Volume 48 Issue 3
Jun.  2020
Turn off MathJax
Article Contents
Abstract
References
Related Articles
YU Jie, LIU Xiaohui, HAO Qijun. Acoustic emission characteristics and damage evolution of coal-rock under different confining pressures[J]. COAL GEOLOGY & EXPLORATION, 2020, 48(3): 128-136. DOI: 10.3969/j.issn.1001-1986.2020.03.019
Citation: YU Jie, LIU Xiaohui, HAO Qijun. Acoustic emission characteristics and damage evolution of coal-rock under different confining pressures[J]. COAL GEOLOGY & EXPLORATION, 2020, 48(3): 128-136. DOI: 10.3969/j.issn.1001-1986.2020.03.019
shu

Acoustic emission characteristics and damage evolution of coal-rock under different confining pressures

  • 1. Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University, Chengdu 610039, China;

  • 2. State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu 610065, China

Funds: 

Key Scientific Research Fund of Xihua University(Z17113)

More Information
  • Received Date: November 06, 2019
  • Revised Date: April 08, 2020
  • Published Date: June 24, 2020
    Graphical Abstract
    • Abstract
  • Using PCI-2 acoustic emission(AE) system, the AE experiments of different confining pressures (0, 8, 16, 5 MPa) were carried out in Baijiao coal mine in Furong, Sichuan Province, in order to reveal the change rule of ringing count rate, the temporal and spatial distribution of AE, b value of AE and damage characteristics of damaged coal-rock under different confining pressures, and to provide a theoretical basis for prediction of coal-rock damage. The results show that the AE phenomenon can reflect the crack propagation of coal-rock and the confining pressure can restrain the damage of coal-rock. With the increase of confining pressure, the calmer period of ringing count rate was longer. The frequency range of ringing count rate is different under single and triaxial condition. In the uniaxial state, the AE registration points are uniformly distributed in the coal-rock, while in the triaxial state, they are centrally distributed in the failure section. With the increase of confining pressure, the fluctuation of pre-peak AE value b increases, and the change of value b can be used to predict the failure of coal-rock. Based on the cumulative ringing count and the failure stress of coal-rock, the damage failure model of coal-rock was established, and the precursor stress point of effective failure of coal-rock could be predicted by combining the AE ringing count rate, spatial and temporal distribution, value b and damage variables. The results will lay a foundation for the monitoring and analysis of coal-rock damage.
    • FullText(HTML)
    • References (30)
  • [1]
    聂百胜,何学秋,王恩元,等. 煤与瓦斯突出预测技术研究现状及发展趋势[J]. 中国安全科学学报,2003,13(6):40-43.

    NIE Baisheng,HE Xueqiu,WANG Enyuan,et al. Present situation and progress trend of prediction technology of coal and gas outburst[J]. China Safety Science Journal,2003,13(6):40-43.
    [2]
    MILLER R K,MCLNTIRE P. Acoustic emission testing:Nondestructive testing handbook(3rd edition)[M]. Columbus DH,USA:American Society for Nondestructive Testing,2005.
    [3]
    LOCKNER D. The role of acoustic emission in the study of rock fracture[J]. International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstract,1993,30(7):883-899.
    [4]
    WEN Zhijie,WANG Xiao,CHEN Lianjun,et al. Size effect on acoustic emission characteristics of coal-rock damage evolution[J]. Advances in Materials Science and Engineering,2017,2017:1-8.
    [5]
    KONG Xiangguo,WANG Enyuan,HU Shaobin,et al. Fractal characteristics and acoustic emission of coal containing methane in triaxial compression failure[J]. Journal of Applied Geophysics,2016,124:139-147.
    [6]
    贾炳,魏建平,温志辉,等. 基于层理影响的煤样加载过程声发射差异性分析[J]. 煤田地质与勘探,2016,44(4):35-39.

    JIA Bing,WEI Jianping,WEN Zhihui,et al. The analysis of the differences of acoustic emission during loading process based on the influence of bedding[J]. Coal Geology & Exploration,2016,44(4):35-39.
    [7]
    ZHANG Chuanda,LIANG Weiguo,LI Zhigang,et al. Observations of acoustic emission of three salt rocks under uniaxial compression[J]. International Journal of Rock Mechanics and Mining Sciences,2015,77:19-26.
    [8]
    宋战平,刘京,谢强,等. 石灰岩声发射特性及其演化规律试验研究[J]. 煤田地质与勘探,2013,41(4):61-65.

    SONG Zhanping,LIU Jing,XIE Qiang,et al. Experimental study on acoustic emission characteristics and evolution regularities of limestone under different stress condition[J]. Coal Geology & Exploration,2013,41(4):61-65.
    [9]
    LIU Xiaohui,ZHAO Xiaoping,LIU Jianfeng. A study on the acoustic emission characteristics of the coal rock on different bedding direction[J]. Computer Modelling & New Technologies,2014,18(5):308-313.
    [10]
    苏承东,高保彬,南华,等. 不同应力路径下煤样变形破坏过程声发射特征的试验研究[J]. 岩石力学与工程学报,2009,28(4):757-766.

    SU Chengdong,GAO Baobin,NAN Hua,et al. Experimental study on acoustic emission characteristics during deformation and failure processes of coal samples under different stress paths[J]. Chinese Journal of Rock Mechanics and Engineering,2009,28(4):757-766.
    [11]
    苏承东,翟新献,李宝富,等. 砂岩单三轴压缩过程中声发射特征的试验研究[J]. 采矿与安全工程学报,2011,28(2):225-230.

    SU Chengdong,ZHAI Xinxian,LI Baofu,et al. Experimental study of the characteristics of acoustic emission for sandstone specimens under uniaxial and triaxial compression tests[J]. Journal of Mining and Safety Engineering,2011,28(2):225-230.
    [12]
    左建平,裴建良,刘建锋,等. 煤岩体破裂过程中声发射行为及时空演化机制[J]. 岩石力学与工程学报,2011,30(8):1564-1570.

    ZUO Jianping,PEI Jianliang,LIU Jianfeng,et al. Investigation on acoustic emission behavior and its time-space evolution mechanism in failure process of coal-rock combined body[J]. Chinese Journal of Rock Mechanics and Engineering,2011,30(8):1564-1570.
    [13]
    高保彬,李回贵,李化敏,等. 含水煤样破裂过程中的声发射及分形特性研究[J]. 采矿与安全工程学报,2015,32(4):665-670.

    GAO Baobin,LI Huigui,LI Huamin,et al. Acoustic emission and fractal characteristics of saturated coal samples in the failure process[J]. Journal of Mining and Safety Engineering,2015,32(4):665-670.
    [14]
    GUTENBERG B,RICHTER C F. Frequency of earthquakes in California[J]. Bulletin of the Seismological Society of America,1944,34(4):185-188.
    [15]
    张黎明,马绍琼,任明远,等. 不同围压下岩石破坏过程的声发射频率及b值特征[J]. 岩石力学与工程学报,2015,34(10):2057-2063.

    ZHANG Liming,MA Shaoqiong,REN Mingyuan,et al. Acoustic emission frequency and b value characteristics in rock failure process under various confining pressures[J]. Chinese Journal of Rock Mechanics and Engineering,2015,34(10):2057-2063.
    [16]
    赵小平,陈淑芬. 基于声发射振幅分布的裂隙岩体破坏演化过程[J]. 岩石力学与工程学报,2015,34(增1):3012-3017.

    ZHAO Xiaoping,CHEN Shufen. Failure evolution process of fractured rock-mass based on amplitude of acoustic emission[J]. Chinese Journal of Rock Mechanics and Engineering,2015,34(S1):3012-3017.
    [17]
    姚旭龙,张艳博,刘祥鑫,等. 岩石破裂声发射关键特征信号优选方法[J]. 岩土力学,2018,39(1):375-384.

    YAO Xulong,ZHANG Yanbo,LIU Xiangxin,et al. Optimization method for key characteristic signal of acoustic emission in rock fracture[J]. Rock and Soil Mechanics,2018,39(1):375-384.
    [18]
    张朝鹏,张茹,张泽天,等. 单轴受压煤岩声发射特征的层理效应试验研究[J]. 岩石力学与工程学报,2015,34(4):770-778.

    ZHANG Zhaopeng,ZHANG Ru,ZHANG Zetian,et al. Experimental research on effects of bedding plane on coal acoustic emission under uniaxial compression[J]. Chinese Journal of Rock Mechanics and Engineering,2015,34(4):770-778.
    [19]
    刘倩颖,张茹,高明忠,等. 煤卸荷过程中声发射特征及综合破坏前兆分析[J]. 四川大学学报(工程科学版),2016,48(增刊2):67-74.

    LIU Qianying,ZHANG Ru,GAO Mingzhong,et al. Acoustic emission characteristics and comprehensive failure precursors of coal under unloading conditions[J]. Journal of Sichuan University(Engineering Science Edition),2016,48(S2):67-74.
    [20]
    邓飞,罗福友,罗福龙,等. 砂岩单轴压缩变形规律及声发射特性[J]. 有色金属科学与工程,2014,5(1):77-81.

    DENG Fei,LUO Fuyou,LUO Fulong,et al. Deformation rules and acoustic emission characteristics of sandstone uniaxial compression[J]. Nonferrous Metals Science and Engineering,2014,5(1):77-81.
    [21]
    刘保县,黄敬林,王泽云,等. 单轴压缩煤岩损伤演化及声发射特性研究[J]. 岩石力学与工程学报,2009,28(增刊1):3234-3238.

    LIU Baoxian,HUANG Jinglin,WANG Zeyun,et al. Study on damage evolution and acoustic emission character of coal rock under uniaxial compression[J]. Chinese Journal of Rock Mechanics and Engineering,2009,28(S1):3234-3238.
    [22]
    孙雪,李二兵,段建立,等. 北山花岗岩三轴压缩下声发射特征及损伤演化规律研究[J]. 岩石力学与工程学报,2018,37(增刊2):4234-4244.

    SUN Xue,LI Erbing,DUAN Jianli,et al. Study on acoustic emission characteristics and damage evolution law of Beishan granite under triaxial compression[J]. Chinese Journal of Rock Mechanics and Engineering,2018,37(S2):4234-4244.
    [23]
    赵洪宝,尹光志. 含瓦斯煤声发射特性试验及损伤方程研究[J]. 岩土力学,2011,32(3):667-671.

    ZHAO Hongbao,YIN Guangzhi. Study of acoustic emission characteristics and damage equation of coal containing gas[J]. Rock and Soil Mechanics,2011,32(3):667-671.
    [24]
    刘晓辉,张茹,刘建锋. 不同应变率下煤岩冲击动力试验研究[J]. 煤炭学报,2012,37(9):1528-1534.

    LIU Xiaohui,ZHANG Ru,LIU Jianfeng. Dynamic test study of coal rock under different strain rates[J]. Journal of China Coal Society,2012,37(9):1528-1534.
    [25]
    刘晓辉,余洁,康家辉,等. 不同围压下煤岩强度及变形特征研究[J]. 地下空间与工程学报,2019,15(5):1341-1352.

    LIU Xiaohui,YU Jie,KANG Jiahui,et al. Study on strength and deformation characteristics of coal-rock under different confining pressures[J]. Chinese Journal of Underground Space and Engineering,2019,15(5):1341-1352.
    [26]
    FAIRHURST C E,HUDSON J A. Draft ISRM suggested method for the complete stress-strain curve for intact rock in uniaxial compression[J]. International Journal of Rock Mechanics and Mining Sciences,1999,36(3):281-289.
    [27]
    李全林,于涛,郝柏林,等. 地震频度[M]. 北京:地震出版社,1979.

    LI Quanlin,YU Tao,HAO Bailin,et al. Time and space scaring of frequency and magnitude of earthquake[M]. Beijing:Seismological Press,1979.
    [28]
    曾正文,马瑾,刘力强,等. 岩石破裂扩展过程中的声发射b值动态特征及意义[J]. 地震地质,1995,17(1):7-12.

    ZENG Zhengwen,MA Jin,LIU Liqiang,et al. AE b-value dynamic features during rockmass fracturing and their significances[J]. Seismology and Geology,1995,17(1):7-12.
    [29]
    郑确,刘财,田有,等. 地震活动性中震级-频度关系研究进展与再认识[J]. 地球物理学进展,2018,33(5):1879-1889.

    ZHENG Que,LIU Cai,TIAN You,et al. Review and further understanding of frequency-magnitude distribution in seismicity[J]. Progress in Geophysics,2018,33(5):1879-1889.
    [30]
    黄明利,唐春安,朱万成. 岩石破裂过程的数值模拟研究[J]. 岩石力学与工程学报,2000,19(4):468-471.

    HUANG Mingli,TANG Chun'an,ZHU Wancheng. Numerical simulation on failure process of rock[J]. Chinese Journal of Rock Mechanics and Engineering,2000,19(4):468-471.
    • Related Articles

  • Related Articles

    [1]ZHAO Hongbao, ZHANG Bo, ZHANG Chi, JI Dongliang. Mining-induced fault slip: Assessment model and method for determining fault instability ranges[J]. COAL GEOLOGY & EXPLORATION, 2025, 53(3): 23-33. DOI: 10.12363/issn.1001-1986.24.08.0558
    [2]LI Huakun, ZHENG Liugen, CHEN Yongchun, LI Bing, TAO Pengfei, LI Hao. Exploring the pore structure of reconstructed soils and its effects on water and salt transport based on CT scanning[J]. COAL GEOLOGY & EXPLORATION, 2024, 52(4): 120-127. DOI: 10.12363/issn.1001-1986.23.09.0586
    [3]QI Yueming, ZHOU Pei, ZHOU Lai, JIANG Dan, YANG Yuqing, LIU Yanzhuo. Sulphate contamination in an abandoned coal mine in light of mining effects[J]. COAL GEOLOGY & EXPLORATION, 2024, 52(4): 89-100. DOI: 10.12363/issn.1001-1986.23.11.0783
    [4]SUN Wenbin, HAO Jianbang, DAI Xianzheng, KONG Lingjun. Response mechanism characteristics of mining-induced fault activation[J]. COAL GEOLOGY & EXPLORATION, 2024, 52(4): 12-20. DOI: 10.12363/issn.1001-1986.23.09.0525
    [5]XU Bin, XIANG Fang, LI Shuxia. Distribution characteristics and paleo-climatic significance of continental climate-sensitive sediments in the Late Cretaceous in China[J]. COAL GEOLOGY & EXPLORATION, 2021, 49(5): 190-199. DOI: 10.3969/j.issn.1001-1986.2021.05.021
    [6]CHENG Bin, ZHAO Long, LI Zhiliang. Permeability distribution law of protected coal seam in mining-affected zone[J]. COAL GEOLOGY & EXPLORATION, 2017, 45(3): 77-81,86. DOI: 10.3969/j.issn.1001-1986.2017.03.014
    [7]WANG Hao, QIAO Wei, CHAI Rui. Overburden rock permeability variation and vertical zoning characteristics under the influence of coal mining[J]. COAL GEOLOGY & EXPLORATION, 2015, 43(3): 51-55. DOI: 10.3969/j.issn.1001-1986.2015.03.010
    [8]FANG Tengjiao, LIAO Xuedong, HE Lubin, LI Jingjing. Failure mechanism and control of soft rock roadway under mining disturbance[J]. COAL GEOLOGY & EXPLORATION, 2014, 42(2): 67-70. DOI: 10.3969/j.issn.1001-1986.2014.02.014
    [9]LI Ming-jian, LU Meng-sheng, GUO Peng-shan. Study of environmental geology effect of mining in Nansihu Area[J]. COAL GEOLOGY & EXPLORATION, 2001, 29(6): 41-43.
    [10]Liu Ruixin. THE EFFECT OF MINING DISTURBANCE ON WATER INFLOW FROM THE RED BEDS INTO COAL MINE[J]. COAL GEOLOGY & EXPLORATION, 1992, 20(3): 37-39.

  • Cited by

    Periodical cited type(14)

    1. 吴见，张松航，贾腾飞，晁巍巍，彭文春，李世龙. 深部煤层钻孔保压取心流程分析及含气量测定方法. 石油实验地质. 2025(01): 163-172 .
    2. 何文渊，黄文松，崔泽宏，刘玲莉，段利江，赵一波. 澳大利亚苏拉特区块低煤阶煤层气有利区预测与高效开发策略. 石油与天然气地质. 2025(01): 31-46 .
    3. 申有义，王凯峰，唐书恒，张松航，郗兆栋，杨晓东. 沁水盆地榆社—武乡区块二叠系煤系页岩储层地质建模及“甜点”预测. 岩性油气藏. 2024(04): 98-108 .
    4. 刘同庆，宋玉龙，牟义，黄涛，汝亮，周绍辉，曹峰，孟国强. 基于Petrel的煤顶板三维地质模型及地应力模型构建. 煤矿安全. 2023(05): 100-105 .
    5. 李勇，陈祖国，徐建军，周加佳，苏善博，张震. 寺河井田3号煤层含气量三维建模. 科技和产业. 2023(22): 275-280 .
    6. 姜在炳，杨建超，李勇，庞涛. 基于三维地质建模技术的煤层气抽采效果评价——以晋城寺河煤矿为例. 煤田地质与勘探. 2022(02): 55-64 . 本站查看
    7. 高连平，宋培娟，王庄. 基于三维激光特征二次匹配的室外景观建模方法. 应用激光. 2022(03): 147-153 .
    8. 郭广山，郭建宏，孙立春，刘丽芳，田永净. 基于随机森林算法的煤层含气量三维精细建模. 中国海上油气. 2022(04): 156-163 .
    9. 徐冬生. 邢台市任泽区地热资源开发利用研究. 中国煤炭地质. 2022(S2): 66-70 .
    10. 韩明辉，杨雪，胡海洋. 多薄煤层气藏三维地质建模技术及其应用——以黔西地区攀枝花煤矿为例. 天然气技术与经济. 2022(06): 1-8 .
    11. 刘冰，张松航，唐书恒，王鹏飞，翟佳宇，纪朝琪. 无越流补给含水层对煤层气排采影响的数值模拟. 煤田地质与勘探. 2021(02): 43-53 . 本站查看
    12. 宣涛，王文升，刘灵童，李建荣，秦鹏. 不连续、薄互层煤层气地质建模技术——以澳大利亚苏拉特盆地为例. 中国煤炭地质. 2021(06): 31-36+68 .
    13. 熊幸，韩文龙，赵石虎. 基于灰色关联的沁南柿庄地区含气量主控因素分析. 煤炭技术. 2021(07): 93-97 .
    14. 刘同庆. 煤质工业分析测井解释及三维建模研究. 煤炭技术. 2021(09): 71-75 .

    Other cited types(2)

Catalog

    Get Citation
    PDF
    XML

    Article Metrics

    Article views (179) PDF downloads (30) Cited by(16)
    Related

    Copyright of website design © Editorial Office of Coal Geology & Exploration 陕ICP备05001372号-6 陕公网安备 61019002002193号

    Address: Editorial Office of Coal Geology & Exploration, No.82 Jinye 1st Rd, High-Tech Zone, Xi'an City, Shaanxi, China

    Tel: 029-81778075 E-mail: ccrimtdzykt@vip.163.com

    Supported by: Beijing Renhe Information Technology Co., Ltd.  Baidu Analytics

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return