Article(id=1322594941604315800, tenantId=1146029695717560320, journalId=1225396423026438145, issueId=1322594813749350688, 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=1711555200000, receivedDateStr=2024-03-28, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1793260806704, onlineDateStr=2026-10-29, pubDate=1740412800000, pubDateStr=2025-02-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793260806704, onlineIssueDateStr=2026-10-29, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793260806704, creator=13701087609, updateTime=1793260806704, updator=13701087609, issue=Issue{id=1322594813749350688, tenantId=1146029695717560320, journalId=1225396423026438145, year='2025', volume='45', issue='2', pageStart='1', pageEnd='288', issueExtLink='null', onlineDate='null', pubDate='1740412800000', pubDateStr='2025-02-25', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793260776220, creator='13701087609', updateTime=1793260776220, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext=null, issueFiles=null, downloadFileDto=null}, startPage=97, endPage=105, ext={EN=ArticleExt(id=1322594941772087961, articleId=1322594941604315800, tenantId=1146029695717560320, journalId=1225396423026438145, language=EN, title=Study on Deep Hole Loosening and Pre-Splitting Blasting Technology for Hard Rock Fault in Protective Layer Working Face, columnId=null, journalTitle=Mining Research and Development, columnName=null, runingTitle=null, highlight=null, articleAbstract=
In the process of protective layer mining, hard rock faults and hard nodules are often encountered, which causes that it is difficult for the shearer to cut, the cutting parts are seriously worn, and the advancing speed of the working face is seriously restricted. In order to solve the above problems, based on the engineering background of Ji15−17−13070 soft rock protective layer working face in Pingmei Thirteenth Mine, the mechanism of ultra-deep hole loose pre-splitting blasting was clarified. The radius range of the fracture zone in the fault hard rock was calculated to be 0.7−1.2 m. The influences of aperture and hole spacing on blasting effect were studied by numerical simulation method, and aperture and hole spacing were determined to be 94 mm and 2.0 m respectively. The technical scheme of “advance drilling in two roadways+ ultra-deep hole loose pre-splitting blasting in working face”, which can realize the parallel operation of propulsion and blasting, was put forward and the industrial test was carried out. The test results show that after adopting the technical scheme, the fault hard rock is fully broken, the wear of the shearer pick is reduced by more than 40%, the advancing speed of the working face is increased by about 25%, and the blasting pre-splitting effect is remarkable.
, authors=Zhanbiao YANG
1, 2, Chengyang SHEN
2, Shoude DUAN
1, Xufeng WANG
2, 3, 4, Xibing WANG
2, Xin WANG
2, Changxiong XIE
2, authorsList=Zhanbiao YANG, Chengyang SHEN, Shoude DUAN, Xufeng WANG, Xibing WANG, Xin WANG, Changxiong XIE, authorCompany=null, correspAuthors=Chengyang SHEN, 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=1322594946897527482, articleId=1322594941604315800, tenantId=1146029695717560320, journalId=1225396423026438145, language=CN, title=保护层工作面过硬岩断层超深孔松动预裂爆破技术研究, columnId=1226462294490657775, journalTitle=矿业研究与开发, columnName=采矿与矿山充填, runingTitle=null, highlight=null, articleAbstract=
保护层开采过程中经常会遇到硬岩断层、硬结核等,致使采煤机在直接推采时截割困难、截割部件磨损严重,严重制约了工作面推进速度。为解决上述问题,以平煤十三矿己15-17-13070软岩保护层工作面为工程背景,明确了超深孔松动预裂爆破机理,计算得出了断层硬岩裂隙区半径范围为0.7~1.2 m,通过数值模拟方法研究孔径和孔间距对爆破效果的影响,确定了孔径和孔间距分别为94 mm和2.0 m,提出了可实现推进、爆破平行作业的“两巷超前钻孔+工作面超深孔松动预裂爆破”技术方案并进行了工业试验。试验结果表明,采用该技术方案后,断层硬岩破碎充分,采煤机截齿磨损最大降低约40%,工作面推进速度增加约25%,爆破预裂效果显著。
, authors=杨战标
1, 2, 申成杨
2, 段守德
1, 王旭锋
2, 3, 4, 王袭冰
2, 王鑫
2, 谢昌雄
2, authorsList=杨战标, 申成杨, 段守德, 王旭锋, 王袭冰, 王鑫, 谢昌雄, authorCompany=null, correspAuthors=申成杨, authorNote=
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1, 2, address=
1.Pingdingshan Tianan Coal Mining Co., Ltd., Pingdingshan, Henan 467000, China
2.School of Mines, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1322594949376361164, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, authorId=1322594949221171912, language=CN, stringName=杨战标, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 2, address=
1.平顶山天安煤业股份有限公司,河南 平顶山市 467000
2.中国矿业大学 矿业工程学院,江苏 徐州市 221116, bio={"content":"
杨战标(1986—),男,河南郏县人,硕士研究生,高级工程师,主要从事煤矿开采相关工作。E-mail:yzb0309@126.com
"}, bioImg=null, bioContent=
杨战标(1986—),男,河南郏县人,硕士研究生,高级工程师,主要从事煤矿开采相关工作。E-mail:yzb0309@126.com
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2.School of Mines, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China), AuthorCompanyExt(id=1322594948969513664, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, companyId=1322594948952736446, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.中国矿业大学 矿业工程学院,江苏 徐州市 221116)])]), Author(id=1322594949472830158, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, orderNo=1, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=TS22020052A31TM@cumt.edu.cn, emailSecond=null, emailThird=null, correspondingAuthor=1, authorType=1, ext={EN=AuthorExt(id=1322594949577687760, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, authorId=1322594949472830158, language=EN, stringName=Chengyang SHEN, firstName=Chengyang, middleName=null, lastName=SHEN, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
2, address=
2.School of Mines, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1322594949657379537, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, authorId=1322594949472830158, language=CN, stringName=申成杨, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
2, address=
2.中国矿业大学 矿业工程学院,江苏 徐州市 221116, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1322594948952736446, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, xref=2., ext=[AuthorCompanyExt(id=1322594948961125055, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, companyId=1322594948952736446, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.School of Mines, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China), AuthorCompanyExt(id=1322594948969513664, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, companyId=1322594948952736446, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.中国矿业大学 矿业工程学院,江苏 徐州市 221116)])]), Author(id=1322594949741265619, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, orderNo=2, 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=1322594949841928917, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, authorId=1322594949741265619, language=EN, stringName=Shoude DUAN, firstName=Shoude, middleName=null, lastName=DUAN, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, address=
1.Pingdingshan Tianan Coal Mining Co., Ltd., Pingdingshan, Henan 467000, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1322594949921620694, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, authorId=1322594949741265619, language=CN, stringName=段守德, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, address=
1.平顶山天安煤业股份有限公司,河南 平顶山市 467000, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1322594948852073147, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, xref=1., ext=[AuthorCompanyExt(id=1322594948868850364, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, companyId=1322594948852073147, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1.Pingdingshan Tianan Coal Mining Co., Ltd., Pingdingshan, Henan 467000, China), AuthorCompanyExt(id=1322594948889821885, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, companyId=1322594948852073147, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1.平顶山天安煤业股份有限公司,河南 平顶山市 467000)])]), Author(id=1322594949992923864, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, 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=1322594950118752988, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, authorId=1322594949992923864, language=EN, stringName=Xufeng WANG, firstName=Xufeng, middleName=null, lastName=WANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
2, 3, 4, address=
2.School of Mines, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China
3.Jiangsu Engineering Laboratory of Mine Earthquake Monitoring and Prevention, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China
4.State Key Laboratory of Coking Coal Resources Green Exploitation, China Pingmei Shenma Group Co., Ltd., Pingdingshan, Henan 467000, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1322594950206833373, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, authorId=1322594949992923864, language=CN, stringName=王旭锋, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
2, 3, 4, address=
2.中国矿业大学 矿业工程学院,江苏 徐州市 221116
3.中国矿业大学 江苏省矿山地震监测工程实验室,江苏 徐州市 221116
4.中国平煤神马控股集团有限公司 炼焦煤资源绿色开发全国重点实验室,河南 平顶山市 467000, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1322594948952736446, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, xref=2., ext=[AuthorCompanyExt(id=1322594948961125055, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, companyId=1322594948952736446, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.School of Mines, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China), AuthorCompanyExt(id=1322594948969513664, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, companyId=1322594948952736446, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.中国矿业大学 矿业工程学院,江苏 徐州市 221116)]), AuthorCompany(id=1322594949036622529, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, xref=3., ext=[AuthorCompanyExt(id=1322594949045011138, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, companyId=1322594949036622529, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3.Jiangsu Engineering Laboratory of Mine Earthquake Monitoring and Prevention, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China), AuthorCompanyExt(id=1322594949057594051, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, companyId=1322594949036622529, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3.中国矿业大学 江苏省矿山地震监测工程实验室,江苏 徐州市 221116)]), AuthorCompany(id=1322594949133091524, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, xref=4., ext=[AuthorCompanyExt(id=1322594949141480133, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, companyId=1322594949133091524, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
4.State Key Laboratory of Coking Coal Resources Green Exploitation, China Pingmei Shenma Group Co., Ltd., Pingdingshan, Henan 467000, China), AuthorCompanyExt(id=1322594949149868742, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, companyId=1322594949133091524, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
4.中国平煤神马控股集团有限公司 炼焦煤资源绿色开发全国重点实验室,河南 平顶山市 467000)])]), Author(id=1322594950286525151, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, 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=1322594950382994145, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, authorId=1322594950286525151, language=EN, stringName=Xibing WANG, firstName=Xibing, middleName=null, lastName=WANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
2, address=
2.School of Mines, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1322594950471074530, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, authorId=1322594950286525151, language=CN, stringName=王袭冰, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
2, address=
2.中国矿业大学 矿业工程学院,江苏 徐州市 221116, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1322594948952736446, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, xref=2., ext=[AuthorCompanyExt(id=1322594948961125055, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, companyId=1322594948952736446, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.School of Mines, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China), AuthorCompanyExt(id=1322594948969513664, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, companyId=1322594948952736446, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.中国矿业大学 矿业工程学院,江苏 徐州市 221116)])]), Author(id=1322594950546572004, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, 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=1322594950626263782, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, authorId=1322594950546572004, language=EN, stringName=Xin WANG, firstName=Xin, middleName=null, lastName=WANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
2, address=
2.School of Mines, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1322594950718538471, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, authorId=1322594950546572004, language=CN, stringName=王鑫, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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2005., articleTitle=Study on deep hole loosening control blasting technology for preventing coal and gas outburst in coal roadway excavation, refAbstract=null)], funds=null, companyList=[AuthorCompany(id=1322594948852073147, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, xref=1., ext=[AuthorCompanyExt(id=1322594948868850364, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, companyId=1322594948852073147, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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3.中国矿业大学 江苏省矿山地震监测工程实验室,江苏 徐州市 221116)]), AuthorCompany(id=1322594949133091524, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, xref=4., ext=[AuthorCompanyExt(id=1322594949141480133, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, companyId=1322594949133091524, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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Roadway layout of 13070 rock protective layer working face, figureFileSmall=DLXSnVs+3Dk+aERjBNLpUg==, figureFileBig=haTDM9SmdB2qu8cBTSLJfA==, tableContent=null), ArticleFig(id=1322594953591636727, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, language=CN, label=图1, caption=
13070岩石保护层工作面巷道布置, figureFileSmall=DLXSnVs+3Dk+aERjBNLpUg==, figureFileBig=haTDM9SmdB2qu8cBTSLJfA==, tableContent=null), ArticleFig(id=1322594953805546232, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, language=EN, label=Fig.2, caption=
Comprehensive bar chart of 13070 rock protective layer working face, figureFileSmall=UISq6xBowPDJFDF7NDqUtA==, figureFileBig=ZR6Y41wJTrYTD8Ar6Zk51A==, tableContent=null), ArticleFig(id=1322594953885238009, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, language=CN, label=图2, caption=
13070岩石保护层工作面综合柱状图, figureFileSmall=UISq6xBowPDJFDF7NDqUtA==, figureFileBig=ZR6Y41wJTrYTD8Ar6Zk51A==, tableContent=null), ArticleFig(id=1322594953969124090, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, language=EN, label=Fig.3, caption=
Fault profile, figureFileSmall=8JozGOHalA/GexUJqicEWA==, figureFileBig=DIG2S241YjM2W/IIjDcVDw==, tableContent=null), ArticleFig(id=1322594954057204475, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, language=CN, label=图3, caption=
断层剖面, figureFileSmall=8JozGOHalA/GexUJqicEWA==, figureFileBig=DIG2S241YjM2W/IIjDcVDw==, tableContent=null), ArticleFig(id=1322594954128507644, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, language=EN, label=Fig.4, caption=
Zoning of surrounding rock failure in blast hole, figureFileSmall=MAYKyQE+XvMWwZTgIFhFKw==, figureFileBig=gGfs5WZYSuKRmgN6UJcMDQ==, tableContent=null), ArticleFig(id=1322594954212393725, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, language=CN, label=图4, caption=
炮孔围岩破坏分区, figureFileSmall=MAYKyQE+XvMWwZTgIFhFKw==, figureFileBig=gGfs5WZYSuKRmgN6UJcMDQ==, tableContent=null), ArticleFig(id=1322594954283696894, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, language=EN, label=Fig.5, caption=
Stress distribution cloud maps under different apertures at 100 μs of blasting, figureFileSmall=3YJWTJBZIa3/DMnw/9/ZXQ==, figureFileBig=mRTOzuSmBq/E979NQfUPlA==, tableContent=null), ArticleFig(id=1322594954359194367, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, language=CN, label=图5, caption=
爆破100 μs时不同孔径下的应力分布云图, figureFileSmall=3YJWTJBZIa3/DMnw/9/ZXQ==, figureFileBig=mRTOzuSmBq/E979NQfUPlA==, tableContent=null), ArticleFig(id=1322594954489217792, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, language=EN, label=Fig.6, caption=
Stress distribution cloud maps under different apertures at 300 μs of blasting, figureFileSmall=NZKWcvovGUqWMpzoNsz9VA==, figureFileBig=Q1UvdaapkJCjGNn3f9REOA==, tableContent=null), ArticleFig(id=1322594954556326657, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, language=CN, label=图6, caption=
爆破300 μs时不同孔径下的应力分布云图, figureFileSmall=NZKWcvovGUqWMpzoNsz9VA==, figureFileBig=Q1UvdaapkJCjGNn3f9REOA==, tableContent=null), ArticleFig(id=1322594954652795650, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, language=EN, label=Fig.7, caption=
Stress variation curves of measuring points under different apertures, figureFileSmall=22kkwUY5/1cv4w1ftkO1Fg==, figureFileBig=sd47eeI2ZAzqd6DlKE5sww==, tableContent=null), ArticleFig(id=1322594954753458947, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, language=CN, label=图7, caption=
不同孔径下测点应力变化曲线, figureFileSmall=22kkwUY5/1cv4w1ftkO1Fg==, figureFileBig=sd47eeI2ZAzqd6DlKE5sww==, tableContent=null), ArticleFig(id=1322594954837345028, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, language=EN, label=Fig.8, caption=
Crack propagation in rock mass under different apertures at 1 000 μs of blasting, figureFileSmall=vX0lEDJUvzNvPHIJX0t/uQ==, figureFileBig=psS2q+MRYQUIbKvSFxlxuw==, tableContent=null), ArticleFig(id=1322594954929619717, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, language=CN, label=图8, caption=
爆破1 000 μs时不同孔径下岩体内裂隙扩展情况, figureFileSmall=vX0lEDJUvzNvPHIJX0t/uQ==, figureFileBig=psS2q+MRYQUIbKvSFxlxuw==, tableContent=null), ArticleFig(id=1322594955034477318, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, language=EN, label=Fig.9, caption=
Stress distribution cloud maps under different hole spacing at 200 μs of blasting, figureFileSmall=8+9TTqAprEcntIiq9XTsQQ==, figureFileBig=zkBgSCmSqzH+V8T6C07Zqw==, tableContent=null), ArticleFig(id=1322594955118363399, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, language=CN, label=图9, caption=
爆破200 μs时不同孔间距下的应力分布云图, figureFileSmall=8+9TTqAprEcntIiq9XTsQQ==, figureFileBig=zkBgSCmSqzH+V8T6C07Zqw==, tableContent=null), ArticleFig(id=1322594955210638088, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, language=EN, label=Fig.10, caption=
Stress variation curves of measuring points under different hole spacing, figureFileSmall=HTqv3q93jOycltBSp/xRyw==, figureFileBig=KcxWqS/HIT6WeA6ucaxaRg==, tableContent=null), ArticleFig(id=1322594955294524169, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, language=CN, label=图10, caption=
不同孔间距下测点应力变化曲线, figureFileSmall=HTqv3q93jOycltBSp/xRyw==, figureFileBig=KcxWqS/HIT6WeA6ucaxaRg==, tableContent=null), ArticleFig(id=1322594955361633034, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, language=EN, label=Fig.11, caption=
Crack propagation in rock mass under different hole spacing at 1 000 μs of blasting, figureFileSmall=aAUxiBLz+GBP2fYw5wnONQ==, figureFileBig=ZPEyKIR/Y7NPbP/wL/0GQg==, tableContent=null), ArticleFig(id=1322594955445519115, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, language=CN, label=图11, caption=
爆破1 000 μs时不同孔间距下岩体内裂隙扩展情况, figureFileSmall=aAUxiBLz+GBP2fYw5wnONQ==, figureFileBig=ZPEyKIR/Y7NPbP/wL/0GQg==, tableContent=null), ArticleFig(id=1322594955508433676, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, language=EN, label=Fig.12, caption=
Blast hole layout, figureFileSmall=mFNMrdZFrnD1sKv7Bp7c6A==, figureFileBig=wxo559tv03BsbrKn444XZA==, tableContent=null), ArticleFig(id=1322594955604902669, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, language=CN, label=图12, caption=
炮孔布置, figureFileSmall=mFNMrdZFrnD1sKv7Bp7c6A==, figureFileBig=wxo559tv03BsbrKn444XZA==, tableContent=null), ArticleFig(id=1322594955680400142, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, language=EN, label=Fig.13, caption=
“Two plugs and two injections” sealing device, figureFileSmall=c0FbIJSa4wFegKNgbSXUHg==, figureFileBig=NDkJvz+PrgJHRTemHkkdCg==, tableContent=null), ArticleFig(id=1322594955776869135, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, language=CN, label=图13, caption=
“两堵两注”封孔器示意, figureFileSmall=c0FbIJSa4wFegKNgbSXUHg==, figureFileBig=NDkJvz+PrgJHRTemHkkdCg==, tableContent=null), ArticleFig(id=1322594955843978000, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, language=EN, label=Fig.14, caption=
Borehole peep view, figureFileSmall=tnjvgjhSdrteU/NW0V0GPQ==, figureFileBig=19b2eDBc/AuB3oIy56v3wQ==, tableContent=null), ArticleFig(id=1322594955919475473, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, language=CN, label=图14, caption=
钻孔窥视图, figureFileSmall=tnjvgjhSdrteU/NW0V0GPQ==, figureFileBig=19b2eDBc/AuB3oIy56v3wQ==, tableContent=null), ArticleFig(id=1322594957576225554, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, language=EN, label=Table 1, caption=
Main mechanical parameters of rock mass
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| 岩石名称 | 抗压强度/MPa | 抗拉强度/MPa | 内摩擦角/(°) | 黏聚力/MPa |
|---|
| 泥岩 | 22.3 | 0.8 | 33 | 2.2 |
| 断层砂岩 | 105.1 | 2.7 | 37 | 4.2 |
), ArticleFig(id=1322594957664305939, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, language=CN, label=表1, caption=
主要岩体力学参数
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| 岩石名称 | 抗压强度/MPa | 抗拉强度/MPa | 内摩擦角/(°) | 黏聚力/MPa |
|---|
| 泥岩 | 22.3 | 0.8 | 33 | 2.2 |
| 断层砂岩 | 105.1 | 2.7 | 37 | 4.2 |
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Air and state equation parameters
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| 密度R0/(×10–3g/cm) | 空气状态方程参数 |
|---|
| E0/GPa | C0 | C1 | C2 | C3 | C4 | C5 |
|---|
| 1.29 | 0.002 5 | 0 | 0 | 0 | 0 | 0.4 | 0.4 |
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空气及状态方程参数
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| 密度R0/(×10–3g/cm) | 空气状态方程参数 |
|---|
| E0/GPa | C0 | C1 | C2 | C3 | C4 | C5 |
|---|
| 1.29 | 0.002 5 | 0 | 0 | 0 | 0 | 0.4 | 0.4 |
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Explosive and state equation parameters
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| 密度R0/(g/cm3) | 爆速D/(m/s) | 初始内能E0/GPa | 相对体积V0 | JWL状态方程参数 |
|---|
| a/GPa | b/GPa | ω | R1 | R2 |
|---|
| 1.25 | 3 500 | 7.0 | 1.0 | 268 | 21.8 | 0.3 | 0.79 | 1.8 |
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炸药及状态方程参数
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| 密度R0/(g/cm3) | 爆速D/(m/s) | 初始内能E0/GPa | 相对体积V0 | JWL状态方程参数 |
|---|
| a/GPa | b/GPa | ω | R1 | R2 |
|---|
| 1.25 | 3 500 | 7.0 | 1.0 | 268 | 21.8 | 0.3 | 0.79 | 1.8 |
), ArticleFig(id=1322594958117290776, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, language=EN, label=Table 4, caption=
Rock model parameters
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| 密度R0/(g/cm3) | A | B | C | 压力系数/GPa | 剪切模量G/GPa | 抗拉强度T/MPa | N | D1 | D2 |
|---|
| K1 | K2 | K3 |
|---|
| 2.68 | 0.79 | 1.8 | 0.007 | 85 | –171 | 207.9 | 21.8 | 2.7 | 0.81 | 0.04 | 1 |
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岩石模型参数
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| 密度R0/(g/cm3) | A | B | C | 压力系数/GPa | 剪切模量G/GPa | 抗拉强度T/MPa | N | D1 | D2 |
|---|
| K1 | K2 | K3 |
|---|
| 2.68 | 0.79 | 1.8 | 0.007 | 85 | –171 | 207.9 | 21.8 | 2.7 | 0.81 | 0.04 | 1 |
), ArticleFig(id=1322594958247314202, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, language=EN, label=Table 5, caption=
Parameters of ultra-deep hole loosening pre-splitting blasting
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| 孔径/mm | 孔间距/m | 孔深/m | 炮孔排距/排 | 机巷倾角/(°) | 风巷倾角/(°) |
|---|
| 94 | 2 | 60 | 1 | –8 | 8 |
), ArticleFig(id=1322594958314423067, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, language=CN, label=表5, caption=
超深孔松动预裂爆破参数
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| 孔径/mm | 孔间距/m | 孔深/m | 炮孔排距/排 | 机巷倾角/(°) | 风巷倾角/(°) |
|---|
| 94 | 2 | 60 | 1 | –8 | 8 |
), ArticleFig(id=1322594958436057884, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, language=EN, label=Table 6, caption=
Shearer pick loss after blasting
, figureFileSmall=null, figureFileBig=null, tableContent=
| 第1天 | 第2天 | 第3天 | 第4天 | 第5天 | 第6天 |
|---|
| 38 | 37 | 32 | 34 | 25 | 13 |
), ArticleFig(id=1322594958528332573, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, language=CN, label=表6, caption=
爆破后采煤机截齿损耗
, figureFileSmall=null, figureFileBig=null, tableContent=
| 第1天 | 第2天 | 第3天 | 第4天 | 第5天 | 第6天 |
|---|
| 38 | 37 | 32 | 34 | 25 | 13 |
), ArticleFig(id=1322594958616412958, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, language=EN, label=Table 7, caption=
Daily footage of working face after blasting
, figureFileSmall=null, figureFileBig=null, tableContent=
| 第1天 | 第2天 | 第3天 | 第4天 | 第5天 | 第6天 |
|---|
| 5.5 | 4.5 | 6.0 | 4.5 | 6.5 | 5.0 |
), ArticleFig(id=1322594958696104735, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322594941604315800, language=CN, label=表7, caption=
爆破后工作面日进尺
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| 第1天 | 第2天 | 第3天 | 第4天 | 第5天 | 第6天 |
|---|
| 5.5 | 4.5 | 6.0 | 4.5 | 6.5 | 5.0 |
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