Article(id=1322907427133326334, tenantId=1146029695717560320, journalId=1225396423026438145, issueId=1322907425740825534, 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=1719849600000, receivedDateStr=2024-07-02, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1793335309059, onlineDateStr=2026-10-30, pubDate=1750780800000, pubDateStr=2025-06-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793335309059, onlineIssueDateStr=2026-10-30, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793335309059, creator=13701087609, updateTime=1793335309059, updator=13701087609, issue=Issue{id=1322907425740825534, tenantId=1146029695717560320, journalId=1225396423026438145, year='2025', volume='45', issue='6', pageStart='1', pageEnd='300', issueExtLink='null', onlineDate='null', pubDate='1750780800000', pubDateStr='2025-06-25', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793335308726, creator='13701087609', updateTime=1793335308726, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext=null, issueFiles=null, downloadFileDto=null}, startPage=1, endPage=11, ext={EN=ArticleExt(id=1322907427489842175, articleId=1322907427133326334, tenantId=1146029695717560320, journalId=1225396423026438145, language=EN, title=Research on Rock Mass Quality Evaluation and Roadway Support Technology in Deep Large Scale Mines, columnId=null, journalTitle=Mining Research and Development, columnName=null, runingTitle=null, highlight=null, articleAbstract=
In order to solve the problems of significant reduction of rock mass mechanical strength, poor integrity and extremely complex mining technical conditions in the 28-48 line ore body area of the deep −625 m middle section of Lilou Iron Mine due to the influence of weathering zone and fault cutting. The rock mass quality evaluation of four kinds of ore rocks in the upper and lower plates of the ore body area was carried out. It is found that the surrounding rock of the roof is poor, and the outer roadway of the vein should be arranged as much as possible in the stable marble of the lower plate. Based on the rock mass quality evaluation and the roadway failure mechanism analysis, four schemes of no support, bolt+steel arch support, bolt-shotcreting support and bolt-shotcreting+steel arch combined support were selected. FLAC3D software was used to simulate and analyze the stability of surrounding rock of deep −625 m middle roadway under four support schemes. The results show that compared with the no support, the minimum principal stress under the scheme of bolt+steel arch support, bolt-shotcreting support and bolt-shotcreting+steel arch combined support is reduced by 4.05%, 14.02% and 11.59% respectively, and the maximum subsidence of vertical displacement of roof is reduced by 10.33%, 42.46% and 43.35% respectively. The support effect of roadway surrounding rock from weak to strong is no support<bolt+steel arch support<bolt-shotcreting support≈bolt-shotcreting+steel arch combined support, and the support effect of bolt-shotcreting+steel arch combined support scheme is the best. After comprehensive consideration, it is considered that the selection of bolt-shotcreting support scheme can meet the support requirements of most mine weathering zone areas. Only in the extremely broken area, the bolt-shotcreting+steel arch combined support scheme is recommended. The research results can provide a basis for the subsequent operation and production of deep middle roadway and stope mining.
, authors=Zhenjian YU
1, Yongchao GONG
2, 3, Dunxia LIAO
2, 3, Weixing LIN
2, 3, Chao CHEN
4, Yuding WANG
2, 3, Min XU
1, Ke JIANG
2, 3, authorsList=Zhenjian YU, Yongchao GONG, Dunxia LIAO, Weixing LIN, Chao CHEN, Yuding WANG, Min XU, Ke JIANG, authorCompany=null, correspAuthors=Dunxia LIAO, 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=1322907432296513557, articleId=1322907427133326334, tenantId=1146029695717560320, journalId=1225396423026438145, language=CN, title=深部大规模矿山岩体质量评价与巷道支护技术研究, columnId=1226462294582936453, journalTitle=矿业研究与开发, columnName=深部、深海矿产资源勘探与开发, runingTitle=null, highlight=null, articleAbstract=
为解决李楼铁矿深部−625 m中段28~48线矿体区域受到风化带及断层切割的影响,岩体力学强度显著降低、完整性差和开采技术条件极为复杂等问题。对该矿体区域上下盘4种矿岩进行了岩体质量评价,发现顶板围岩性质较差,脉外巷道应尽量布置在下盘稳固的大理岩中;基于岩体质量评价和巷道破坏机理分析,选取无支护、锚杆+钢拱架支护、锚喷支护、锚喷+钢拱架联合支护4种方案,运用FLAC3D软件对4种支护方案下的深部−625 m中段巷道围岩稳定性进行了数值模拟分析。结果表明:相较于无支护条件,锚杆+钢拱架支护、锚喷支护、锚喷+钢拱架联合支护方案下的最小主应力分别降低了4.05%、14.02%、11.59%,顶板的竖向位移最大下沉量分别降低了10.33%、42.46%、43.35%,巷道围岩的支护效果由弱到强依次为无支护<锚杆+钢拱架支护<锚喷支护≈锚喷+钢拱架联合支护,其中锚喷+钢拱架联合支护方案的支护效果最佳。综合考虑认为,选用锚喷支护方案已能满足矿山大部分风化带区域的支护要求,只有在极破碎区域建议选用锚喷+钢拱架联合支护方案。研究成果可为后续深部中段巷道的作业生产及采场回采提供依据。
, authors=于振建
1, 龚永超
2, 3, 廖敦霞
2, 3, 林卫星
2, 3, 陈超
4, 王玉丁
2, 3, 徐敏
1, 江科
2, 3, authorsList=于振建, 龚永超, 廖敦霞, 林卫星, 陈超, 王玉丁, 徐敏, 江科, authorCompany=null, correspAuthors=廖敦霞, authorNote=
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1, address=
1.Anhui Development Mining Co., Ltd., Lu'an, Anhui 237474, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1322907434607575077, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, authorId=1322907434435608610, language=CN, stringName=于振建, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, address=
1.安徽开发矿业有限公司,安徽 六安市 237474, bio={"content":"
于振建(1985—),男,山东烟台人,高级工程师,主要从事矿山生产及研究工作。E-mail:573715008@qq.com
"}, bioImg=null, bioContent=
于振建(1985—),男,山东烟台人,高级工程师,主要从事矿山生产及研究工作。E-mail:573715008@qq.com
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1.安徽开发矿业有限公司,安徽 六安市 237474)])]), Author(id=1322907434674683943, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, 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=1322907434775347242, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, authorId=1322907434674683943, language=EN, stringName=Yongchao GONG, firstName=Yongchao, middleName=null, lastName=GONG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
2, 3, address=
2.Changsha Institute of Mining Research Co., Ltd., Changsha, Hunan 410012, China
3.National Engineering Research Center for Metal Mining, Changsha, Hunan 410012, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1322907434838261803, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, authorId=1322907434674683943, language=CN, stringName=龚永超, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
2, 3, address=
2.长沙矿山研究院有限责任公司,湖南 长沙 410012
3.国家金属采矿工程技术研究中心,湖南 长沙 410012, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1322907434142007320, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, xref=2., ext=[AuthorCompanyExt(id=1322907434150395929, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, companyId=1322907434142007320, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.Changsha Institute of Mining Research Co., Ltd., Changsha, Hunan 410012, China), AuthorCompanyExt(id=1322907434158784538, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, companyId=1322907434142007320, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.长沙矿山研究院有限责任公司,湖南 长沙 410012)]), AuthorCompany(id=1322907434238476315, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, xref=3., ext=[AuthorCompanyExt(id=1322907434251059228, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, companyId=1322907434238476315, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3.National Engineering Research Center for Metal Mining, Changsha, Hunan 410012, China), AuthorCompanyExt(id=1322907434259447837, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, companyId=1322907434238476315, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3.国家金属采矿工程技术研究中心,湖南 长沙 410012)])]), Author(id=1322907434917953582, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, orderNo=2, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=1300760755@qq.com, emailSecond=null, emailThird=null, correspondingAuthor=1, authorType=1, ext={EN=AuthorExt(id=1322907435006033969, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, authorId=1322907434917953582, language=EN, stringName=Dunxia LIAO, firstName=Dunxia, middleName=null, lastName=LIAO, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
2, 3, address=
2.Changsha Institute of Mining Research Co., Ltd., Changsha, Hunan 410012, China
3.National Engineering Research Center for Metal Mining, Changsha, Hunan 410012, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1322907435089920050, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, authorId=1322907434917953582, language=CN, stringName=廖敦霞, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
2, 3, address=
2.长沙矿山研究院有限责任公司,湖南 长沙 410012
3.国家金属采矿工程技术研究中心,湖南 长沙 410012, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1322907434142007320, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, xref=2., ext=[AuthorCompanyExt(id=1322907434150395929, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, companyId=1322907434142007320, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.Changsha Institute of Mining Research Co., Ltd., Changsha, Hunan 410012, China), AuthorCompanyExt(id=1322907434158784538, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, companyId=1322907434142007320, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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3.国家金属采矿工程技术研究中心,湖南 长沙 410012)])]), Author(id=1322907435178000436, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, 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=1322907435282858039, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, authorId=1322907435178000436, language=EN, stringName=Weixing LIN, firstName=Weixing, middleName=null, lastName=LIN, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
2, 3, address=
2.Changsha Institute of Mining Research Co., Ltd., Changsha, Hunan 410012, China
3.National Engineering Research Center for Metal Mining, Changsha, Hunan 410012, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1322907435442241592, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, authorId=1322907435178000436, language=CN, stringName=林卫星, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
2, 3, address=
2.长沙矿山研究院有限责任公司,湖南 长沙 410012
3.国家金属采矿工程技术研究中心,湖南 长沙 410012, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1322907434142007320, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, xref=2., ext=[AuthorCompanyExt(id=1322907434150395929, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, companyId=1322907434142007320, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.Changsha Institute of Mining Research Co., Ltd., Changsha, Hunan 410012, China), AuthorCompanyExt(id=1322907434158784538, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, companyId=1322907434142007320, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.长沙矿山研究院有限责任公司,湖南 长沙 410012)]), AuthorCompany(id=1322907434238476315, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, xref=3., ext=[AuthorCompanyExt(id=1322907434251059228, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, companyId=1322907434238476315, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3.National Engineering Research Center for Metal Mining, Changsha, Hunan 410012, China), AuthorCompanyExt(id=1322907434259447837, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, companyId=1322907434238476315, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3.国家金属采矿工程技术研究中心,湖南 长沙 410012)])]), Author(id=1322907435526127674, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, 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=1322907435643568188, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, authorId=1322907435526127674, language=EN, stringName=Chao CHEN, firstName=Chao, middleName=null, lastName=CHEN, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
4, address=
4.Minmetals Mining Holdings Limited, Hefei, Anhui 230091, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1322907435865866301, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, authorId=1322907435526127674, language=CN, stringName=陈超, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
4, address=
4.五矿矿业控股有限公司,安徽 合肥 230091, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1322907434339139614, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, xref=4., ext=[AuthorCompanyExt(id=1322907434347528223, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, companyId=1322907434339139614, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
4.Minmetals Mining Holdings Limited, Hefei, Anhui 230091, China), AuthorCompanyExt(id=1322907434360111136, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, companyId=1322907434339139614, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
4.五矿矿业控股有限公司,安徽 合肥 230091)])]), Author(id=1322907435949752383, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, 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=1322907436042027074, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, authorId=1322907435949752383, language=EN, stringName=Yuding WANG, firstName=Yuding, middleName=null, lastName=WANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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3.国家金属采矿工程技术研究中心,湖南 长沙 410012)]), AuthorCompany(id=1322907434339139614, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, xref=4., ext=[AuthorCompanyExt(id=1322907434347528223, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, companyId=1322907434339139614, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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Results of statistical analysis of structural planes in marble, figureFileSmall=VNVlej9gHgfIFTNbK+i2YA==, figureFileBig=N02LIAFfJA4tW+9eHtcRMA==, tableContent=null), ArticleFig(id=1322907439124840543, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, language=CN, label=图1, caption=
大理岩结构面统计分析结果, figureFileSmall=VNVlej9gHgfIFTNbK+i2YA==, figureFileBig=N02LIAFfJA4tW+9eHtcRMA==, tableContent=null), ArticleFig(id=1322907439384887392, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, language=EN, label=Fig.2, caption=
Result of statistical analysis of structural planes in vitrinite, figureFileSmall=aTLPY77BbWAsEywnrSK6fQ==, figureFileBig=CMfP8J/Il1nBXmZijvoJ1w==, tableContent=null), ArticleFig(id=1322907439691071585, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, language=CN, label=图2, caption=
镜铁矿结构面统计分析结果, figureFileSmall=aTLPY77BbWAsEywnrSK6fQ==, figureFileBig=CMfP8J/Il1nBXmZijvoJ1w==, tableContent=null), ArticleFig(id=1322907439758180450, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, language=EN, label=Fig.3, caption=
Cross-sectional size of roadway, figureFileSmall=HmgLXg4FqFD1E+vVc3yf/g==, figureFileBig=CplOJEX0UE+jw4EwOuXinw==, tableContent=null), ArticleFig(id=1322907440055976035, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, language=CN, label=图3, caption=
巷道断面尺寸, figureFileSmall=HmgLXg4FqFD1E+vVc3yf/g==, figureFileBig=CplOJEX0UE+jw4EwOuXinw==, tableContent=null), ArticleFig(id=1322907440131473508, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, language=EN, label=Fig.4, caption=
Numerical modles of support schemes, figureFileSmall=1Uf6/aAtaoFJkHXnSYqWiw==, figureFileBig=Hk2qA1d0UwVyD70vQWnljA==, tableContent=null), ArticleFig(id=1322907440513155173, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, language=CN, label=图4, caption=
支护方案的数值模型, figureFileSmall=1Uf6/aAtaoFJkHXnSYqWiw==, figureFileBig=Hk2qA1d0UwVyD70vQWnljA==, tableContent=null), ArticleFig(id=1322907440911614054, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, language=EN, label=Fig.5, caption=
Distribution of maximum principal stress in roadway surrounding rock, figureFileSmall=O/eNmjZsVzdXwFvQviz2GA==, figureFileBig=6enGrJoi01A/JZ0SKlHOhw==, tableContent=null), ArticleFig(id=1322907440982917223, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, language=CN, label=图5, caption=
巷道围岩的最大主应力分布情况, figureFileSmall=O/eNmjZsVzdXwFvQviz2GA==, figureFileBig=6enGrJoi01A/JZ0SKlHOhw==, tableContent=null), ArticleFig(id=1322907441050026088, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, language=EN, label=Fig.6, caption=
Distribution of minimum principal stress in roadway surrounding rock, figureFileSmall=QUUfT58LtSVFa4kv3/EcEw==, figureFileBig=9r+NVLHJ6FpNruFt3FOvDw==, tableContent=null), ArticleFig(id=1322907441112940649, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, language=CN, label=图6, caption=
巷道围岩的最小主应力分布情况, figureFileSmall=QUUfT58LtSVFa4kv3/EcEw==, figureFileBig=9r+NVLHJ6FpNruFt3FOvDw==, tableContent=null), ArticleFig(id=1322907441184243818, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, language=EN, label=Fig.7, caption=
Distribution of vertical displacement in roadway surrounding rock, figureFileSmall=pNj7c3egqAm+/9jiJaUZSw==, figureFileBig=Nrm7kapZW4HezlwidgCj6Q==, tableContent=null), ArticleFig(id=1322907441314267243, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, language=CN, label=图7, caption=
巷道围岩的竖向位移分布情况, figureFileSmall=pNj7c3egqAm+/9jiJaUZSw==, figureFileBig=Nrm7kapZW4HezlwidgCj6Q==, tableContent=null), ArticleFig(id=1322907443012960364, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, language=EN, label=Fig.8, caption=
Distribution of horizontal displacement in roadway surrounding rock, figureFileSmall=RIs4ktljEnNpsrHLcF3rRg==, figureFileBig=LoEIYrX6DVOX6EhvuCYqRQ==, tableContent=null), ArticleFig(id=1322907443096846446, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, language=CN, label=图8, caption=
巷道围岩的水平位移分布情况, figureFileSmall=RIs4ktljEnNpsrHLcF3rRg==, figureFileBig=LoEIYrX6DVOX6EhvuCYqRQ==, tableContent=null), ArticleFig(id=1322907443163955311, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, language=EN, label=Fig.9, caption=
Failure of plastic zone in roadway surrounding rock, figureFileSmall=kI+KA4PSafeoN/cQcPUyxw==, figureFileBig=NhJJXt5iAUo4GGjAoyIptA==, tableContent=null), ArticleFig(id=1322907443252035696, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, language=CN, label=图9, caption=
巷道围岩塑性区破坏情况, figureFileSmall=kI+KA4PSafeoN/cQcPUyxw==, figureFileBig=NhJJXt5iAUo4GGjAoyIptA==, tableContent=null), ArticleFig(id=1322907443314950257, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, language=EN, label=Table 1, caption=
Summary of survey results in rock mass structural surface mapping area
, figureFileSmall=null, figureFileBig=null, tableContent=
| 岩石类型 | 线号 | 区域位置 | 方位角/(°) | 结构面长度/m | 条数 |
|---|
| 大理岩 | 1# | 18-1溜井联巷 | 325 | 5.15 | 41 |
| 2# | 16号穿南盘回风巷 | 286 | 10.20 | 97 |
| 镜铁矿 | 3# | 14-3采场 | 97 | 12.60 | 109 |
| 4# | 16-3采场 | 0 | 4.60 | 32 |
), ArticleFig(id=1322907443407224946, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, language=CN, label=表1, caption=
岩体结构面测绘区域调查结果汇总
, figureFileSmall=null, figureFileBig=null, tableContent=
| 岩石类型 | 线号 | 区域位置 | 方位角/(°) | 结构面长度/m | 条数 |
|---|
| 大理岩 | 1# | 18-1溜井联巷 | 325 | 5.15 | 41 |
| 2# | 16号穿南盘回风巷 | 286 | 10.20 | 97 |
| 镜铁矿 | 3# | 14-3采场 | 97 | 12.60 | 109 |
| 4# | 16-3采场 | 0 | 4.60 | 32 |
), ArticleFig(id=1322907443507888243, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, language=EN, label=Table 2, caption=
Average spacing of structural planes
, figureFileSmall=null, figureFileBig=null, tableContent=
| 岩性 | 线密度/(条/m) | 平均间距/m |
|---|
| 大理岩 | 3.34 | 0.30 |
| 镜铁矿 | 4.74 | 0.21 |
| 片麻岩 | 3.77 | 0.27 |
| 紫红色泥灰岩 | 2.98 | 0.34 |
), ArticleFig(id=1322907443587580020, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, language=CN, label=表2, caption=
结构面平均间距
, figureFileSmall=null, figureFileBig=null, tableContent=
| 岩性 | 线密度/(条/m) | 平均间距/m |
|---|
| 大理岩 | 3.34 | 0.30 |
| 镜铁矿 | 4.74 | 0.21 |
| 片麻岩 | 3.77 | 0.27 |
| 紫红色泥灰岩 | 2.98 | 0.34 |
), ArticleFig(id=1322907443658883189, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, language=EN, label=Table 3, caption=
Summary of rock mass classification
, figureFileSmall=null, figureFileBig=null, tableContent=
| 岩性 | 岩土规范法 | RMR分级 | Q系统分级法 | 综合分级 |
|---|
| 矿体下盘大理岩 | Ⅲ | Ⅲ | 一般(Ⅲ) | Ⅲ |
| 镜铁矿 | Ⅳ | Ⅲ | 差(Ⅲ) | Ⅲ |
| 矿体上盘片麻岩 | Ⅳ | Ⅲ | 差(Ⅲ) | Ⅲ |
| 顶板紫红色泥灰岩 | Ⅳ | Ⅳ | 差(Ⅲ) | Ⅳ |
), ArticleFig(id=1322907443738574966, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, language=CN, label=表3, caption=
岩体分级汇总
, figureFileSmall=null, figureFileBig=null, tableContent=
| 岩性 | 岩土规范法 | RMR分级 | Q系统分级法 | 综合分级 |
|---|
| 矿体下盘大理岩 | Ⅲ | Ⅲ | 一般(Ⅲ) | Ⅲ |
| 镜铁矿 | Ⅳ | Ⅲ | 差(Ⅲ) | Ⅲ |
| 矿体上盘片麻岩 | Ⅳ | Ⅲ | 差(Ⅲ) | Ⅲ |
| 顶板紫红色泥灰岩 | Ⅳ | Ⅳ | 差(Ⅲ) | Ⅳ |
), ArticleFig(id=1322907443809878135, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, language=EN, label=Table 4, caption=
Mechanical parameters of rock mass
, figureFileSmall=null, figureFileBig=null, tableContent=
| 岩性 | 密度/(g/cm3) | 抗拉强度/MPa | 黏聚力/MPa | 内摩擦角/(°) | 杨氏模量/GPa | 泊松比 |
|---|
| 矿体下盘大理岩 | 2.70 | 0.280 | 4.060 | 30.21 | 10.12 | 0.240 |
| 镜铁矿 | 3.26 | 0.760 | 8.200 | 35.37 | 31.62 | 0.200 |
| 矿体上盘片麻岩 | 2.69 | 0.030 | 3.540 | 34.69 | 4.49 | 0.270 |
| 顶板紫红色泥灰岩 | 2.69 | 0.216 | 4.652 | 25.27 | 6.32 | 0.238 |
), ArticleFig(id=1322907443948290169, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, language=CN, label=表4, caption=
矿岩体力学参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 岩性 | 密度/(g/cm3) | 抗拉强度/MPa | 黏聚力/MPa | 内摩擦角/(°) | 杨氏模量/GPa | 泊松比 |
|---|
| 矿体下盘大理岩 | 2.70 | 0.280 | 4.060 | 30.21 | 10.12 | 0.240 |
| 镜铁矿 | 3.26 | 0.760 | 8.200 | 35.37 | 31.62 | 0.200 |
| 矿体上盘片麻岩 | 2.69 | 0.030 | 3.540 | 34.69 | 4.49 | 0.270 |
| 顶板紫红色泥灰岩 | 2.69 | 0.216 | 4.652 | 25.27 | 6.32 | 0.238 |
), ArticleFig(id=1322907444074119290, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, language=EN, label=Table 5, caption=
Different support schemes
, figureFileSmall=null, figureFileBig=null, tableContent=
| 方案 | 支护类别 | 支护设计 |
|---|
| 1 | 无支护 | — |
| 2 | 锚杆+钢拱架支护 | 锚杆长度为1.8 m,间排距为1.0 m×1.0 m,每排11根,自巷道底板1.0 m处起锚;钢拱架采用36U型钢可伸缩性支架,间距为1.0 m,与锚杆错开布置,型钢横截面积为45.69×10–4 m2。 |
| 3 | 锚喷支护 | 锚杆长度为1.8 m,间排距为1.0 m×1.0 m,每排11根,自巷道底板1.0 m处起锚;混凝土强度等级为C20,喷射厚度为100 mm。 |
| 4 | 锚喷+钢拱架联合支护 | 锚杆长度为1.8 m,间排距为1.0 m×1.0 m,每排11根,自巷道底板1.0 m处起锚;钢拱架采用36U型钢可伸缩性支架,间距为1.0 m,与锚杆错开布置,型钢横截面积为45.69×10–4 m2,混凝土强度等级为C20,喷射厚度为100 mm。 |
), ArticleFig(id=1322907444149616763, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, language=CN, label=表5, caption=
不同支护方案设计
, figureFileSmall=null, figureFileBig=null, tableContent=
| 方案 | 支护类别 | 支护设计 |
|---|
| 1 | 无支护 | — |
| 2 | 锚杆+钢拱架支护 | 锚杆长度为1.8 m,间排距为1.0 m×1.0 m,每排11根,自巷道底板1.0 m处起锚;钢拱架采用36U型钢可伸缩性支架,间距为1.0 m,与锚杆错开布置,型钢横截面积为45.69×10–4 m2。 |
| 3 | 锚喷支护 | 锚杆长度为1.8 m,间排距为1.0 m×1.0 m,每排11根,自巷道底板1.0 m处起锚;混凝土强度等级为C20,喷射厚度为100 mm。 |
| 4 | 锚喷+钢拱架联合支护 | 锚杆长度为1.8 m,间排距为1.0 m×1.0 m,每排11根,自巷道底板1.0 m处起锚;钢拱架采用36U型钢可伸缩性支架,间距为1.0 m,与锚杆错开布置,型钢横截面积为45.69×10–4 m2,混凝土强度等级为C20,喷射厚度为100 mm。 |
), ArticleFig(id=1322907444246085756, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, language=EN, label=Table 6, caption=
Comparison of support effect of different support schemes
, figureFileSmall=null, figureFileBig=null, tableContent=
| 支护类型 | 应力/MPa | 位移/mm |
|---|
| 最大主应力 | 最小主应力 | 拱顶 | 拱底 | 左帮 | 右帮 |
|---|
| 无支护 | 0.645 | 54.28 | 49.36 | 84.21 | 29.92 | 29.29 |
| 锚杆+钢拱架支护 | 0.953 | 52.08 | 44.26 | 81.68 | 24.23 | 24.17 |
| 锚喷支护 | –0.563 | 46.67 | 28.40 | 31.10 | 11.36 | 11.48 |
| 锚喷+钢拱架联合支护 | –0.556 | 47.99 | 27.96 | 30.81 | 10.97 | 11.02 |
), ArticleFig(id=1322907444325777533, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322907427133326334, language=CN, label=表6, caption=
不同支护方案的支护效果对比
, figureFileSmall=null, figureFileBig=null, tableContent=
| 支护类型 | 应力/MPa | 位移/mm |
|---|
| 最大主应力 | 最小主应力 | 拱顶 | 拱底 | 左帮 | 右帮 |
|---|
| 无支护 | 0.645 | 54.28 | 49.36 | 84.21 | 29.92 | 29.29 |
| 锚杆+钢拱架支护 | 0.953 | 52.08 | 44.26 | 81.68 | 24.23 | 24.17 |
| 锚喷支护 | –0.563 | 46.67 | 28.40 | 31.10 | 11.36 | 11.48 |
| 锚喷+钢拱架联合支护 | –0.556 | 47.99 | 27.96 | 30.81 | 10.97 | 11.02 |
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