Article(id=1149774727381742207, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1149774724923880044, articleNumber=null, orderNo=null, doi=10.12404/j.issn.1671-1815.2403908, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1716739200000, receivedDateStr=2024-05-27, revisedDate=1738684800000, revisedDateStr=2025-02-05, acceptedDate=null, acceptedDateStr=null, onlineDate=1752057256789, onlineDateStr=2025-07-09, pubDate=1745769600000, pubDateStr=2025-04-28, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1752057256789, onlineIssueDateStr=2025-07-09, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1752057256789, creator=13701087609, updateTime=1752057256789, updator=13701087609, issue=Issue{id=1149774724923880044, tenantId=1146029695717560320, journalId=1146123166801305609, year='2025', volume='25', issue='12', pageStart='4827', pageEnd='5272', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1752057256203, creator=13701087609, updateTime=1768456746933, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1218559174552764785, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1149774724923880044, language=EN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1218559174552764786, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1149774724923880044, language=CN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=4938, endPage=4946, ext={EN=ArticleExt(id=1149774727843115652, articleId=1149774727381742207, tenantId=1146029695717560320, journalId=1146123166801305609, language=EN, title=Pressure Relief Height of Roof Cutting and Relieving along the Lateral Structure of Empty Roadway, columnId=1156264152168518571, journalTitle=Science Technology and Engineering, columnName=Papers·Mining and Metallurgical Engineering, runingTitle=null, highlight=null, articleAbstract=
In the process of coal seam mining, it is easy to cause problems such as large roof overhang area and long collapse step, which affects the failure form of the surrounding rock of the roadway and the deterioration and failure of the supporting body. In view of the occurrence of thick and hard roofs in the 113105 working face of the Bojiang Haizi Mine and the instability of the narrow coal pillars along the empty roadway, the use of roof cutting and pressure relief is an effective way to effectively solve the problem of roof overhang, and the design of its key parameters has an important impact on the pressure relief effect. In order to explore the influence of different roof cutting pressure relief heights on the roof stress evolution law above the narrow coal pillar along the empty roadway, the effect of lateral roof cutting of roadway was studied by combining theoretical analysis, numerical simulation and field observation. Based on the slip-revolve stability theory of masonry beams, the mechanical model of the roof of the coal pillar under different roof cutting heights was constructed, and the bearing stress distribution equation of the coal pillar after different roof cutting heights was obtained. FLAC3D software was used to simulate the stress distribution and displacement evolution characteristics of the coal pillar roof under different roof cutting heights. The simulation results show that the slitting surface formed after the implementation of roof cutting technology effectively blocks the stress propagation path, and the vertical stress peak value in the coal body on both sides of the roadway decreases, and the pressure relief effect gradually increases with the increase of the roof cutting height, when the roof cutting height reaches 19 m, the stress of the coal pillar roof decreases by 17.22 MPa, and the pressure relief rate is 43.4%. The displacement of the roof of the coal pillar gradually decreases with the increase of the roof cutting height, and the reduction rate gradually decreases. The field test shows that according to the designed roof cutting height, the stress of the surrounding rock is significantly reduced, and the deformation degree of the roadway meets the normal mining requirements.
, correspAuthors=Min TU, 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=Tao-xiang ZHANG, Min TU, Qing-chong ZHAO, Jia-xin DANG), CN=ArticleExt(id=1149774767634477202, articleId=1149774727381742207, tenantId=1146029695717560320, journalId=1146123166801305609, language=CN, title=沿空巷道侧向结构切顶卸压高度研究, columnId=1179786558778520038, journalTitle=科学技术与工程, columnName=论文·矿治工程, runingTitle=null, highlight=null, articleAbstract=
煤层回采过程中易造成顶板悬露面积大、垮落步距长,影响巷道围岩破坏形态及支护体劣化失效等问题。针对泊江海子矿113105工作面厚硬顶板赋存及沿空掘巷窄煤柱失稳问题,采用切顶卸压是有效解决顶板悬顶问题的一种有效途径,其关键参数的设计对于卸压效果有着重要的影响。为探究不同切顶卸压高度对沿空掘巷窄煤柱上方顶板应力演化规律的影响,采用理论分析、数值模拟与现场观测相结合的手段对巷道侧向切顶效果进行研究。基于砌体梁的滑落和回转变形稳定性理论构建不同切顶高度下煤柱顶板力学模型,得出不同切顶高度后煤柱承载应力分布方程。运用FLAC3D软件模拟不同切顶高度条件下煤柱顶板应力分布及位移演化特征。模拟结果显示:在顶板实施切顶技术后形成的切缝面有效阻断了应力的传播路径,巷道两侧煤体内的垂直应力峰值有所降低,伴随切顶高度增加其卸压的效果逐步增加,当切顶高度达到19 m时,煤柱顶板应力下降17.22 MPa,卸压率为43.4%。煤柱顶板位移量随切顶高度增加逐渐减少,减少速率逐渐降低。现场试验表明,依照所设计的切顶高度,围岩应力明显降低,巷道变形程度满足正常开采需求。
, correspAuthors=涂敏, authorNote=null, correspAuthorsNote=
* 涂敏(1964—),男,汉族,安徽六安人,博士,教授,博士研究生导师。研究方向:矿山压力与岩层控制。E-mail:
mtu@aust.edu.cn。
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, authorsList=张陶香, 涂敏, 赵庆冲, 党嘉鑫)}, authors=[Author(id=1179786915910922491, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149774727381742207, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=1260896992@qq.com, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1179786915986419965, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149774727381742207, authorId=1179786915910922491, language=EN, stringName=Tao-xiang ZHANG, firstName=Tao-xiang, middleName=null, lastName=ZHANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=null, address=Key Laboratory of Safe and Effective Coal Mining Ministry of Education, Anhui University of Science and Technology, Huainan 232001, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1179786916053528830, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149774727381742207, authorId=1179786915910922491, language=CN, stringName=张陶香, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=null, address=安徽理工大学煤矿安全高效开采省部共建教育部重点实验室, 淮南 232001, bio={"content":"
张陶香(1998—),男,汉族,安徽合肥人,硕士研究生。研究方向:矿山压力与岩层控制。E-mail:1260896992@qq.com。
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张陶香(1998—),男,汉族,安徽合肥人,硕士研究生。研究方向:矿山压力与岩层控制。E-mail:1260896992@qq.com。
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Keyword(id=1179786917005635872, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149774727381742207, language=EN, orderNo=3, keyword=cut top height), Keyword(id=1179786917076939042, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149774727381742207, language=EN, orderNo=4, keyword=thick hard top plate), Keyword(id=1179786917127270692, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149774727381742207, language=EN, orderNo=5, keyword=masonry beams), Keyword(id=1179786917194379560, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149774727381742207, language=CN, orderNo=1, keyword=切顶卸压), Keyword(id=1179786917265682730, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149774727381742207, language=CN, orderNo=2, keyword=煤柱失稳), Keyword(id=1179786917328597292, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149774727381742207, language=CN, orderNo=3, keyword=切顶高度), Keyword(id=1179786917404094767, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149774727381742207, language=CN, orderNo=4, keyword=厚硬顶板), Keyword(id=1179786917496369457, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149774727381742207, language=CN, orderNo=5, keyword=砌体梁)], refs=[Reference(id=1179786920092643702, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149774727381742207, doi=null, pmid=null, pmcid=null, year=2017, volume=46, issue=5, pageStart=970, pageEnd=978, url=null, language=null, rfNumber=[1], rfOrder=0, authorNames=侯朝炯, journalName=中国矿业大学学报, refType=null, unstructuredReference=侯朝炯. 深部巷道围岩控制的关键技术研究[J].
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37(5): 737-742., articleTitle=Determination of working resistance of fully mechanized mining support for extra-thick coal seams, refAbstract=null)], funds=[Fund(id=1179786919866151280, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149774727381742207, awardId=52074008, language=CN, fundingSource=国家自然科学基金面上项目(52074008), fundOrder=null, country=null), Fund(id=1179786919933260146, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149774727381742207, awardId=52074007, language=CN, fundingSource=国家自然科学基金面上项目(52074007), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1179786915831230710, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149774727381742207, xref=null, ext=[AuthorCompanyExt(id=1179786915843813623, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149774727381742207, companyId=1179786915831230710, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=Key Laboratory of Safe and Effective Coal Mining Ministry of Education, Anhui University of Science and Technology, Huainan 232001, China), AuthorCompanyExt(id=1179786915848007928, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149774727381742207, companyId=1179786915831230710, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=安徽理工大学煤矿安全高效开采省部共建教育部重点实验室, 淮南 232001)])], figs=[ArticleFig(id=1179786917693501751, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149774727381742207, language=EN, label=Fig.1, caption=
Schematic diagram of the working face column, figureFileSmall=2CXcQ+8hWPY+M5XRPR1tlQ==, figureFileBig=aGuED2llUz49qZQM/TZl5A==, tableContent=null), ArticleFig(id=1179786917756416313, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149774727381742207, language=CN, label=图1, caption=
工作面柱状示意图, figureFileSmall=2CXcQ+8hWPY+M5XRPR1tlQ==, figureFileBig=aGuED2llUz49qZQM/TZl5A==, tableContent=null), ArticleFig(id=1179786917815136571, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149774727381742207, language=EN, label=Fig.2, caption=
113105 face profile, figureFileSmall=JgjU1E6v/YP5PiJgbZ1Uqw==, figureFileBig=Xit6nAZ//XKw9ZY4yYljHw==, tableContent=null), ArticleFig(id=1179786917940965692, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149774727381742207, language=CN, label=图2, caption=
113105工作面概况, figureFileSmall=JgjU1E6v/YP5PiJgbZ1Uqw==, figureFileBig=Xit6nAZ//XKw9ZY4yYljHw==, tableContent=null), ArticleFig(id=1179786917999685950, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149774727381742207, language=EN, label=Fig.3, caption=
Schematic diagram of overlying rock structure after roof cutting at different heights along the empty roadway, figureFileSmall=L5nR4HHgZUv6wdONrt+f6w==, figureFileBig=oY70fKwdAcNpOoazxHAd0A==, tableContent=null), ArticleFig(id=1179786918066794816, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149774727381742207, language=CN, label=图3, caption=
沿空掘巷不同高度切顶后覆岩结构示意图, figureFileSmall=L5nR4HHgZUv6wdONrt+f6w==, figureFileBig=oY70fKwdAcNpOoazxHAd0A==, tableContent=null), ArticleFig(id=1179786918129709378, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149774727381742207, language=EN, label=Fig.4, caption=
Movement form and force of masonry beam structure, figureFileSmall=pKGkFZE95hcRlTFvATCvhQ==, figureFileBig=nYRn22NCDg9xfoMsPBKk3w==, tableContent=null), ArticleFig(id=1179786918217789764, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149774727381742207, language=CN, label=图4, caption=
砌体梁结构运动形态与受力 θ1、θ2分别为组合岩块Bi和岩块Ci的回转角度;a为岩块间接触面高度,m;l1、l2分别为组合岩块Bi和岩块Ci长度,m;W1、W2分别为组合岩块Bi和岩块Ci在采空区的下沉量,mm;h为切顶高度,m;QC铰接处竖向摩擦力,kN/m PB、PC分别为力学模型中关键岩块Bi和Ci承受的外部荷载和自身重力之和,kN/m;ZC为采空区对岩块Ci的支撑力,kN/m
, figureFileSmall=pKGkFZE95hcRlTFvATCvhQ==, figureFileBig=nYRn22NCDg9xfoMsPBKk3w==, tableContent=null), ArticleFig(id=1179786918310064454, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149774727381742207, language=EN, label=Fig.5, caption=
Numerical simulation model, figureFileSmall=iMOwlY2NehxB5h/d3S9FSg==, figureFileBig=Jw7kkrVlzmFu1KRcXXYXPQ==, tableContent=null), ArticleFig(id=1179786918377173320, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149774727381742207, language=CN, label=图5, caption=
数值模拟模型, figureFileSmall=iMOwlY2NehxB5h/d3S9FSg==, figureFileBig=Jw7kkrVlzmFu1KRcXXYXPQ==, tableContent=null), ArticleFig(id=1179786918456865098, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149774727381742207, language=EN, label=Fig.6, caption=
Vertical stress contours of the roof at different roof cutting heights, figureFileSmall=6l9t6sAAWpcVOToXG+IESw==, figureFileBig=FOFbVBKwY9eM3DePLkYRVg==, tableContent=null), ArticleFig(id=1179786918523973963, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149774727381742207, language=CN, label=图6, caption=
不同切顶高度顶板垂直应力云图, figureFileSmall=6l9t6sAAWpcVOToXG+IESw==, figureFileBig=FOFbVBKwY9eM3DePLkYRVg==, tableContent=null), ArticleFig(id=1179786918595277133, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149774727381742207, language=EN, label=Fig.7, caption=
Analysis of the plastic zone of coal pillars at different roof cutting heights, figureFileSmall=qI8ZKaEegvaOuoY/H6Rl3A==, figureFileBig=zOrsFjRV76uyP/YDnbBC2A==, tableContent=null), ArticleFig(id=1179786918666580303, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149774727381742207, language=CN, label=图7, caption=
不同切顶高度煤柱塑性区分析, figureFileSmall=qI8ZKaEegvaOuoY/H6Rl3A==, figureFileBig=zOrsFjRV76uyP/YDnbBC2A==, tableContent=null), ArticleFig(id=1179786918721106257, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149774727381742207, language=EN, label=Fig.8, caption=
Goaf filling effect under different roof cutting heights, figureFileSmall=LYAnk9LXfh4DaCcyG+McPw==, figureFileBig=k6oKZygHONBpA1oO/b5GmA==, tableContent=null), ArticleFig(id=1179786918784020819, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149774727381742207, language=CN, label=图8, caption=
不同切顶高度下采空区填充效果, figureFileSmall=LYAnk9LXfh4DaCcyG+McPw==, figureFileBig=k6oKZygHONBpA1oO/b5GmA==, tableContent=null), ArticleFig(id=1179786918846935381, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149774727381742207, language=EN, label=Fig.9, caption=
Stress evolution of coal pillar roof under different roof cutting heights, figureFileSmall=0k5uylSpwhS5f3BMblH52w==, figureFileBig=wV4jf3AxlsT9M7sxJlaCKA==, tableContent=null), ArticleFig(id=1179786918905655639, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149774727381742207, language=CN, label=图9, caption=
不同切顶高度下煤柱顶板应力演化, figureFileSmall=0k5uylSpwhS5f3BMblH52w==, figureFileBig=wV4jf3AxlsT9M7sxJlaCKA==, tableContent=null), ArticleFig(id=1179786918968570201, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149774727381742207, language=EN, label=Fig.10, caption=
The maximum subsidence of the coal pillar roof, figureFileSmall=ya97XxmB/PtCfrRBg0eb9A==, figureFileBig=Yjwtgx0lh9j+0yvBSPX1jQ==, tableContent=null), ArticleFig(id=1179786919023096155, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149774727381742207, language=CN, label=图10, caption=
煤柱顶板最大下沉量, figureFileSmall=ya97XxmB/PtCfrRBg0eb9A==, figureFileBig=Yjwtgx0lh9j+0yvBSPX1jQ==, tableContent=null), ArticleFig(id=1179786919073427805, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149774727381742207, language=EN, label=Fig.11, caption=
The maximum amount of subsidence of the roadway roof, figureFileSmall=kpm6n0ymvXa4v0jnRioSnA==, figureFileBig=jIhgKLa6R8SbUCb4ISDs8Q==, tableContent=null), ArticleFig(id=1179786919136342367, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149774727381742207, language=CN, label=图11, caption=
巷道顶板最大下沉量, figureFileSmall=kpm6n0ymvXa4v0jnRioSnA==, figureFileBig=jIhgKLa6R8SbUCb4ISDs8Q==, tableContent=null), ArticleFig(id=1179786919195062625, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149774727381742207, language=EN, label=Fig.12, caption=
Topping site arrangement, figureFileSmall=Np4coP/cLHbVUAryhArfrg==, figureFileBig=id39RETpFJeXgGb+b0wXoQ==, tableContent=null), ArticleFig(id=1179786919245394273, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149774727381742207, language=CN, label=图12, caption=
切顶现场布置, figureFileSmall=Np4coP/cLHbVUAryhArfrg==, figureFileBig=id39RETpFJeXgGb+b0wXoQ==, tableContent=null), ArticleFig(id=1179786919308308835, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149774727381742207, language=EN, label=Fig.13, caption=
Deformation of the roadway after the roof height is 14 m, figureFileSmall=Rr+5w7sFiPc7e/gPNEeEJg==, figureFileBig=Xz+kVBwplwDqW5u+Ux5Rcw==, tableContent=null), ArticleFig(id=1179786919375417701, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149774727381742207, language=CN, label=图13, caption=
切顶高度14 m后巷道变形量, figureFileSmall=Rr+5w7sFiPc7e/gPNEeEJg==, figureFileBig=Xz+kVBwplwDqW5u+Ux5Rcw==, tableContent=null), ArticleFig(id=1179786919467692392, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149774727381742207, language=EN, label=Fig.14, caption=
Deformation of the roadway after the roof height is 19 m, figureFileSmall=vpGZBNEB84y6oAKyToVigQ==, figureFileBig=aGITWO+NL3Hibsk9wE0z5w==, tableContent=null), ArticleFig(id=1179786919589327209, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149774727381742207, language=CN, label=图14, caption=
顶高度19 m后巷道变形量, figureFileSmall=vpGZBNEB84y6oAKyToVigQ==, figureFileBig=aGITWO+NL3Hibsk9wE0z5w==, tableContent=null), ArticleFig(id=1179786919652241771, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149774727381742207, language=EN, label=Table 1, caption=
Mechanical parameters of rock formations
, figureFileSmall=null, figureFileBig=null, tableContent=
| 岩性 | 密度/ (kg·m-3) | 弹性模 量/GPa | 黏聚力/ MPa | 抗拉强度/ MPa |
| 粗砂岩 | 2 675 | 18.90 | 2.60 | 2.34 |
| 砾岩 | 2 683 | 10.80 | 0.80 | 0.68 |
| 砂质泥岩 | 2 513 | 17.80 | 1.41 | 1.35 |
| 中砂岩 | 2 674 | 27.20 | 2.21 | 2.50 |
| 3-1煤 | 1 385 | 2.30 | 1.20 | 0.38 |
| 粉砂岩 | 2 589 | 7.54 | 4.70 | 1.17 |
| 细砂岩 | 2 545 | 26.20 | 3.60 | 0.90 |
), ArticleFig(id=1179786919719350637, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149774727381742207, language=CN, label=表1, caption=
岩层力学参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 岩性 | 密度/ (kg·m-3) | 弹性模 量/GPa | 黏聚力/ MPa | 抗拉强度/ MPa |
| 粗砂岩 | 2 675 | 18.90 | 2.60 | 2.34 |
| 砾岩 | 2 683 | 10.80 | 0.80 | 0.68 |
| 砂质泥岩 | 2 513 | 17.80 | 1.41 | 1.35 |
| 中砂岩 | 2 674 | 27.20 | 2.21 | 2.50 |
| 3-1煤 | 1 385 | 2.30 | 1.20 | 0.38 |
| 粉砂岩 | 2 589 | 7.54 | 4.70 | 1.17 |
| 细砂岩 | 2 545 | 26.20 | 3.60 | 0.90 |
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