Volume 50 Issue 5
May  2024
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HE Xinyao, CHANG Yuan, REN Fuqiang. Experimental study on the mechanical and acoustic emission features of frozen single fractured sandstone under drop hammer impact[J]. Journal of Mine Automation,2024,50(5):135-141, 156.  doi: 10.13272/j.issn.1671-251x.2023110021
Citation: HE Xinyao, CHANG Yuan, REN Fuqiang. Experimental study on the mechanical and acoustic emission features of frozen single fractured sandstone under drop hammer impact[J]. Journal of Mine Automation,2024,50(5):135-141, 156.  doi: 10.13272/j.issn.1671-251x.2023110021

Experimental study on the mechanical and acoustic emission features of frozen single fractured sandstone under drop hammer impact

doi: 10.13272/j.issn.1671-251x.2023110021
  • Received Date: 2023-11-07
  • Rev Recd Date: 2024-05-31
  • Available Online: 2024-06-13
  • Mining rock masses in high-altitude cold regions can experience instability due to low temperature environments and dynamic load disturbances. Existing research mostly focuses on the static features of fractured sandstone under different freezing temperatures. Considering the influence of engineering excavation, further research is needed to investigate the mechanical and acoustic emission features of frozen fractured sandstone under dynamic loads. Therefore, a drop hammer impact test is conducted on frozen single fractured sandstone. The mechanical and acoustic emission features of frozen single fractured sandstone are analyzed using acoustic emission monitoring technology. The experimental results show the following points. ① An increase in the inclination angle of the crack will cause an increase in the rebound amplitude of the strain time curve before the peak strain. The crack will change from being distributed on both sides of the crack to being distributed on both ends of the crack. After the drop height of the hammer increases, the strain time curve shows a significant bimodal rebound before the strain peak, and the damage is significantly intensified. A decrease in freezing temperature will lead to an earlier onset of strain peak and an increase in strain peak. ② The propagation of microcracks has stage features, corresponding to strong microcracking activity at the peak strain and accompanied by intense energy release. ③ The activity of microcracking activity increases first and then decreases with the increase of inclination angle of the crack. The drop height of the hammer increases, and the intensity of microcracking activity gradually decreases. The decrease in freezing temperature leads to an earlier occurrence of microcracking activity. ④ Micro cracks are mainly tensile cracks, corresponding to macroscopic failure modes. ⑤ The sharp increase in entropy value is a precursor to sandstone failure and can be used as a warning indicator for dynamic instability of sandstone.

     

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  • [1]
    郝天轩,徐新革,赵立桢. 煤岩裂隙图像识别方法研究[J]. 工矿自动化,2023,49(10):68-74.

    HAO Tianxuan,XU Xinge,ZHAO Lizhen. Research on image recognition method of coal rock fractures[J]. Journal of Mine Automation,2023,49(10):68-74.
    [2]
    陈宇龙,张科,孙欢. 冻融循环作用下岩石表面裂纹扩展过程细观研究[J]. 土木工程学报,2019,52(增刊1):1-7.

    CHEN Yulong,ZHANG Ke,SUN Huan. Meso-research on the development of rock surface crack under freeze-thaw cycles[J]. China Civil Engineering Journal,2019,52(S1):1-7.
    [3]
    朱卫兵,王晓振,谢建林,等. 矿山采动覆岩内部岩移原位监测技术进展及应用[J]. 工矿自动化,2023,49(9):1-12.

    ZHU Weibing,WANG Xiaozhen,XIE Jianlin,et al. Advancements and applications:In-situ monitoring technology for overburden movement in mining[J]. Journal of Mine Automation,2023,49(9):1-12.
    [4]
    刘学伟,王赛,刘滨,等. 不同注浆材料填充双裂隙类岩石试样力学特性研究[J]. 岩石力学与工程学报,2024,43(3):623-638.

    LIU Xuewei,WANG Sai,LIU Bin,et al. Effect of filling grouting material on mechanical properties and mechanism of rock-like samples with double-crack[J]. Chinese Journal of Rock Mechanics and Engineering,2024,43(3):623-638.
    [5]
    陈卫忠,李术才,邱祥波,等. 岩石裂纹扩展的实验与数值分析研究[J]. 岩石力学与工程学报,2003,22(1):18-23. doi: 10.3321/j.issn:1000-6915.2003.01.003

    CHEN Weizhong,LI Shucai,QIU Xiangbo,et al. Experimental and numerical research on crack propagation in rock under compression[J]. Chinese Journal of Rock Mechanics and Engineering,2003,22(1):18-23. doi: 10.3321/j.issn:1000-6915.2003.01.003
    [6]
    YIN Tubing,LI Qiang,LI Xibing. Experimental investigation on mode I fracture characteristics of granite after cyclic heating and cooling treatments[J]. Engineering Fracture Mechanics,2019,222. DOI: 10.1016/j.engfracmech.2019.106740.
    [7]
    乔趁,王宇,宋正阳,等. 饱水裂隙花岗岩周期冻胀力演化特性试验研究[J]. 岩土力学,2021,42(8):2141-2150.

    QIAO Chen,WANG Yu,SONG Zhengyang,et al. Experimental study on the evolution characteristics of cyclic frost heaving pressure of saturated fractured granite[J]. Rock and Soil Mechanics,2021,42(8):2141-2150.
    [8]
    BAI Yao,SHAN Renliang,JU Yang,et al. Experimental study on the strength,deformation and crack evolution behaviour of red sandstone samples containing two ice-filled fissures under triaxial compression[J]. Cold Regions Science and Technology,2020,174. DOI: 10.1016/j.coldregions.2020.103061.
    [9]
    单仁亮,白瑶,孙鹏飞,等. 裂隙红砂岩冻胀力特性试验研究[J]. 煤炭学报,2019,44(6):1742-1752.

    SHAN Renliang,BAI Yao,SUN Pengfei,et al. Experimental study on frost heaving pressure properties in fractured red sandstone[J]. Journal of China Coal Society,2019,44(6):1742-1752.
    [10]
    李平,唐旭海,刘泉声,等. 双裂隙类砂岩冻胀断裂特征与强度损失研究[J]. 岩石力学与工程学报,2020,39(1):115-125.

    LI Ping,TANG Xuhai,LIU Quansheng,et al. Experimental study on fracture characteristics and strength loss of intermittent fractured quasi-sandstone under freezing and thawing[J]. Chinese Journal of Rock Mechanics and Engineering,2020,39(1):115-125.
    [11]
    贾蓬,王晓帅,王德超. 饱水裂隙岩石冻融变形特性研究[J]. 岩土力学,2023,44(2):345-354.

    JIA Peng,WANG Xiaoshuai,WANG Dechao. Study on the freeze-thaw deformation characteristics of saturated fractured rock[J]. Rock and Soil Mechanics,2023,44(2):345-354.
    [12]
    AGGELIS D G. Classification of cracking mode in concrete by acoustic emission parameters[J]. Mechanics Research Communications,2011,38(3):153-157. doi: 10.1016/j.mechrescom.2011.03.007
    [13]
    冯帆,陈绍杰,王琦,等. 真三轴卸载–动力扰动下自然与饱水砂岩破坏特性试验研究[J]. 岩石力学与工程学报,2022,41(11):2240-2253.

    FENG Fan,CHEN Shaojie,WANG Qi,et al. Experimental study on failure characteristics of natural and saturated sandstone under true triaxial unloading and dynamic disturbance condition[J]. Chinese Journal of Rock Mechanics and Engineering,2022,41(11):2240-2253.
    [14]
    ZHOU Xiaoping,NIU Yong,CHEN Hao,et al. Cracking behaviors and chaotic characteristics of sandstone with unfilled and filled dentate flaw[J]. Theoretical and Applied Fracture Mechanics,2021,112. DOI: 10.1016/j.tafmec.2020.102876.
    [15]
    王宇,高少华,孟华君,等. 不同频率增幅疲劳荷载下双裂隙花岗岩破裂演化声发射特性与裂纹形态研究[J]. 岩石力学与工程学报,2021,40(10):1976-1989.

    WANG Yu,GAO Shaohua,MENG Huajun,et al. Investigation on acoustic emission characteristics and fracture network patterns of pre-flawed granite subjected to increasing-amplitude fatigue loads[J]. Chinese Journal of Rock Mechanics and Engineering,2021,40(10):1976-1989.
    [16]
    吴宝杨,王伟男,郭东明. 浸水次数影响下裂隙砂岩强度损伤及声发射特征[J]. 采矿与安全工程学报,2020,37(5):1054-1060.

    WU Baoyang,WANG Weinan,GUO Dongming. Strength damage and AE characteristics of fractured sandstone under the influence of water intrusion times[J]. Journal of Mining & Safety Engineering,2020,37(5):1054-1060.
    [17]
    张国凯,李海波,王明洋,等. 基于声学测试和摄像技术的单裂隙岩石裂纹扩展特征研究[J]. 岩土力学,2019,40(增刊1):63-72,81.

    ZHANG Guokai,LI Haibo,WANG Mingyang,et al. Crack propagation characteristics in rocks containing single fissure based on acoustic testing and camera technique[J]. Rock and Soil Mechanics,2019,40(S1):63-72,81.
    [18]
    DING Xin,XIAO Xiaochun,CUI Jingzhi,et al. Damage evolution,fractal dimension and a new crushing energy formula for coal with bursting liability[J]. Process Safety and Environmental Protection,2023,169:619-628. doi: 10.1016/j.psep.2022.11.059
    [19]
    TRIANTIS D,KOURKOULIS S K. An alternative approach for representing the data provided by the acoustic emission technique[J]. Rock Mechanics and Rock Engineering,2018,51(8):2433-2438. doi: 10.1007/s00603-018-1494-1
    [20]
    FARHIDZADEH A,SALAMONE S,SINGLA P. A probabilistic approach for damage identification and crack mode classification in reinforced concrete structures[J]. Journal of Intelligent Material Systems and Structures,2013,24(14):1722-1735. doi: 10.1177/1045389X13484101
    [21]
    ZHANG Zhibo,LIU Xianan,ZHANG Yinghua,et al. Comparative study on fracture characteristics of coal and rock samples based on acoustic emission technology[J]. Theoretical and Applied Fracture Mechanics,2021,111. DOI: 10.1016/j.tafmec.2020.102851.
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