循环水浸作用下煤体孔隙与损伤演化机制实验研究
TD315; 煤柱坝体作为矿井采空区水库的主要承载结构,在多场耦合影响下的损伤失稳机制直接制约采空区水库的长期安全稳定运行.本文借助核磁共振(NMR)研究了"单侧"浸水条件下不同次数循环浸水下煤样T2 谱图、孔喉、孔隙率变化和核磁图像演化规律,分析了单侧循环浸水次数不断增加下煤样内部孔隙演化规律以及单轴压缩破坏形态特征,揭示了煤样水浸损伤破坏机制,结果表明,随循环浸水次数的增加,煤样孔隙数、孔喉占比、孔隙率均保持增长的态势,分别增长了67.18%、3.48%、3.49%.煤样单轴抗压强度与残余强度逐渐减小,煤样的平均峰值强度由15.74 MPa依次下降到11.76、9.65...
Saved in:
| Published in | 矿业科学学报 Vol. 9; no. 4; pp. 608 - 618 |
|---|---|
| Main Authors | , , , , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
中国矿业大学煤炭精细勘探与智能开发全国重点实验室,江苏徐州 221116%中国矿业大学(北京)能源与矿业学院,北京 100083%中国矿业大学矿业工程学院,江苏徐州 221116%神东煤炭集团锦界煤矿,陕西榆林 719319
01.08.2024
中国矿业大学矿业工程学院,江苏徐州 221116 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 2096-2193 |
| DOI | 10.19606/j.cnki.jmst.2024.04.012 |
Cover
| Abstract | TD315; 煤柱坝体作为矿井采空区水库的主要承载结构,在多场耦合影响下的损伤失稳机制直接制约采空区水库的长期安全稳定运行.本文借助核磁共振(NMR)研究了"单侧"浸水条件下不同次数循环浸水下煤样T2 谱图、孔喉、孔隙率变化和核磁图像演化规律,分析了单侧循环浸水次数不断增加下煤样内部孔隙演化规律以及单轴压缩破坏形态特征,揭示了煤样水浸损伤破坏机制,结果表明,随循环浸水次数的增加,煤样孔隙数、孔喉占比、孔隙率均保持增长的态势,分别增长了67.18%、3.48%、3.49%.煤样单轴抗压强度与残余强度逐渐减小,煤样的平均峰值强度由15.74 MPa依次下降到11.76、9.65、8.41 MPa,循环浸水9 次煤样相较于初始状态煤样的平均单轴抗压强度下降46.56%,平均残余强度从未循环浸水的5.55 MPa依次下降到3.08、2.44、0 MPa.煤样单侧循环浸水水分子由浸水侧逐渐向煤样内部渗流,最后扩展至整个煤样,进一步造成孔隙率增加.长期的循环浸水对煤样的软化作用十分显著.研究结果为采空区水库空间结构稳定性控制提供了科学依据. |
|---|---|
| AbstractList | TD315; 煤柱坝体作为矿井采空区水库的主要承载结构,在多场耦合影响下的损伤失稳机制直接制约采空区水库的长期安全稳定运行.本文借助核磁共振(NMR)研究了"单侧"浸水条件下不同次数循环浸水下煤样T2 谱图、孔喉、孔隙率变化和核磁图像演化规律,分析了单侧循环浸水次数不断增加下煤样内部孔隙演化规律以及单轴压缩破坏形态特征,揭示了煤样水浸损伤破坏机制,结果表明,随循环浸水次数的增加,煤样孔隙数、孔喉占比、孔隙率均保持增长的态势,分别增长了67.18%、3.48%、3.49%.煤样单轴抗压强度与残余强度逐渐减小,煤样的平均峰值强度由15.74 MPa依次下降到11.76、9.65、8.41 MPa,循环浸水9 次煤样相较于初始状态煤样的平均单轴抗压强度下降46.56%,平均残余强度从未循环浸水的5.55 MPa依次下降到3.08、2.44、0 MPa.煤样单侧循环浸水水分子由浸水侧逐渐向煤样内部渗流,最后扩展至整个煤样,进一步造成孔隙率增加.长期的循环浸水对煤样的软化作用十分显著.研究结果为采空区水库空间结构稳定性控制提供了科学依据. |
| Abstract_FL | As the main bearing structure of the reservoir in the goaf of the mine,the damage instability mechanism under the influence of multi-field coupling of water immersion directly restricts the long-term safe and stable operation of the reservoir in the goaf.In this paper,nuclear magnetic resonance(NMR)was used to study the T2 spectrum,pore throat,porosity change and nuclear magnetic image evolution of coal samples under different times of cyclic immersion under'unilateral'immersion conditions.With the increase of cyclic immersion times,the number of pores,pore throat ratio and porosity of coal sam-ples maintained an increasing trend,which increased by 67.18%,3.48% and 3.49% respective-ly.The nuclear magnetic resonance imaging further obtained the permeability and pore change law of water molecules in different times of unilateral cyclic immersion of coal samples:the water molecules in unilateral cyclic immersion of coal samples gradually flow from the immersion side to the internal of coal samples,and finally expand to the whole coal samples,further resulting in an increase in porosity.With the increase of cyclic soaking times,the uniaxial compressive strength and residual strength of coal sam-ples decreased gradually.The average peak strength of coal samples decreased from 15.74 MPa to 11.76 MPa,9.65 MPa and 8.41 MPa,respectively.The average uniaxial compressive strength of coal samples decreased by 46.56% compared with that of initial coal samples.The average residual strength decreased from 5.55 MPa to 3.08,2.44 and 0 MPa,respectively.Long-term cyclic immersion has a sig-nificant softening effect on coal samples.Based on the experimental results,the evolution law of internal pores and the morphological characteristics of uniaxial compression failure of coal samples under the in-creasing number of unilateral cyclic immersion were analyzed,and the mechanism of water immersion damage and failure of coal samples was revealed.The experimental results provide a scientific basis for the stability control of reservoir spatial structure in goaf. |
| Author | 成家章 张村 王方田 窦凤金 汤天阔 贾胜 |
| AuthorAffiliation | 中国矿业大学矿业工程学院,江苏徐州 221116;中国矿业大学煤炭精细勘探与智能开发全国重点实验室,江苏徐州 221116%中国矿业大学(北京)能源与矿业学院,北京 100083%中国矿业大学矿业工程学院,江苏徐州 221116%神东煤炭集团锦界煤矿,陕西榆林 719319 |
| AuthorAffiliation_xml | – name: 中国矿业大学矿业工程学院,江苏徐州 221116;中国矿业大学煤炭精细勘探与智能开发全国重点实验室,江苏徐州 221116%中国矿业大学(北京)能源与矿业学院,北京 100083%中国矿业大学矿业工程学院,江苏徐州 221116%神东煤炭集团锦界煤矿,陕西榆林 719319 |
| Author_FL | WANG Fangtian ZHANG Cun JIA Sheng CHENG Jiazhang DOU Fengjin TANG Tiankuo |
| Author_FL_xml | – sequence: 1 fullname: WANG Fangtian – sequence: 2 fullname: ZHANG Cun – sequence: 3 fullname: TANG Tiankuo – sequence: 4 fullname: JIA Sheng – sequence: 5 fullname: CHENG Jiazhang – sequence: 6 fullname: DOU Fengjin |
| Author_xml | – sequence: 1 fullname: 王方田 – sequence: 2 fullname: 张村 – sequence: 3 fullname: 汤天阔 – sequence: 4 fullname: 贾胜 – sequence: 5 fullname: 成家章 – sequence: 6 fullname: 窦凤金 |
| BookMark | eNotj7tKA0EYRqeIYIx5BzurXf-5ZGa31OANAjZah9nLSHZ1Aq5ifABBMKZxEZSgFik04KXQsEji0-yFvIURhQNfdz7OAirptvYRWsJgYpsDXwlMV4ctMziMjk0ChJkwA5MSKhOwuUGwTedRNYpaDtQwFUxwq4zWsu9h0XvL3z_yzySd9Iv4KU0ui_NBOrnOXuLp3W2a9PKrh3Q8yMdx1r3J-1_ZxSh7vZ8Ou8VjXDyPFtGckgeRX_3fCtrbWN-tbxmNnc3t-mrDiDAQYjBOpcuEsjgXmBNgNgiLKOo7xJOUWyA8l2GLgfQc6thMCQaMM1f5StGa79EKWv7znkqtpN5vBu2TIz17bIZnYafj_DYDmxXTHxkWaEk |
| ClassificationCodes | TD315 |
| ContentType | Journal Article |
| Copyright | Copyright © Wanfang Data Co. Ltd. All Rights Reserved. |
| Copyright_xml | – notice: Copyright © Wanfang Data Co. Ltd. All Rights Reserved. |
| DBID | 2B. 4A8 92I 93N PSX TCJ |
| DOI | 10.19606/j.cnki.jmst.2024.04.012 |
| DatabaseName | Wanfang Data Journals - Hong Kong WANFANG Data Centre Wanfang Data Journals 万方数据期刊 - 香港版 China Online Journals (COJ) China Online Journals (COJ) |
| DatabaseTitleList | |
| DeliveryMethod | fulltext_linktorsrc |
| DocumentTitle_FL | Pore and strength damage evolution mechanism of coal induced by the circulating water immersion effect |
| EndPage | 618 |
| ExternalDocumentID | kykxxb202404012 |
| GrantInformation_xml | – fundername: (国家自然科学基金); (国家自然科学基金); (徐州市重点研发计划); (中国博士后基金); (中国矿业大学研究生创新计划项目) funderid: (国家自然科学基金); (国家自然科学基金); (徐州市重点研发计划); (中国博士后基金); (中国矿业大学研究生创新计划项目) |
| GroupedDBID | -0B -SB -S~ 2B. 2RA 4A8 5VR 92I 92M 93N 9D9 9DB AAITT AFUIB ALMA_UNASSIGNED_HOLDINGS CAJEB CQIGP GROUPED_DOAJ PB1 PB9 PSX Q-- R-B RT2 T8R TCJ U1F U5B |
| ID | FETCH-LOGICAL-s1022-463ac47f86671620490782f3eb2da36807dc41840adb3b94f740464cfeff35ed3 |
| ISSN | 2096-2193 |
| IngestDate | Thu May 29 04:07:01 EDT 2025 |
| IsPeerReviewed | false |
| IsScholarly | true |
| Issue | 4 |
| Keywords | 采空区水库 孔隙演化 goaf reservoir pore evolution coal pillar dam 循环水浸 water immersion weakening circulating water immersion 煤柱坝体 水浸弱化 |
| Language | Chinese |
| LinkModel | OpenURL |
| MergedId | FETCHMERGED-LOGICAL-s1022-463ac47f86671620490782f3eb2da36807dc41840adb3b94f740464cfeff35ed3 |
| PageCount | 11 |
| ParticipantIDs | wanfang_journals_kykxxb202404012 |
| PublicationCentury | 2000 |
| PublicationDate | 2024-08-01 |
| PublicationDateYYYYMMDD | 2024-08-01 |
| PublicationDate_xml | – month: 08 year: 2024 text: 2024-08-01 day: 01 |
| PublicationDecade | 2020 |
| PublicationTitle | 矿业科学学报 |
| PublicationYear | 2024 |
| Publisher | 中国矿业大学煤炭精细勘探与智能开发全国重点实验室,江苏徐州 221116%中国矿业大学(北京)能源与矿业学院,北京 100083%中国矿业大学矿业工程学院,江苏徐州 221116%神东煤炭集团锦界煤矿,陕西榆林 719319 中国矿业大学矿业工程学院,江苏徐州 221116 |
| Publisher_xml | – name: 中国矿业大学矿业工程学院,江苏徐州 221116 – name: 中国矿业大学煤炭精细勘探与智能开发全国重点实验室,江苏徐州 221116%中国矿业大学(北京)能源与矿业学院,北京 100083%中国矿业大学矿业工程学院,江苏徐州 221116%神东煤炭集团锦界煤矿,陕西榆林 719319 |
| SSID | ssib051374768 ssib043749106 ssj0002857281 ssib029826694 ssib041261948 ssib036434758 |
| Score | 2.4090173 |
| Snippet | TD315; 煤柱坝体作为矿井采空区水库的主要承载结构,在多场耦合影响下的损伤失稳机制直接制约采空区水库的长期安全稳定运行.本文借助核磁共振(NMR)研究了"单侧"浸水条件下... |
| SourceID | wanfang |
| SourceType | Aggregation Database |
| StartPage | 608 |
| Title | 循环水浸作用下煤体孔隙与损伤演化机制实验研究 |
| URI | https://d.wanfangdata.com.cn/periodical/kykxxb202404012 |
| Volume | 9 |
| hasFullText | 1 |
| inHoldings | 1 |
| isFullTextHit | |
| isPrint | |
| journalDatabaseRights | – providerCode: PRVAON databaseName: DOAJ Directory of Open Access Journals issn: 2096-2193 databaseCode: DOA dateStart: 20160101 customDbUrl: isFulltext: true dateEnd: 99991231 titleUrlDefault: https://www.doaj.org/ omitProxy: true ssIdentifier: ssj0002857281 providerName: Directory of Open Access Journals |
| link | http://utb.summon.serialssolutions.com/2.0.0/link/0/eLvHCXMwnV3Na9RAFA-lvXgRRcVvenBOJXUzmUxmjpltliLoqYXeSj7VFlewLdTeBcHai0VQinroQQt-HLQUaf1r9oP-F773kt1N7Yq2l-Xx8mbe730kefN2kljWLeVkSiReZieR0LZw08SO4JSyOf6Flkvh5BE29O_ek9Oz4s6cNzcy1q7sWlpZjieTtaHPlZwmqsCDuOJTsieIbH9SYAAN8YVfiDD8_leMWegxE7IgYKHPFBANFkpmaswIIuCoYqFgZorpOspowYKCo5gyNMpjgejJuDhhMIVioWY6YFr3hEOcUMGhBnHqNEoigcIeU0BI5IAiExBHMSNpwpDpECcEnIpgBDUaBYQGmWp9TCAbzDRKvZpMC4DplNgCWSEAUsACr5c1pRvQMolwjC6NNrWBiEfoayQC9jiDIzDAIbvIJ4ANnQAYxEBEoWvB5UAoF2ytNk246G_ZK9K8tAGwwozaoIuHmFco8ytW9aMCBKfhPjOc1AJhmCIXgJUADl0AgedH4gRhwxgQRjNVmqxqNKpRuhJVqAowzZSPAS6UoueOR444AIzXS2dhNlAmwbRFLmrSYsDMcILDsh-bNt4pHcFVL7N8EoNQ1xnXFcMkMlFl3_ih0xZu1egX8BSvH592wqFlwumxDpUBNwQeJXBxug2FcjJH0owYlEJNfVi2aMRdJAkQmBuazvwCpVeehP1RBW6EQrBAAKCAFkNXExilihMbMPkTPizFyuqDygde09KGesSt1jq6ckkXlbpF1lSlBJZFSXSsusJuB5VXSXPx4eTCoyXcjM4FvSu6fBji6LvrF58urq7GKAO1An4Lfoz7UvJK5wtu-1wrWCUMygIXFknCH2zWEA52eQZdG-H6Qlc2h3gOMHpdkwX6v8DzOX2euu-Dcg8nGnD7L_Dpqc1mHjXvVxYYM-ess2VnYDwoLvPnrZG1Bxcs0_6109342vn2vfNjr3Ww1d382Np70X223Tp41f68efj2TWtvo_PyfWt_u7O_2V5_3dn62X6-2_7y7nBnvfths_tp96I12whn6tN2-dkbewnbb7aQbpQIP1dS4uv9cGsGLONyN4t5GrlS1fw0EdiYi9LYjbXIfYH7U5I8y3PXy1L3kjXafNzMLlvjcaz81PGjNBLgIp7ETgrSmdIikVnieles8dLm-fK2tjT_R8yu_lvkmnVmcI29bo0uP1nJbsBSbTm-SYH-DWm-GH8 |
| linkProvider | Directory of Open Access Journals |
| openUrl | ctx_ver=Z39.88-2004&ctx_enc=info%3Aofi%2Fenc%3AUTF-8&rfr_id=info%3Asid%2Fsummon.serialssolutions.com&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.atitle=%E5%BE%AA%E7%8E%AF%E6%B0%B4%E6%B5%B8%E4%BD%9C%E7%94%A8%E4%B8%8B%E7%85%A4%E4%BD%93%E5%AD%94%E9%9A%99%E4%B8%8E%E6%8D%9F%E4%BC%A4%E6%BC%94%E5%8C%96%E6%9C%BA%E5%88%B6%E5%AE%9E%E9%AA%8C%E7%A0%94%E7%A9%B6&rft.jtitle=%E7%9F%BF%E4%B8%9A%E7%A7%91%E5%AD%A6%E5%AD%A6%E6%8A%A5&rft.au=%E7%8E%8B%E6%96%B9%E7%94%B0&rft.au=%E5%BC%A0%E6%9D%91&rft.au=%E6%B1%A4%E5%A4%A9%E9%98%94&rft.au=%E8%B4%BE%E8%83%9C&rft.date=2024-08-01&rft.pub=%E4%B8%AD%E5%9B%BD%E7%9F%BF%E4%B8%9A%E5%A4%A7%E5%AD%A6%E7%85%A4%E7%82%AD%E7%B2%BE%E7%BB%86%E5%8B%98%E6%8E%A2%E4%B8%8E%E6%99%BA%E8%83%BD%E5%BC%80%E5%8F%91%E5%85%A8%E5%9B%BD%E9%87%8D%E7%82%B9%E5%AE%9E%E9%AA%8C%E5%AE%A4%2C%E6%B1%9F%E8%8B%8F%E5%BE%90%E5%B7%9E+221116%25%E4%B8%AD%E5%9B%BD%E7%9F%BF%E4%B8%9A%E5%A4%A7%E5%AD%A6%28%E5%8C%97%E4%BA%AC%29%E8%83%BD%E6%BA%90%E4%B8%8E%E7%9F%BF%E4%B8%9A%E5%AD%A6%E9%99%A2%2C%E5%8C%97%E4%BA%AC+100083%25%E4%B8%AD%E5%9B%BD%E7%9F%BF%E4%B8%9A%E5%A4%A7%E5%AD%A6%E7%9F%BF%E4%B8%9A%E5%B7%A5%E7%A8%8B%E5%AD%A6%E9%99%A2%2C%E6%B1%9F%E8%8B%8F%E5%BE%90%E5%B7%9E+221116%25%E7%A5%9E%E4%B8%9C%E7%85%A4%E7%82%AD%E9%9B%86%E5%9B%A2%E9%94%A6%E7%95%8C%E7%85%A4%E7%9F%BF%2C%E9%99%95%E8%A5%BF%E6%A6%86%E6%9E%97+719319&rft.issn=2096-2193&rft.volume=9&rft.issue=4&rft.spage=608&rft.epage=618&rft_id=info:doi/10.19606%2Fj.cnki.jmst.2024.04.012&rft.externalDocID=kykxxb202404012 |
| thumbnail_s | http://utb.summon.serialssolutions.com/2.0.0/image/custom?url=http%3A%2F%2Fwww.wanfangdata.com.cn%2Fimages%2FPeriodicalImages%2Fkykxxb%2Fkykxxb.jpg |