Article(id=1322161773801746449, tenantId=1146029695717560320, journalId=1225396423026438145, issueId=1322161751467078485, articleNumber=null, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1729180800000, receivedDateStr=2024-10-18, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1793157531451, onlineDateStr=2026-10-28, pubDate=1758729600000, pubDateStr=2025-09-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793157531451, onlineIssueDateStr=2026-10-28, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793157531451, creator=13701087609, updateTime=1793157531451, updator=13701087609, issue=Issue{id=1322161751467078485, tenantId=1146029695717560320, journalId=1225396423026438145, year='2025', volume='45', issue='9', pageStart='1', pageEnd='314', issueExtLink='null', onlineDate='null', pubDate='1758729600000', pubDateStr='2025-09-25', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793157526127, creator='13701087609', updateTime=1793158877659, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1322167420266074322, tenantId=1146029695717560320, journalId=1225396423026438145, issueId=1322161751467078485, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1322167420266074323, tenantId=1146029695717560320, journalId=1225396423026438145, issueId=1322161751467078485, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=27, endPage=35, ext={EN=ArticleExt(id=1322161773998878739, articleId=1322161773801746449, tenantId=1146029695717560320, journalId=1225396423026438145, language=EN, title=Study on the Degradation Model of Overlying Rock Strength Under Different Mining Heights and the Reasonable Initial Mining Height, columnId=null, journalTitle=Mining Research and Development, columnName=null, runingTitle=null, highlight=null, articleAbstract=
In order to study the degradation law of mining height on the strength of overlying rock, taking the determination of reasonable initial mining height in the initial mining stage of Guojiawan 51208 working face as the background, the fracture density function was used to measure the degradation of mining height on the strength of overlying rock, and the theoretical model and numerical analysis model of the strength degradation of overlying rock under different mining heights were established. Combined with the parameters of the working face, the influence law of mining height on the stability of overlying rock was obtained. The results show that with the increase of mining height, the rotation angle gradually increases, the thickness of the rock layer loaded by the bearing layer gradually decreases, and the rock layer is more prone to rotary deformation and instability. When the advancing length of the working face is 40 m, the maximum displacement of the overlying rock and the plastic zone distribution of the basic roof are basically the same for the mining height of 2.5 m and 4.0 m. When the advancing length of the working face is 50 m and above, the maximum displacement of the overlying rock with a mining height of 4.0 m is more than10%higher than that with a mining height of 2.5 m, and the plastic zone of the basic roof is obviously increased. The peak value of advance support pressure increases with the increase of mining height, and the first weighting step decreases with the increase of mining height. The initial weighting step of 2.5 m mining height is 70 m. The initial mining height is 2.5 m, and the mining height is gradually adjusted to the actual coal thickness(4.0 m)after the first weighting of the main roof. The initial mining of the working face is more efficient and safe. The research results can provide reference for the initial mining roof control problem of the working face.
, authors=Weichong CHEN
1, Jingzhu HUANG
2, Jian XIAO
3, Rui WU
3, Juntao SUN
4, authorsList=Weichong CHEN, Jingzhu HUANG, Jian XIAO, Rui WU, Juntao SUN, authorCompany=null, correspAuthors=Jingzhu HUANG, 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=1322161781229858891, articleId=1322161773801746449, tenantId=1146029695717560320, journalId=1225396423026438145, language=CN, title=不同采高下覆岩强度劣化模型及合理初采高度研究, columnId=1226462294490657775, journalTitle=矿业研究与开发, columnName=采矿与矿山充填, runingTitle=null, highlight=null, articleAbstract=
为研究采高对覆岩强度的劣化规律,以郭家湾51208工作面初采阶段合理初采高度的确定为背景,采用裂隙密度函数衡量采高对覆岩强度的劣化,建立不同采高下覆岩强度劣化的理论模型和数值分析模型,结合回采工作面的参数,得出采高对覆岩稳定性的影响规律。结果表明,随着采高的增加,回转角逐渐增大,承载层所负载的岩层厚度逐渐减小,岩层更易发生回转变形失稳。工作面推进长度为40 m时,采高2.5 m和采高4.0 m的覆岩位移最大值、基本顶的塑性区分布基本一样;工作面推进长度在50 m及以上时,采高4.0 m的覆岩位移最大值较采高2.5 m增加了10%以上,基本顶的塑性区明显增加。超前支承压力峰值随着采高的增加而增加,初次来压步距随着采高的增加而减小,采高2.5 m的初次来压步距为70 m。采用初采高度为2.5 m、在老顶初次来压后逐渐将采高调整为实际煤厚(4.0 m)的方案,工作面初采更为高效和安全。研究结果可为工作面初采顶板控制问题提供参考。
, authors=陈伟崇
1, 黄晶柱
2, 肖剑
3, 吴锐
3, 孙俊涛
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1.CHN Energy Yulin Energy Co., Ltd., Yulin, Shaanxi 719000, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1322162473063535368, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322161773801746449, authorId=1322162472644104963, language=CN, stringName=陈伟崇, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1.国能榆林能源有限责任公司,陕西 榆林市 719000, bio={"content":"
陈伟崇(1980—),男,河北衡水人,工程师,主要从事矿山稳定性、自动化、智能化等方面的研究工作。E-mail:11625155@shenhua.cc
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陈伟崇(1980—),男,河北衡水人,工程师,主要从事矿山稳定性、自动化、智能化等方面的研究工作。E-mail:11625155@shenhua.cc
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2.江西理工大学江西省环境岩土与工程灾害控制重点实验室,江西 赣州市 341000, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1322162471314510585, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322161773801746449, xref=2., ext=[AuthorCompanyExt(id=1322162471348065018, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322161773801746449, companyId=1322162471314510585, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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3.School of Resources and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou, Jiangxi 341000, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1322162476800660246, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322161773801746449, authorId=1322162475995353873, language=CN, stringName=肖剑, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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3.School of Resources and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou, Jiangxi 341000, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1322162478050562846, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322161773801746449, authorId=1322162477169759001, language=CN, stringName=吴锐, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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4.云南省水利水电勘测设计研究院,云南 昆明 650205, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1322162472224674559, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322161773801746449, xref=4., ext=[AuthorCompanyExt(id=1322162472233063168, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322161773801746449, companyId=1322162472224674559, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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Main foor fractured masonry beam structure model, figureFileSmall=Os0rG+ha3Ozq0YXPQ0UFhQ==, figureFileBig=9VMGEeTL0TN2kFCYvmS0mw==, tableContent=null), ArticleFig(id=1322162490218238771, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322161773801746449, language=CN, label=图1, caption=
基本顶断裂砌体梁结构模型, figureFileSmall=Os0rG+ha3Ozq0YXPQ0UFhQ==, figureFileBig=9VMGEeTL0TN2kFCYvmS0mw==, tableContent=null), ArticleFig(id=1322162490679612212, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322161773801746449, language=EN, label=Fig.2, caption=
Three dimensional discrete element numerical calculation model, figureFileSmall=EcORlT4NZB6tigXcje99RA==, figureFileBig=AP+a9g1xkgsGN1THDRzR5w==, tableContent=null), ArticleFig(id=1322162491057099573, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322161773801746449, language=CN, label=图2, caption=
三维离散元数值计算模型, figureFileSmall=EcORlT4NZB6tigXcje99RA==, figureFileBig=AP+a9g1xkgsGN1THDRzR5w==, tableContent=null), ArticleFig(id=1322162491489112886, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322161773801746449, language=EN, label=Fig.3, caption=
Distribution cloud diagrams of overlying rock when the working face advances 40 m under different mining heights, figureFileSmall=fK/FFT7+uwkM4RMQqTKRxA==, figureFileBig=DUM6CkAYqL33Hzr8Gs7ftQ==, tableContent=null), ArticleFig(id=1322162491870794551, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322161773801746449, language=CN, label=图3, caption=
不同采高下工作面推进40 m时覆岩位移云图, figureFileSmall=fK/FFT7+uwkM4RMQqTKRxA==, figureFileBig=DUM6CkAYqL33Hzr8Gs7ftQ==, tableContent=null), ArticleFig(id=1322162492688683832, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322161773801746449, language=EN, label=Fig.4, caption=
Displacement cloud diagrams of overlying rock when the working face advances 50 m under different mining heights, figureFileSmall=StlkM1s6mRLWUfVpiwEu2w==, figureFileBig=yTj6WECTq1mrVp4Qc4I4DQ==, tableContent=null), ArticleFig(id=1322162493959557946, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322161773801746449, language=CN, label=图4, caption=
不同采高下工作面推进50 m时覆岩位移云图, figureFileSmall=StlkM1s6mRLWUfVpiwEu2w==, figureFileBig=yTj6WECTq1mrVp4Qc4I4DQ==, tableContent=null), ArticleFig(id=1322162494374794043, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322161773801746449, language=EN, label=Fig.5, caption=
Displacement cloud diagrams of overlying rock when the working face advances 60 m under different mining heights, figureFileSmall=WMmxvixDEFgaguk0YMCMXw==, figureFileBig=j0SU/jhB4Ks69hVKgAs0BQ==, tableContent=null), ArticleFig(id=1322162494496428860, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322161773801746449, language=CN, label=图5, caption=
不同采高下工作面推进 60 m 时覆岩位移云图, figureFileSmall=WMmxvixDEFgaguk0YMCMXw==, figureFileBig=j0SU/jhB4Ks69hVKgAs0BQ==, tableContent=null), ArticleFig(id=1322162494840361790, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322161773801746449, language=EN, label=Fig.6, caption=
Displacement cloud diagrams of overlying rock when the working face advances 70 m under different mining heights, figureFileSmall=s9TixWdjijJ+MEfomtThSg==, figureFileBig=0XbOHIxzENbeca2RDMz7zg==, tableContent=null), ArticleFig(id=1322162494932636480, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322161773801746449, language=CN, label=图6, caption=
不同采高下工作面推进70 m时覆岩位移云图, figureFileSmall=s9TixWdjijJ+MEfomtThSg==, figureFileBig=0XbOHIxzENbeca2RDMz7zg==, tableContent=null), ArticleFig(id=1322162495310123841, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322161773801746449, language=EN, label=Fig.7, caption=
Distribution cloud diagrams of plastic zone of overlying rock when the working face advances 40 m under different mining heights, figureFileSmall=RbWpJg6vStxxjzyGnPYN0A==, figureFileBig=0Ts/a77JcHtiu2YXQff3uQ==, tableContent=null), ArticleFig(id=1322162495691805507, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322161773801746449, language=CN, label=图7, caption=
不同采高下工作面推进40 m时覆岩塑性区分布云图, figureFileSmall=RbWpJg6vStxxjzyGnPYN0A==, figureFileBig=0Ts/a77JcHtiu2YXQff3uQ==, tableContent=null), ArticleFig(id=1322162496069292868, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322161773801746449, language=EN, label=Fig.8, caption=
Distribution cloud diagrams of plastic zone of overlying rock when the working face advances 50 m under different mining heights, figureFileSmall=66pvfU9lBnNvkuyIuUtVOw==, figureFileBig=R5v/f0PWI/iWUmbnluYksw==, tableContent=null), ArticleFig(id=1322162496174150469, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322161773801746449, language=CN, label=图8, caption=
不同采高下工作面推进50 m时覆岩塑性区分布云图, figureFileSmall=66pvfU9lBnNvkuyIuUtVOw==, figureFileBig=R5v/f0PWI/iWUmbnluYksw==, tableContent=null), ArticleFig(id=1322162498074170182, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322161773801746449, language=EN, label=Fig.9, caption=
Distribution cloud diagrams of plastic zone of overlying rock when the working face advances 60 m under different mining heights, figureFileSmall=ifnDrU856t4MY+SGMOuRPQ==, figureFileBig=fcloSwYDWHHfU8676V3Hxw==, tableContent=null), ArticleFig(id=1322162498162250567, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322161773801746449, language=CN, label=图9, caption=
不同采高下工作面推进60 m时覆岩塑性区分布云图, figureFileSmall=ifnDrU856t4MY+SGMOuRPQ==, figureFileBig=fcloSwYDWHHfU8676V3Hxw==, tableContent=null), ArticleFig(id=1322162498241942344, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322161773801746449, language=EN, label=Fig.10, caption=
Distribution cloud diagrams of plastic zone of overlying rock when the working face advances 70 m under different mining heights, figureFileSmall=Ul0D1fFILmoBsUQ34i5rYQ==, figureFileBig=9lw2V55yaPJUPrheGT+KOA==, tableContent=null), ArticleFig(id=1322162498325828425, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322161773801746449, language=CN, label=图10, caption=
不同采高下工作面推进70 m时覆岩塑性区分布云图, figureFileSmall=Ul0D1fFILmoBsUQ34i5rYQ==, figureFileBig=9lw2V55yaPJUPrheGT+KOA==, tableContent=null), ArticleFig(id=1322162498573292362, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322161773801746449, language=EN, label=Fig.11, caption=
Vertical stress monitoring line layout of the model, figureFileSmall=W0nOaLlPBZPdUqS8MAfnHw==, figureFileBig=5Bf5XitVnVgMjVfrOY6sGg==, tableContent=null), ArticleFig(id=1322162498640401227, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322161773801746449, language=CN, label=图11, caption=
模型竖向应力监测线布置, figureFileSmall=W0nOaLlPBZPdUqS8MAfnHw==, figureFileBig=5Bf5XitVnVgMjVfrOY6sGg==, tableContent=null), ArticleFig(id=1322162498992722764, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322161773801746449, language=EN, label=Fig.12, caption=
Distribution curves of advance support pressure of coal body when the working face advances 40 m under different mining heights, figureFileSmall=SfmItpLXPTymNDTbDaoVGQ==, figureFileBig=nomZkJYLcyEzvpzXT1Jxqw==, tableContent=null), ArticleFig(id=1322162499084997453, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322161773801746449, language=CN, label=图12, caption=
不同采高下工作面推进40 m时煤体超前支承压力分布曲线, figureFileSmall=SfmItpLXPTymNDTbDaoVGQ==, figureFileBig=nomZkJYLcyEzvpzXT1Jxqw==, tableContent=null), ArticleFig(id=1322162499466679118, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322161773801746449, language=EN, label=Fig.13, caption=
Relationship curves between the peak value of advanced support pressure and working face advance length under different mining heights, figureFileSmall=m0FVzPn67eZzMZZVgF8MmA==, figureFileBig=PlhFGNSyKtXGSvSukV9EQg==, tableContent=null), ArticleFig(id=1322162499865137999, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322161773801746449, language=CN, label=图13, caption=
不同采高下超前支承压力峰值与工作面推进长度的关系曲线, figureFileSmall=m0FVzPn67eZzMZZVgF8MmA==, figureFileBig=PlhFGNSyKtXGSvSukV9EQg==, tableContent=null), ArticleFig(id=1322162500242625360, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322161773801746449, language=EN, label=Table 1, caption=
Initial rock mechanics parameters of numerical model
, figureFileSmall=null, figureFileBig=null, tableContent=
| 岩性 | 体积模量 K0/GPa | 剪切模量 G0/GPa | 黏聚力 C0/MPa | 内摩擦角 φ0/(°) | 抗拉强度 σt0/MPa | 密度 ρ/(kg/m3) |
|---|
| 砂质泥岩 | 4.90 | 3.20 | 1.18 | 35 | 1.80 | 2 520 |
| 粉砂岩 | 10.83 | 8.13 | 2.75 | 38 | 1.84 | 2 460 |
| 细粒砂岩 | 18.02 | 14.02 | 3.80 | 43 | 5.13 | 2 586 |
| 粗粒砂岩 | 7.35 | 6.63 | 3.04 | 40 | 4.96 | 2 700 |
| 5-1煤 | 1.73 | 0.82 | 0.75 | 20 | 1.50 | 1 410 |
), ArticleFig(id=1322162500364260177, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322161773801746449, language=CN, label=表1, caption=
数值模型的初始岩体力学参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 岩性 | 体积模量 K0/GPa | 剪切模量 G0/GPa | 黏聚力 C0/MPa | 内摩擦角 φ0/(°) | 抗拉强度 σt0/MPa | 密度 ρ/(kg/m3) |
|---|
| 砂质泥岩 | 4.90 | 3.20 | 1.18 | 35 | 1.80 | 2 520 |
| 粉砂岩 | 10.83 | 8.13 | 2.75 | 38 | 1.84 | 2 460 |
| 细粒砂岩 | 18.02 | 14.02 | 3.80 | 43 | 5.13 | 2 586 |
| 粗粒砂岩 | 7.35 | 6.63 | 3.04 | 40 | 4.96 | 2 700 |
| 5-1煤 | 1.73 | 0.82 | 0.75 | 20 | 1.50 | 1 410 |
), ArticleFig(id=1322162501156983634, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322161773801746449, language=EN, label=Table 2, caption=
Structural plane mechanical parameters of numerical model
, figureFileSmall=null, figureFileBig=null, tableContent=
| 岩层 | 法向刚度K/(GPa/m) | 切向刚度G/(GPa/m) | 黏聚力C/MPa | 内摩擦角φ/(°) | 抗拉强度σt/MPa |
|---|
| 砂质泥岩 | 2.8 | 2.2 | 0.96 | 22.0 | 1.18 |
| 粉砂岩 | 8.0 | 8.0 | 1.60 | 6.0 | 1.31 |
| 细粒砂岩 | 8.0 | 7.0 | 1.70 | 20.8 | 3.70 |
| 粗粒砂岩 | 6.0 | 4.0 | 1.30 | 11.0 | 2.35 |
| 5-1煤 | 3.0 | 1.0 | 0.14 | 10.0 | 1.02 |
), ArticleFig(id=1322162502771790676, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322161773801746449, language=CN, label=表2, caption=
数值模型的结构面力学参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 岩层 | 法向刚度K/(GPa/m) | 切向刚度G/(GPa/m) | 黏聚力C/MPa | 内摩擦角φ/(°) | 抗拉强度σt/MPa |
|---|
| 砂质泥岩 | 2.8 | 2.2 | 0.96 | 22.0 | 1.18 |
| 粉砂岩 | 8.0 | 8.0 | 1.60 | 6.0 | 1.31 |
| 细粒砂岩 | 8.0 | 7.0 | 1.70 | 20.8 | 3.70 |
| 粗粒砂岩 | 6.0 | 4.0 | 1.30 | 11.0 | 2.35 |
| 5-1煤 | 3.0 | 1.0 | 0.14 | 10.0 | 1.02 |
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