Advance Search
GUAN Cheng, XUE Honglai, DONG Lihui. Experimental study on transient charge signals on raw coalsurface under uniaxial loading[J]. COAL SCIENCE AND TECHNOLOGY, 2018, (3).
Citation: GUAN Cheng, XUE Honglai, DONG Lihui. Experimental study on transient charge signals on raw coalsurface under uniaxial loading[J]. COAL SCIENCE AND TECHNOLOGY, 2018, (3).

Experimental study on transient charge signals on raw coalsurface under uniaxial loading

More Information
  • Available Online: April 02, 2023
  • Published Date: March 24, 2018
  • Based on the experimental analysis of the uniaxial compression process of raw coal samples, the change of transient charge on sample surface is studied and the relationship betweene transient charge and loading stress is discussed.The result show that during the main rupture stage of coal samples,the maximum of the transient charge signals appears before the stress peak,and changes suddenly with the abrupt drop of the stress.At the early stage of destruction,the internal friction is the main reason for the charge generation and accumulation.While at the middle and late stages of destruction,a large number of cracks are formed and propagated,which cause the change of charge signals.According to the variation law of the transient charge on the surface of the coal body,it can reflect the damage of the coal body,and the monitoring of the surface charge can provide an important reference for the prediction of coal and rock dynamic disasters.
  • Related Articles

    [1]ZHANG Xin, LIU Zegong, ZHANG Jianyu, FU Shigui, QIAO Guodong, YANG Shuai, CHANG Shuai. Study on propagation law of cracking and permeability enhancement caused by blasting in deep high-gas coal seams[J]. COAL SCIENCE AND TECHNOLOGY, 2024, 52(7): 89-100. DOI: 10.12438/cst.2023-1622
    [2]YANG Shuai, LIU Zegong, ZHANG Jianyu, FU Shigui, QIAO Guodong, ZHANG Xin. Experimental study on the effect of the angle of the shaped charge tube on the penetration enhancement of coal seam blasting[J]. COAL SCIENCE AND TECHNOLOGY, 2024, 52(3): 129-138. DOI: 10.12438/cst.2023-0714
    [3]WANG Kaifei, ZHANG Changsuo, HAO Bingyuan, ZHANG Shengli. Study on initiation and propagation mechanism of internal cracks caused by dynamic and static action of shaped charge blasting under in-situ stress[J]. COAL SCIENCE AND TECHNOLOGY, 2023, 51(S1): 50-64. DOI: 10.13199/j.cnki.cst.2022-1042
    [4]ZHAO Pengxiang, LIU Lidong, LI Shugang, XU Peiyun, LI Gang, WEI Zongyong, JIA Yongyong. Dip angle effect of coal seam on crack propagation rule of compacted area at fully-mechanized rise mining face[J]. COAL SCIENCE AND TECHNOLOGY, 2021, 49(11): 65-72.
    [5]QIN Nan ZHANG Zuoliang FENG Xuezhi LIU Yaqi CUI Lizhuang WANG Yongyan, . Study on uniaxial strength and crack propagation law of cracked similar rock after creep[J]. COAL SCIENCE AND TECHNOLOGY, 2020, 48(12).
    [6]WANG Lei, LIANG Weiguo. Experimental study on crack propagation of coal-rock mass under supercritical CO2 fracturing[J]. COAL SCIENCE AND TECHNOLOGY, 2019, (2).
    [7]SHEN Chunming, LIN Baiquan, LIU Ting, WANG Weihua, YANG Xin. Analysis on particle flow of crack propagation in slotting coal and rock sample[J]. COAL SCIENCE AND TECHNOLOGY, 2018, (7).
    [8]XU Xiaoyun, ZHANG Mingming. Study on T stress affected to crack fracturing and extension mechanism ofhalf disc rock specimen[J]. COAL SCIENCE AND TECHNOLOGY, 2018, (3).
    [9]Wang Guoyan Yu Guangming Gao Liyan Li Gang, . Study on influence of initial crack dip angle on damage-fractured characteristics of rock[J]. COAL SCIENCE AND TECHNOLOGY, 2017, (6).

Catalog

    Article views (58) PDF downloads (240) Cited by()
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return