Article(id=1241687540000936587, tenantId=1146029695717560320, journalId=1240670690148397066, issueId=1241687532522492319, articleNumber=null, orderNo=null, doi=10.3963/j.issn.1001-487X.2023.03.029, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1662566400000, receivedDateStr=2022-09-08, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1773970978975, onlineDateStr=2026-03-20, pubDate=1693497600000, pubDateStr=2023-09-01, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1773970978975, onlineIssueDateStr=2026-03-20, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1773970978975, creator=13701087609, updateTime=1773970978975, updator=13701087609, issue=Issue{id=1241687532522492319, tenantId=1146029695717560320, journalId=1240670690148397066, year='2023', volume='40', issue='3', pageStart='1', pageEnd='242', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1773970977192, creator=13701087609, updateTime=1773971036114, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1241687779722187605, tenantId=1146029695717560320, journalId=1240670690148397066, issueId=1241687532522492319, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1241687779722187606, tenantId=1146029695717560320, journalId=1240670690148397066, issueId=1241687532522492319, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=212, endPage=216, ext={EN=ArticleExt(id=1241687541548634795, articleId=1241687540000936587, tenantId=1146029695717560320, journalId=1240670690148397066, language=EN, title=Numerical Simulation and Prevention Measures of Rockburst Hazard Against Bearing Coal Pillar, columnId=1240702076553065119, journalTitle=Blasting, columnName=BLASTING SAFETY, runingTitle=null, highlight=null, articleAbstract=
To solve the problem of impact danger to the coal pillars in the bearing section of the coal mine caused by rock burst, the stability analysis of the coal pillars was carried out using a theoretical analysis method during the excavation and backfilling periods of the B4328 working face of the Xinglongzhuang coal mine. The reasonable width of the coal pillars was calculated. A numerical calculation model was established using Phase2 to determine the stress distribution of the coal pillars in different mining states. Based on the degree of stress concentration on both sides of the roadway and the floor, a large-diameter borehole pre-pressure relief plan was implemented, and reinforcement measures for the transportation roadway before backfilling were also developed. The research results show that the plastic zone width of the coal pillar on the excavation side after transportation is 4.71 m and 14.45 m on the goaf. It is believed that the coal pillars are only affected by the impact of single-sided mining and the redistribution of drilling stresses, and the 25 m coal pillars are in a relatively stable state. At the same time, the simulation calculation shows that the transportation excavation area is located in the position where the supporting pressure peak drops in the goaf but the value is still relatively high, and the impact danger of the outer side of the coal pillar is greater than the inner side. Therefore, it is necessary to strengthen the support and take pre-pressure relief measures for the elastic area of the coal pillar. Because the coal pillar is less disturbed during the excavation period, and the two sides are basically in a plastic state after pressure relief, the elastic zone starts to produce plastic deformation, the elastic energy is released slowly, and the impact risk is reduced.
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为解决冲击地压矿井承载区段煤柱的冲击危险问题,以兴隆庄煤矿B4328工作面的实际开采情况为例,采用理论分析法在工作面掘进和回采期间对煤柱进行了稳定性力学分析,计算了合理煤柱宽度;建立了Phase2数值计算模型,得到该煤柱在不同采掘状态下的应力分布规律;根据应力集中程度在巷道两帮及底板实施大直径钻孔预卸压方案,同时制定了在工作面回采前运输顺槽支护的补强措施。研究结果表明:运顺掘出后巷道侧煤柱塑性区宽度为4.71 m,采空区侧塑性区宽度为14.45 m,认为煤柱仅受单侧的采动影响和掘巷应力重新分布影响,25 m煤柱处于相对稳定状态;同时模拟计算表明运顺开挖区域处于采空区支承压力峰值下降但数值仍较高的位置,且外帮冲击危险大于内帮,需要加强支护且对煤柱弹性核区域采取预卸压措施,由于承载区段煤柱在采掘期间受扰动较小,卸压后煤柱两侧将基本处于塑性状态,弹性区开始产生塑性变形,弹性能缓慢释放,冲击危险程度降低。冲击地压危险监测数据表明防冲效果较好,研究结论可为相似条件下较大尺寸的承载区段煤柱防冲问题提供理论与实践依据。
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陈学华(1972-),男,博士、教授,主要从事矿山压力与矿井动力灾害防治方面的研究,(E-mail)10478889@qq.com。
CHEN Xue-hua (1972-), male, Ph. D, professor, mainly engaged in research on mine pressure and mine power disaster prevention and control, (E-mail) 10478889@qq.com.
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陈学华(1972-),男,博士、教授,主要从事矿山压力与矿井动力灾害防治方面的研究,(E-mail)10478889@qq.com。
CHEN Xue-hua (1972-), male, Ph. D, professor, mainly engaged in research on mine pressure and mine power disaster prevention and control, (E-mail) 10478889@qq.com.
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陈学华(1972-),男,博士、教授,主要从事矿山压力与矿井动力灾害防治方面的研究,(E-mail)10478889@qq.com。
CHEN Xue-hua (1972-), male, Ph. D, professor, mainly engaged in research on mine pressure and mine power disaster prevention and control, (E-mail) 10478889@qq.com.
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Roadway arrangement of the No. B4328 coal face, figureFileSmall=rVv0o5iu6MepN+LrQqa4AQ==, figureFileBig=MRKVan+gCrmtkrO97pJZoA==, tableContent=null), ArticleFig(id=1241687548880277737, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687540000936587, language=CN, label=图1, caption=
B4328工作面巷道布置图, figureFileSmall=rVv0o5iu6MepN+LrQqa4AQ==, figureFileBig=MRKVan+gCrmtkrO97pJZoA==, tableContent=null), ArticleFig(id=1241687550604136700, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687540000936587, language=EN, label=Fig. 2, caption=
Elastic and plastic zones and stress distribution of stable coal pillar when one side is the goaf, figureFileSmall=V3foiHFAicT5gIBjoYsmjQ==, figureFileBig=hj6cyb9q0U5REC+E5q/OEg==, tableContent=null), ArticleFig(id=1241687550700605699, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687540000936587, language=CN, label=图2, caption=
一侧采空稳定煤柱弹塑性区及应力分布Ⅰ-破裂区;Ⅱ-塑性区;Ⅲ-应力升高的弹性区(弹性核)
, figureFileSmall=V3foiHFAicT5gIBjoYsmjQ==, figureFileBig=hj6cyb9q0U5REC+E5q/OEg==, tableContent=null), ArticleFig(id=1241687550818046221, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687540000936587, language=EN, label=Fig. 3, caption=
Numerical calculation model of coal pillar stress, figureFileSmall=P55J6YiED9xTKmSaLZBKrw==, figureFileBig=64K692OdGIaE98DZdT1Kew==, tableContent=null), ArticleFig(id=1241687550922903832, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687540000936587, language=CN, label=图3, caption=
煤柱应力数值计算模型, figureFileSmall=P55J6YiED9xTKmSaLZBKrw==, figureFileBig=64K692OdGIaE98DZdT1Kew==, tableContent=null), ArticleFig(id=1241687551023567136, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687540000936587, language=EN, label=Fig. 4, caption=
Abutment stress distribution after the mining in No. 4328 coal face, figureFileSmall=Im+tV97BTT7bVUXxtSbrDg==, figureFileBig=qy5K1m0OyRXEX14DyM8vAg==, tableContent=null), ArticleFig(id=1241687551203922218, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687540000936587, language=CN, label=图4, caption=
4328工作面回采后支承应力分布云图, figureFileSmall=Im+tV97BTT7bVUXxtSbrDg==, figureFileBig=qy5K1m0OyRXEX14DyM8vAg==, tableContent=null), ArticleFig(id=1241687551342334260, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687540000936587, language=EN, label=Fig. 5, caption=
Abutment stress distribution after the drivage of No. B4328 headentry, figureFileSmall=4ay5YUSuuosdObQ45Tq9dw==, figureFileBig=VWmEVVPCyfRJ5CUnVJy0Yw==, tableContent=null), ArticleFig(id=1241687551505912125, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687540000936587, language=CN, label=图5, caption=
B4328运顺掘进后支承应力分布云图, figureFileSmall=4ay5YUSuuosdObQ45Tq9dw==, figureFileBig=VWmEVVPCyfRJ5CUnVJy0Yw==, tableContent=null), ArticleFig(id=1241687551610769735, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687540000936587, language=EN, label=Fig. 6, caption=
Abutment stress distribution curve of No. B4328 headentry coal pillar in different periods, figureFileSmall=i/8XKfwkEV+asBI/U8UBhw==, figureFileBig=MLd74dddeYI5Ys4DlOpjTQ==, tableContent=null), ArticleFig(id=1241687551757570379, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687540000936587, language=CN, label=图6, caption=
B4328运顺煤柱在不同时期的支承应力分布曲线, figureFileSmall=i/8XKfwkEV+asBI/U8UBhw==, figureFileBig=MLd74dddeYI5Ys4DlOpjTQ==, tableContent=null), ArticleFig(id=1241687551828873554, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687540000936587, language=EN, label=Fig. 7, caption=
The chart of pressure relief arrangement of large diameter drilling holes on the roadway floor, figureFileSmall=Wl3NV6rJnBwhwwYCmJhd7g==, figureFileBig=X09/aNSOZbD2AtXnJaEdnw==, tableContent=null), ArticleFig(id=1241687551942119770, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687540000936587, language=CN, label=图7, caption=
底板大直径钻孔卸压布置示意图, figureFileSmall=Wl3NV6rJnBwhwwYCmJhd7g==, figureFileBig=X09/aNSOZbD2AtXnJaEdnw==, tableContent=null), ArticleFig(id=1241687552038588768, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687540000936587, language=EN, label=Fig. 8, caption=
The chart of top reinforced support, figureFileSmall=U0nPeL67VF9iFxZG4AjHCg==, figureFileBig=lJCgxx0dKkYkYal4RvMhew==, tableContent=null), ArticleFig(id=1241687552143446377, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687540000936587, language=CN, label=图8, caption=
顶部加强支护示意图, figureFileSmall=U0nPeL67VF9iFxZG4AjHCg==, figureFileBig=lJCgxx0dKkYkYal4RvMhew==, tableContent=null), ArticleFig(id=1241687552239915373, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687540000936587, language=EN, label=Fig. 9, caption=
The chart of reinforced support on the side, figureFileSmall=Q93gTo75cysOlGiIL1qkHg==, figureFileBig=EzRNtvTGrE8taE2WQnRdjg==, tableContent=null), ArticleFig(id=1241687552340578672, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687540000936587, language=CN, label=图9, caption=
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