分段装药爆炸应变场与裂隙场分布规律

左进京 杨仁树 龚敏 谢全民 赵勇 尤元元

左进京, 杨仁树, 龚敏, 谢全民, 赵勇, 尤元元. 分段装药爆炸应变场与裂隙场分布规律[J]. 爆炸与冲击, 2023, 43(3): 035101. doi: 10.11883/bzycj-2022-0333
引用本文: 左进京, 杨仁树, 龚敏, 谢全民, 赵勇, 尤元元. 分段装药爆炸应变场与裂隙场分布规律[J]. 爆炸与冲击, 2023, 43(3): 035101. doi: 10.11883/bzycj-2022-0333
ZUO Jinjing, YANG Renshu, GONG Min, XIE Quanmin, ZHAO Yong, YOU Yuanyuan. On the distribution of explosion strain field and fracture field in segment charge[J]. Explosion And Shock Waves, 2023, 43(3): 035101. doi: 10.11883/bzycj-2022-0333
Citation: ZUO Jinjing, YANG Renshu, GONG Min, XIE Quanmin, ZHAO Yong, YOU Yuanyuan. On the distribution of explosion strain field and fracture field in segment charge[J]. Explosion And Shock Waves, 2023, 43(3): 035101. doi: 10.11883/bzycj-2022-0333

分段装药爆炸应变场与裂隙场分布规律

doi: 10.11883/bzycj-2022-0333
基金项目: 国家自然科学基金(52208384,51934001);中国博士后基金(2020TQ0032);中央高校基本科研业务专项(FRF-TP-20-037A1,FRF-IDRY-20-019);江汉大学爆破工程湖北省重点实验室联合开放基金(PBSKL2022C05)
详细信息
    作者简介:

    左进京(1990- ),男,博士,讲师,cumtbzjj@163.com

    通讯作者:

    杨仁树(1963- ),男,教授,博士生导师,cumtbyrsz@163.com

  • 中图分类号: O384;O385

On the distribution of explosion strain field and fracture field in segment charge

  • 摘要: 为探究分段装药爆炸应变场与裂隙场分布规律,采用数字图像相关分析方法与电子计算机断层扫描实验方法,分析了孔内分段装药爆炸全场应变传播规律,建立了爆后“岩石—爆炸裂隙”的三维重构模型,描述了爆炸裂纹位置与形态的空间分布情况,得到岩石材料爆炸裂隙的分形维数与损伤度。研究结果表明:分段装药改变了连续装药对介质的全场应变形态,由一次应变改变为两次应变,在满足第一段炸药对介质的破坏作用下,同时加大了第二段炸药对介质的作用效应;上分段装药占比0.4时,下分段介质受爆炸作用应变峰值更大,更好满足工程实践中下半段岩体对爆炸能量的需求;相同装药系数下,连续装药结构爆炸裂纹没有贯穿试件整体,炮孔封堵段的爆炸裂纹较少,分段装药结构下,由于提高了炸药的位置,使得上部分岩体能够更好地利用炸药爆炸的能量破碎岩石;分段装药岩石整体损伤度较连续装药提高了23.5%,其中上分段岩石损伤差异较大,分段装药上分段损伤度比连续装药提高46.4%。
  • 图  1  超高速数字图像相关实验系统

    Figure  1.  The ultra high speed digital image correlation system

    图  2  模型加工示意(mm)

    Figure  2.  Schematic diagiam of model processing (mm)

    图  3  上分段装药占比0.6的全场应变

    Figure  3.  Whole field strain with the upper section charge ratio of 0.6

    图  4  上分段占比0.4 的全场应变

    Figure  4.  Whole field strain with the upper section charge ratio of 0.4

    图  5  分段装药径向应变时程曲线

    Figure  5.  Time history of the radial strains of segment charges

    图  6  岩石分段装药示意

    Figure  6.  Schematic of rock segment charges

    图  7  被动围压装置

    Figure  7.  Passive confining pressure device

    图  8  连续装药与分段装药CT扫描原图与灰度处理图

    Figure  8.  CT scan of continuous charge and segmented charge and gray-scale processing diagram

    图  9  连续装药三维裂隙重构

    Figure  9.  Three-dimensional fracture recomposition of continuous charge

    图  10  分段装药三维裂隙重构

    Figure  10.  Three-dimensional fracture recomposition of segmented charge

    图  11  连续装药与分段装药三维体分形维数D

    Figure  11.  Three-dimensional fractal dimension D of continuous charge and sectional charge

    图  12  各装药分段三维裂隙重构

    Figure  12.  Three-dimensional fracture reconstruction of each charge segment

    图  13  上/下分段岩体三维体分形维数

    Figure  13.  Fractal dimension of upper/lower sublevel rock mass

  • [1] MA X M, WANG Y, LIN T S, et al. Intelligent decision system for vertical shaft blasting scheme based on knowledge base and its application [J]. IEEE Access, 2021, 9: 163831–163842. DOI: 10.1109/ACCESS.2021.3128550.
    [2] MA Q Y, YUAN P, ZHANG J S, et al. Blast-induced damage on millisecond blasting model test with multicircle vertical blastholes [J]. Shock and Vibration, 2015, 2015: 504043. DOI: 10.1155/2015/504043.
    [3] 颜事龙, 冯叔瑜, 金孝刚. 有机玻璃中条形药包爆炸破碎区发展过程的高速摄影研究 [J]. 爆炸与冲击, 1998, 18(3): 262–267.

    YAN S L, FENG S Y, JIN X G. Study on fracture region of cylindric exploding in PMMA by high speed photograph [J]. Explosion and Shock Waves, 1998, 18(3): 262–267.
    [4] 龚敏, 黎剑华. 延长药包不同位置起爆时的应力场 [J]. 北京科技大学学报, 2002, 24(3): 248–253. DOI: 10.13374/j.issn1001-053x.2002.03.047.

    GONG M, LI J H. A research on stress field of column and strip-shaped charge in different detonated points [J]. Journal of University of Science and Technology Beijing, 2002, 24(3): 248–253. DOI: 10.13374/j.issn1001-053x.2002.03.047.
    [5] 龚敏, 王德胜, 黎剑华. 全息干涉法在条形药包离面位移场研究中的应用 [J]. 爆炸与冲击, 2005, 25(3): 227–231. DOI: 10.11883/1001-1455(2005)03-0227-05.

    GONG M, WANG D S, LI J H. Application of holographic interferometry to study vertical displacement field in linear charge [J]. Explosion and Shock Waves, 2005, 25(3): 227–231. DOI: 10.11883/1001-1455(2005)03-0227-05.
    [6] 郭洋, 李清, 杨仁树, 等. 三维模型柱状药包爆生裂纹扩展规律研究 [J]. 振动与冲击, 2020, 39(10): 133–140, 184. DOI: 10.13465/j.cnki.jvs.2020.10.018.

    GUO Y, LI Q, YANG R S, et al. Study on crack propagation law of cylindrical charges in three-dimensional models [J]. Journal of Vibration and Shock, 2020, 39(10): 133–140, 184. DOI: 10.13465/j.cnki.jvs.2020.10.018.
    [7] 杨仁树, 郭洋, 李清, 等. 中间起爆柱状药包爆炸应力应变场演化规律 [J]. 煤炭学报, 2019, 44(11): 3423–3431. DOI: 10.13225/j.cnki.jccs.2018.1673.

    YANG R S, GUO Y, LI Q, et al. Evolution law on explosive stress and strain field of column charges at middle detonation position [J]. Journal of China Coal Society, 2019, 44(11): 3423–3431. DOI: 10.13225/j.cnki.jccs.2018.1673.
    [8] 陈士海, 胡帅伟, 初少凤. 微差时间及柱状装药特征对爆破振动效应影响研究 [J]. 岩石力学与工程学报, 2017, 36(S2): 3974–3983. DOI: 10.13722/j.cnki.jrme.2017.1163.

    CHEN S H, HU S W, CHU S F. Study on the blasting vibration effect influenced by millisecond time and cylindrical charging characteristics [J]. Chinese Journal of Rock Mechanics and Engineering, 2017, 36(S2): 3974–3983. DOI: 10.13722/j.cnki.jrme.2017.1163.
    [9] 李启月, 李夕兵, 范作鹏, 等. 深孔爆破一次成井技术与应用实例分析 [J]. 岩石力学与工程学报, 2013, 32(4): 664–670. DOI: 10.3969/j.issn.1000-6915.2013.04.003.

    LI Q Y, LI X B, FAN Z P, et al. One time deep hole raise blasting technology and case study [J]. Chinese Journal of Rock Mechanics and Engineering, 2013, 32(4): 664–670. DOI: 10.3969/j.issn.1000-6915.2013.04.003.
    [10] 杨国梁, 杨仁树, 姜琳琳. 轴向间隔装药爆破沿炮孔的压力分布 [J]. 爆炸与冲击, 2012, 32(6): 653–657. DOI: 10.11883/1001-1455(2012)06-0653-05.

    YANG G L, YANG R S, JIANG L L. Pressure distribution along borehole with axial air-deck charge blasting [J]. Explosion and Shock Waves, 2012, 32(6): 653–657. DOI: 10.11883/1001-1455(2012)06-0653-05.
    [11] 胡涛, 李祥龙, 关思, 等. 分段装药结构爆破效果的数值模拟研究 [J]. 中国工程科学, 2014, 16(11): 36–41. DOI: 10.3969/j.issn.1009-1742.2014.11.005.

    HU T, LI X L, GUAN S, et al. Numerical simulation of structure performance under blasting with piecewise charge [J]. Strategic Study of CAE, 2014, 16(11): 36–41. DOI: 10.3969/j.issn.1009-1742.2014.11.005.
    [12] 杨仁树, 鲍舟琦, 王雁冰, 等. 数码电子雷管在高瓦斯矿井岩巷爆破掘进中的应用 [J]. 金属矿山, 2022(7): 27–34. DOI: 10.19614/j.cnki.jsks.202207004.

    YANG R S, BAO Z Q, WANG Y B, et al. Application of digital electronic detonator in blasting excavation of rock roadway in high gas mine [J]. Metal Mine, 2022(7): 27–34. DOI: 10.19614/j.cnki.jsks.202207004.
    [13] 杨仁树, 王雁冰, 张召冉, 等. 井巷工程掏槽爆破新技术及应用 [J]. 中国科学基金, 2022, 36(1): 120–127. DOI: 10.16262/j.cnki.1000-8217.2022.01.028.

    YANG R S, WANG Y B, ZHANG Z R, et al. New technology and application of cutting blasting in shaft and roadway engineering [J]. Bulletin of National Natural Science Foundation of China, 2022, 36(1): 120–127. DOI: 10.16262/j.cnki.1000-8217.2022.01.028.
    [14] GONZÁLES G L G, GONZÁLEZ J A O, DE CASTRO J T P, et al. Measuring elastoplastic strain loops in the near crack-tip region using a stereo microscope DIC system [J]. International Journal of Fatigue, 2020, 133: 105427. DOI: 10.1016/j.ijfatigue.2019.105427.
    [15] 左进京, 杨仁树, 汪文良, 等. 条形药包爆炸全场应变以及裂纹动态断裂特性研究 [J]. 工程科学学报, 2022, 44(8): 1306–1314. DOI: 10.13374/j.issn2095-9389.2021.10.19.003.

    ZUO J J, YANG R S, WANG W L, et al. Explosive full-field strain and crack dynamic fracture characteristics of a linear shaped charge [J]. Chinese Journal of Engineering, 2022, 44(8): 1306–1314. DOI: 10.13374/j.issn2095-9389.2021.10.19.003.
    [16] JU Y, ZHENG J T, EPSTEIN M, et al. 3D numerical reconstruction of well-connected porous structure of rock using fractal algorithms [J]. Computer Methods in Applied Mechanics and Engineering, 2014, 279: 212–226. DOI: 10.1016/j.cma.2014.06.035.
    [17] CHEN H D, CHENG Y P, ZHOU H X, et al. Damage and permeability development in coal during unloading [J]. Rock Mechanics and Rock Engineering, 2013, 46(6): 1377–1390. DOI: 10.1007/s00603-013-0370-2.
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出版历程
  • 收稿日期:  2022-08-07
  • 修回日期:  2022-10-02
  • 网络出版日期:  2022-10-13
  • 刊出日期:  2023-03-05

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