基于CT扫描的三维重构煤体加载损伤演化特征及尺寸效应
TD315; 煤体是一种包含孔隙结构和矿物成分的多孔材料,具有明显的各向异性和尺寸效应.为研究煤体各向异性及尺寸效应对破坏特征的影响,本文提出了一种基于CT扫描、核磁共振和X衍射等技术手段的煤样内部孔隙、矿物成分表征和三维重构模拟方法.在此基础上,反演实验室单轴压缩获得了三维重构模型煤基质和矿物成分的模拟参数,进一步模拟分析了不同宽高比煤体的强度损伤特征.模拟结果表明:①在加载过程中,塑性区首先在孔隙和矿物成分周边逐渐向外扩展连通.在空间分布上,塑性区前期由加载端垂直向内部扩展,后期转变为由四周水平向内部扩展,最终模型破坏的非塑性区形成"双圆台结构体".②随着宽高比的增加,...
Saved in:
| Published in | 矿业科学学报 Vol. 9; no. 3; pp. 413 - 425 |
|---|---|
| Main Authors | , , , , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
中国矿业大学(北京)共伴生能源精准开采北京市重点实验室,北京 100083
01.06.2024
中国矿业大学(北京)厚煤层绿色智能开采教育部工程研究中心,北京 100083%中国矿业大学(北京)共伴生能源精准开采北京市重点实验室,北京 100083%中国矿业大学矿业工程学院,江苏徐州 221116%中国地质大学(北京)地质安全研究院,北京 100083 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 2096-2193 |
| DOI | 10.19606/j.cnki.jmst.2024.03.010 |
Cover
| Abstract | TD315; 煤体是一种包含孔隙结构和矿物成分的多孔材料,具有明显的各向异性和尺寸效应.为研究煤体各向异性及尺寸效应对破坏特征的影响,本文提出了一种基于CT扫描、核磁共振和X衍射等技术手段的煤样内部孔隙、矿物成分表征和三维重构模拟方法.在此基础上,反演实验室单轴压缩获得了三维重构模型煤基质和矿物成分的模拟参数,进一步模拟分析了不同宽高比煤体的强度损伤特征.模拟结果表明:①在加载过程中,塑性区首先在孔隙和矿物成分周边逐渐向外扩展连通.在空间分布上,塑性区前期由加载端垂直向内部扩展,后期转变为由四周水平向内部扩展,最终模型破坏的非塑性区形成"双圆台结构体".②随着宽高比的增加,煤样的抗压强度(p)、达到屈服强度时的应变(ζ)以及弹性模量(K)均会增加,其中ζ和K呈线性增加,而p增幅逐渐减小.③在煤样单轴加载过程中总能量和弹性能呈指数增加,耗散能呈线性增加.随着宽高比增加,煤体内积聚的弹性能增加,破坏时释放的能量增大,更容易诱发动力冲击相关灾害.研究结果为冲击矿压地区区段煤柱尺寸的合理选择提供参考. |
|---|---|
| AbstractList | TD315; 煤体是一种包含孔隙结构和矿物成分的多孔材料,具有明显的各向异性和尺寸效应.为研究煤体各向异性及尺寸效应对破坏特征的影响,本文提出了一种基于CT扫描、核磁共振和X衍射等技术手段的煤样内部孔隙、矿物成分表征和三维重构模拟方法.在此基础上,反演实验室单轴压缩获得了三维重构模型煤基质和矿物成分的模拟参数,进一步模拟分析了不同宽高比煤体的强度损伤特征.模拟结果表明:①在加载过程中,塑性区首先在孔隙和矿物成分周边逐渐向外扩展连通.在空间分布上,塑性区前期由加载端垂直向内部扩展,后期转变为由四周水平向内部扩展,最终模型破坏的非塑性区形成"双圆台结构体".②随着宽高比的增加,煤样的抗压强度(p)、达到屈服强度时的应变(ζ)以及弹性模量(K)均会增加,其中ζ和K呈线性增加,而p增幅逐渐减小.③在煤样单轴加载过程中总能量和弹性能呈指数增加,耗散能呈线性增加.随着宽高比增加,煤体内积聚的弹性能增加,破坏时释放的能量增大,更容易诱发动力冲击相关灾害.研究结果为冲击矿压地区区段煤柱尺寸的合理选择提供参考. |
| Abstract_FL | Coal is a porous material containing pore structures and mineral components,exhibiting pro-nounced anisotropy and size effects.In order to investigate the influence of coal anisotropy and size effects on its failure characteristics,this paper proposes a simulation method for characterizing and re-constructing three-dimensionally the internal pores and mineral components of coal samples based on CT scanning,nuclear magnetic resonance,and X-ray diffraction.Specifically,we obtained simulation param-eters of three-dimensional reconstruction models of coal matrix and mineral components through inverse laboratory uniaxial compression experiments,while simulated and analyzed the strength damage charac-teristics of coal bodies with different aspect ratios.The simulation results show that:①During the load-ing process,the plastic zone first gradually expands and connects outward around the pores and mineral components.In terms of spatial distribution,the plastic zone expands vertically from the loading end to the interior in the early stage,and in the later stage,it expands horizontally from the surroundings to the interior.After the model is damaged,a"double truncated cone structure"is formed in the non-plastic zone.② The increase of aspect ratio leads to an increase in the compressive strength(p)of coal sam-ples,the strain(ζ)at yielding strength,and the elastic modulus(K),among which ζ and K increase lin-early,while the margin of increase in p gradually decreases.③ The total energy and elastic energy of coal sample loading increase exponentially,while the dissipated energy increases linearly.The increase of aspect ratio leads to an increase both in the accumulated elastic energy in the coal body and in the released energy during failure,which easily induce dynamic impact-related disasters.This study provide references for the reasonable selection of coal pillar size in impact mine pressure area. |
| Author | 张村 方尚鑫 王永乐 王方田 白庆升 贾胜 |
| AuthorAffiliation | 中国矿业大学(北京)共伴生能源精准开采北京市重点实验室,北京 100083;中国矿业大学(北京)厚煤层绿色智能开采教育部工程研究中心,北京 100083%中国矿业大学(北京)共伴生能源精准开采北京市重点实验室,北京 100083%中国矿业大学矿业工程学院,江苏徐州 221116%中国地质大学(北京)地质安全研究院,北京 100083 |
| AuthorAffiliation_xml | – name: 中国矿业大学(北京)共伴生能源精准开采北京市重点实验室,北京 100083;中国矿业大学(北京)厚煤层绿色智能开采教育部工程研究中心,北京 100083%中国矿业大学(北京)共伴生能源精准开采北京市重点实验室,北京 100083%中国矿业大学矿业工程学院,江苏徐州 221116%中国地质大学(北京)地质安全研究院,北京 100083 |
| Author_FL | WANG Fangtian ZHANG Cun BAI Qingsheng FANG Shangxin JIA Sheng WANG Yongle |
| Author_FL_xml | – sequence: 1 fullname: ZHANG Cun – sequence: 2 fullname: FANG Shangxin – sequence: 3 fullname: JIA Sheng – sequence: 4 fullname: WANG Yongle – sequence: 5 fullname: WANG Fangtian – sequence: 6 fullname: BAI Qingsheng |
| Author_xml | – sequence: 1 fullname: 张村 – sequence: 2 fullname: 方尚鑫 – sequence: 3 fullname: 贾胜 – sequence: 4 fullname: 王永乐 – sequence: 5 fullname: 王方田 – sequence: 6 fullname: 白庆升 |
| BookMark | eNotjz1PwlAYRu-AiYj8Bzen1vd-9t7REL8IiQvO5LZQA2hJrEYcTTAKERlEBwdxYHPQwQEr-Gt6W_0XYnQ6yTOcJ2cJZYJWUENoBYONlQCx1rC9oFm3G4fhsU2AMBuoDRgyKEtACYtgRRdRPgzrLnBMHeYImUVFM4ri6KZQTrrPyWCQPnTiSTf9ePu-7CePnfRiHM9uTe_pazZL-qN4Ok6mQ3N9n3bfzee5GfTMa2ReJsndlYmGy2jB1wdhLf_PHNrb3CgXtq3S7tZOYb1khRgIWNJxfKqqwqsqxTxGGSOkJjGTILz57riUSw5aE8IJl1XBiSddobUDSkruezSHVv-8pzrwdbBfabROjoL5Y6V51my33d92oPNy-gMKaGu_ |
| 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.2024.03.010 |
| 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 | Damage evolution characteristics of 3D-reconstructed coal during loading and its size effects based on CT scanning |
| EndPage | 425 |
| ExternalDocumentID | kykxxb202403010 |
| GrantInformation_xml | – fundername: (国家重点研发计划); (国家自然科学基金); (中国博士后基金) funderid: (国家重点研发计划); (国家自然科学基金); (中国博士后基金) |
| 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-s1020-877f39d6cd994c434422e814806c39d7b35850aa225258d652c8b6aa709885fc3 |
| ISSN | 2096-2193 |
| IngestDate | Thu May 29 04:07:01 EDT 2025 |
| IsPeerReviewed | false |
| IsScholarly | true |
| Issue | 3 |
| Keywords | mineral composition 三维重构 矿物成分 尺寸效应 pore structure CT scan size effect CT扫描 孔隙结构 three-dimensional reconstruction |
| Language | Chinese |
| LinkModel | OpenURL |
| MergedId | FETCHMERGED-LOGICAL-s1020-877f39d6cd994c434422e814806c39d7b35850aa225258d652c8b6aa709885fc3 |
| PageCount | 13 |
| ParticipantIDs | wanfang_journals_kykxxb202403010 |
| PublicationCentury | 2000 |
| PublicationDate | 2024-06-01 |
| PublicationDateYYYYMMDD | 2024-06-01 |
| PublicationDate_xml | – month: 06 year: 2024 text: 2024-06-01 day: 01 |
| PublicationDecade | 2020 |
| PublicationTitle | 矿业科学学报 |
| PublicationYear | 2024 |
| Publisher | 中国矿业大学(北京)共伴生能源精准开采北京市重点实验室,北京 100083 中国矿业大学(北京)厚煤层绿色智能开采教育部工程研究中心,北京 100083%中国矿业大学(北京)共伴生能源精准开采北京市重点实验室,北京 100083%中国矿业大学矿业工程学院,江苏徐州 221116%中国地质大学(北京)地质安全研究院,北京 100083 |
| Publisher_xml | – name: 中国矿业大学(北京)共伴生能源精准开采北京市重点实验室,北京 100083 – name: 中国矿业大学(北京)厚煤层绿色智能开采教育部工程研究中心,北京 100083%中国矿业大学(北京)共伴生能源精准开采北京市重点实验室,北京 100083%中国矿业大学矿业工程学院,江苏徐州 221116%中国地质大学(北京)地质安全研究院,北京 100083 |
| SSID | ssib051374768 ssib043749106 ssj0002857281 ssib029826694 ssib041261948 ssib036434758 |
| Score | 2.3856268 |
| Snippet | TD315; 煤体是一种包含孔隙结构和矿物成分的多孔材料,具有明显的各向异性和尺寸效应.为研究煤体各向异性及尺寸效应对破坏特征的影响,本文提出了一种基于CT扫描、核磁共振... |
| SourceID | wanfang |
| SourceType | Aggregation Database |
| StartPage | 413 |
| Title | 基于CT扫描的三维重构煤体加载损伤演化特征及尺寸效应 |
| URI | https://d.wanfangdata.com.cn/periodical/kykxxb202403010 |
| 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/eLvHCXMwnV07b9RAELZCaGgQCBBvRYit0AV7vWvvlmvHpygF1UVKF9m-M5CIQyKJFNIhBUEiQgoCBQWhSEcBBUU4En7N-QL_gpmxLzYExEO6s9az49mZ-fY8O3u7tmVdh0RHy1glDYzekKAotxF3YruRpdyWSSozL6Onfd7yJqfF1IycGRm9Vlu1tLSYjKcrv9xX8j-oAg1wxV2y_4DsoVAgQBnwhSMgDMe_wphFkukmCwyLBB5VFLZY5DGlmQmo0MRP5DMNlYK4FNYCJQhYABTNlM_UBDLriHjgVDJTME8w7WIjyjBjs0ghJSBmuARaRp6QmD0saEHMUPBIjmaBRkoAkh2qaqIopNikNTTURJWwdahVVGVY8ULi4ZiZ9Ae2Zqk_2AIUA0SSaSaY8WoFj7SVw55EIkNSHxoBrZ2qxkNFSxVtkqtRqAkqFoVeAv2hoFymw6oG7AOzyM1ojSLt4Hq7PpHCRbXgi7p-aQPoitgF5M2j5hEAYOGhVVwNPeuXWJuQcdIc0AqcEomA8AMYEBvSuEALfWoT6pyMkYS6V_pG2cN-4P-iFeQBUbzWV3w8LfxmIuw3UGUMXlhQQHkeHhV1w6GxeBV7OGS2DQhmbj1Q6tr9wK0FPVHsJi7HT6LYyH4kNGOqTLE57c7fHZ-7t4ArmbmgRwyXK5t_fPD5_MP55eUEeTBtt49ZxzlEbrs2bQIxg2vIj2t7t10YYQu_-qdfODhFUKX8woWbU21lgXSAMEy552iyWfqc3m186INyASAacPM36tOWv24Wd2_XRqetU9bJMq0cM8U94rQ1snLnjDWVb_f6vedha7D2brC5efB6tb-7dvD547cnG4M3qwePd_r7L_L1t1_39wcb2_29ncHeVv7s1cHap_zLo3xzPf_Qy9_vDl4-zXtbZ63pZtQKJxvlu1MaCw7OCCnfz1zd9tK21iIFnwjOO8oRyvZSoPuJK5W04xjCOZeq7UmeqsSLY9_WSsksdc9Zo9373c55sD3ObD_DR_F1PBH7IsbLncRpZ_htxxessdL22fLeuDD7E3YX_8xyyTpR_SgvW6OLD5Y6V2C8v5hcJcC_Awtjvko |
| 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%9F%BA%E4%BA%8ECT%E6%89%AB%E6%8F%8F%E7%9A%84%E4%B8%89%E7%BB%B4%E9%87%8D%E6%9E%84%E7%85%A4%E4%BD%93%E5%8A%A0%E8%BD%BD%E6%8D%9F%E4%BC%A4%E6%BC%94%E5%8C%96%E7%89%B9%E5%BE%81%E5%8F%8A%E5%B0%BA%E5%AF%B8%E6%95%88%E5%BA%94&rft.jtitle=%E7%9F%BF%E4%B8%9A%E7%A7%91%E5%AD%A6%E5%AD%A6%E6%8A%A5&rft.au=%E5%BC%A0%E6%9D%91&rft.au=%E6%96%B9%E5%B0%9A%E9%91%AB&rft.au=%E8%B4%BE%E8%83%9C&rft.au=%E7%8E%8B%E6%B0%B8%E4%B9%90&rft.date=2024-06-01&rft.pub=%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%E5%85%B1%E4%BC%B4%E7%94%9F%E8%83%BD%E6%BA%90%E7%B2%BE%E5%87%86%E5%BC%80%E9%87%87%E5%8C%97%E4%BA%AC%E5%B8%82%E9%87%8D%E7%82%B9%E5%AE%9E%E9%AA%8C%E5%AE%A4%2C%E5%8C%97%E4%BA%AC+100083&rft.issn=2096-2193&rft.volume=9&rft.issue=3&rft.spage=413&rft.epage=425&rft_id=info:doi/10.19606%2Fj.cnki.jmst.2024.03.010&rft.externalDocID=kykxxb202403010 |
| 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 |