物理力学参数
, figureFileSmall=null, figureFileBig=null, tableContent=
岩层及岩性 指标 | 密度kg/m3 | 抗拉强度MPa | 抗压强度MPa | 断裂能N/m | 弹性模量E(GPa) | 内聚力MPa | 厚度m |
|---|
| 基本顶-细砂岩 | 2460 | 2.8 | 62.2 | 85 | 13.3 | 9.6 | 6.8 |
| 直接顶-砂质泥岩 | 2483 | 1.55 | 28.4 | 23 | 7.2 | 3.55 | 2.8 |
| 煤层 | 1420 | 1.73 | 10.5 | 8.5 | 6.3 | 1.25 | 4.0 |
| 伪底-砂质泥岩 | 2530 | 2.4 | 67.9 | 56 | 28.8 | 11.0 | 0.8 |
| 直接底-细砂岩 | 2873 | 3.0 | 84.1 | 88 | 11.1 | 12.6 | 8.8 |
| 采空区矸石 | 1120 | — | — | 2.5 | 1.5 | — | 4.0 |
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