三维模型柱状药包爆生裂纹扩展规律研究

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摘要

利用有机玻璃材料，采用高速摄影和数值模拟方法研究不同位置起爆柱状药包爆生裂纹扩展和损伤破坏差异。研究结果表明，正反向起爆时炮孔周围均产生多条径向裂纹，爆生裂纹面经历了由“密集波纹状→光滑平坦→少量径向微裂隙→密集径向裂隙”逐步转变的过程。正向起爆时，径向裂纹优先产生，并逐渐向模型内部延伸，在炮孔底部产生较大的超深扩展现象。而反向起爆时，底部“圆锥形”裂纹面与炮孔径向裂纹同时产生，炮孔底部裂纹面消耗较多能量，其径向裂纹扩展速度较正向起爆时小，扩展时间也较短，但有利于岩石的抛掷。由模拟结果可知，柱状药包反向起爆比正向起爆爆破损伤区范围大，并且爆破损伤的均匀程度好。因此，在掏槽爆破中，为提高岩石的抛掷效果，应尽量采用反向起爆方式进行爆破；而在松动爆破中，为增加岩石中裂纹的扩展深度，应尽量采用正向起爆方式进行爆破。

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	郭洋1
	李清2
	杨仁树1
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	许鹏2
	王渝1
	霍树森2

关键词 ：高速摄影法, ABAQUS数值模拟, 多重分形, 柱状药包, 爆炸应力波, 裂纹扩展

Abstract：

High-speed photography and numerical simulation were used to study the difference of crack propagation and damage of cylindrical charge when arranged at different positions in polymethyl methacrylate (PMMA).The results show that there are multiple radial cracks around the boreholes during forward and reverse detonation, and the explosive crack surface undergoes a gradual transformation from “dense corrugated” to “smooth flat” to “a small amount of radial microcracks” to “dense radial cracks”.In the forward detonation, the radial crack occurs preferentially and gradually extends to the interior of the model, resulting in a large ultra-deep propagation at the bottom of the borehole.In reverse detonation, the bottom “conical” crack surface and the borehole radial crack occur at the same time, the crack surface at the bottom of the borehole consumes more energy, the radial crack propagation speed is smaller and the propagation time is shorter than that in the forward detonation, but it is beneficial to the throwing of rock.The simulation results show that the damage area of cylindrical charge reverse detonation is larger than that of forward detonation blasting, and the uniform degree of blasting damage is better.Therefore, in groove blasting, in order to improve the throwing effect of the rock, the reverse detonation method should be adopted as long as possible.While in the loose blasting, in order to increase the crack propagation depth in the rock, the forward detonation method should be adopted as long as possible.

Key words： high-speed photography ABAQUS numerical simulation multifractal cylindrical charge explosive stress wave crack propagation

收稿日期: 2019-05-30 出版日期: 2020-05-15

引用本文:

郭洋1，李清2，杨仁树1,2,3，许鹏2，王渝1，霍树森2. 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.
GUO Yang1，LI Qing2，YANG Renshu1,2,3，XU Peng2，WANG Yu1，HUO Shusen2. Study on crack propagation law of column charges in three-dimensional models. JOURNAL OF VIBRATION AND SHOCK, 2020, 39(10): 133-140.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2020/V39/I10/133

[1] Starfield A M, Pugliese J M. Compression waves generated in rock by cylindrical explosive charges: A comparison between a computer model and field measurements[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanics, 1968, 5(1): 65-77.

[2] 魏海霞,张强强.等效球药包迭加模型的应力计算分析[J].爆破,2016,33(04):15-21.

WEI Haixia,ZHANG Qiangqiang.Calculation and analysis on stress superposition model of equivalent spherical charge[J].Blasting, 2016,33(04):15-21.

[3] 孙海利. 基于ANSYS/Ls-dyna仿真模拟对柱状药包爆破地震效应的研究[D].长安大学,2015.

SUN Haili.Then study of Bundle blasthole blasting seismic effect based on ansys/ls-dyna simulation[D].Xi’an:Chang’an University, 2015.

[4] 卢思捷,张凤德,王远明,等.裸露爆破对堤防混凝土路面毁伤效应的数值模拟[J].水电与新能源,2017(08):19-22.

LU Sijie,ZHANG Fengde,WANG Yuanming,et al. Numerical simulation on damage effects of bare blasting on concrete pavement[J].Hydropower and New Energy, 2017(08):19-22.

[5] 郑志涛. 高地应力岩体超深孔柱状装药爆破三维模型试验研究[D]. 安徽:安徽理工大学, 2017.

ZHENG Zhitao.3D model test of ultra-deep-hole column charge blasting in high geo-stress rock mass[J].Anhui:Anhui University of Science and Technology,2017.

[6] 顾宏伟,赵燕明,金文. 柱状药包岩石中爆炸的数值模拟[J]. 工程爆破, 2007, 13(1): 24-27.

GU Hongwei,ZHAO Yanming,JIN Wen.Numerical simulation of explosion with cylinder charge in rock[J].Engineering Blasting, 2007, 13(1): 24-27.

[7] 陈叶青,吉国栋. 柱状药包岩石中爆炸的三维数值模拟[J]. 工程爆破, 2000, 6(3): 8-12+17.

CHEN Yeqing,JI Guodong. 3-D numerical simulation of explosion of Bundle blastholes in rock[J].Engineering Blasting, 2000, 6(3): 8-12+17.

[8] 刘永胜,彭建国,王梦恕,等.海底隧道钻爆开挖振动场特征研究[J].土木工程学报,2015,48(S1):341-345.

LIU Yongsheng,PENG Jianguo,WANG Mengshu.Vibration field feature research of subsea tunnel during drilling and blasting excavation[J].China Civil Engineering Journal,. 2015,48(S1):341-345.

[9]Blair D P. Blast vibration dependence on charge length, velocity of detonation and layered media[J]. International Journal of Rock Mechanics and Mining Sciences, 2014, 65: 29-39.

[10]Blair D, Minchinton A. On the damage zone surrounding a single blasthole[J]. Fragblast, 1997, 1(1): 59-72.

[11] Chi L Y , Zhang Z X , Aalberg A , et al. Experimental Investigation of Blast-Induced Fractures in Rock Cylinders[J]. Rock Mechanics and Rock Engineering, 2019.

[12] Chi L Y , Zhang Z X , Aalberg A , et al. Fracture Processes in Granite Blocks Under Blast Loading[J]. 2019.

[13]Vanbrabant F, Chacón E P, Quiñones L A. P and S Mach waves generated by the detonation of a cylindrical explosive charge–experiments and simulations[J]. Fragblast, 2002, 6(1): 21-35.

[14] 王春先,蒋晓平. 柱状药包硐室爆破应力场分布规律的数值研究[J]. 路基工程, 2009, 143(2): 155-156.

WANG Chunxian,JIANG Xiaoping.Numerical study on the distribution laws of stress field in bladder package[J]. Subgrade Engineering, 2009, 143(2): 155-156.

[15] 任宪仁. 单自由面条件下延长药包爆破作用及数值模拟[D]. 武汉:武汉科技大学, 2004.

REN Xianren.Extended charge in linear explosion effect and numerical simulation in a single free surface[D].Wuhan:wuhan University of Science and Technology,2004.

[16] 宋俊生,王雁冰,高祥涛,等.定向断裂控制爆破机理及应用[J].矿业科学学报,2016,1(01):16-28.

SONG Junsheng,WANG Yanbing,GAO Xiangtao,et al.The mechanism of directional fracture controlled blasting and its application[J]. Journal of Ming science and Technology, 2016,1(01):16-28.

[17]郭东明,闫鹏洋,薛磊,等.动静载荷下巷道围岩裂纹扩展规律的试验研究[J].矿业科学学报,2016,1(02):146-154.

GUO Dongming,YAN Pengyang, XUE Lei,et al.The experimental research on the propagation laws of cracks in roadway surrounding rock subjected to static-dynamic load[J].Journal of Ming science and Technology, 2016,1(01):16-28.

[18]许鹏,陈程,郭洋,等.含垂直层理介质在切缝药包爆破下裂纹扩展行为的试验研究[J].矿业科学学报,2019,4(06):498-505.

Xu Peng，Chen Cheng，Guo Yang，et al． Experimental study on crack propagation of slit charge blasting in media with vertical bedding plane［J］．Journal of Mining Science and Technology,2019,4(6):498-505.

[19]张召冉,左进京,郭义先.爆炸载荷下空孔及其缺陷对裂纹扩展影响机理研究[J].振动与冲击,2019,38(18):115-121.

ZHANG Zhaoran, ZUO Jinjing, GUO Yixian. Effects of empty hole and its defects on the crack propagation under explosive loading[J].Journal of Vibration and Shock, 2019,38(18):115-121.

[20]李清,郭洋,徐文龙,等.束状炮孔爆破倾斜张开节理的动态断裂特性研究[J].振动与冲击,2019,38(06):151-158.

LI Qing, GUO Yang,XU Wenlong, et al. Investigation on the dynamic fracture property of oblique open-joints under bunch-hole explosion[J].Journal of Vibration and Shock, 2019,38(06):151-158.

[21]李清,郭洋,马万权,等.半圆盘构件冲击断裂特性的动态焦散线实验研究[J].振动与冲击,2016,35(09):52-58.

LI Qing, GUO Yang, MA Wanquan, et al. Dynamic caustics tests for semi-circular specimen under impact loading[J].Journal of Vibration and Shock, 2016,35(09):52-58.

[22] 刘巍, 徐明, 陈忠范. ABAQUS混凝土损伤塑性模型参数标定及验证[J]. 工业建筑, 2014,44(s1):167-171.

LIU Wei, XU Ming, CHEN Zhongfan.Parameters calibration and verification of concrete damage plasticity model of Abaqus[J].Industial Construction, 2014,44(s1):167-171.