不同切缝管材质下切缝药包爆炸冲击波传播特性研究
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摘要
综合采用高速纹影实验系统和空气冲击波超压测试系统,对不锈钢管、PVC管、有机玻璃管材质的切缝药包爆炸冲击波与爆生气体的传播机制进行探讨研究,同时捕捉了沿切缝方向与垂直切缝方向的空气冲击波超压.结果表明:3种切缝管材质下爆炸冲击波与爆生气体的扩展形态基本相同,都保持着高度对称的形态.爆炸冲击波和爆生气体都是优先从切缝管中向外传播,这一特性不受切缝管材质的影响,爆炸冲击波优先沿切缝方向扩展,爆生气体主要沿切缝方向扩展.等距离对比分析3种材质的切缝药包空气冲击波超压,不锈钢管材质的切缝药包沿切缝方向与垂直切缝方向的超压比值最大,有机玻璃管的超压比值最小.数值模拟得出了切缝药包近区爆炸波动场的变化规律,与纹影实验结果在形态上基本一致.
Synthetically using high-speed schlieren experimental system and the explosion shock wave overpressure test system,the propagation mechanism of explosion wave and explosion gas in cutting seam cartridge of the stainless steel tube,PVC tube,and plexiglass tube material was studied,and the explosion shock wave overpressure along the cut direction and the vertical cut direction was captured.The results show that the explosion shock wave and explosion gas of the three kinds of slitted tubes are basically the same symmetrical extension form.Explosion shock wave and explosion gas are preferentially propagated outward from the slotted pipe which is not affected by the material of the slotted pipe.Explosion shock wave preferentially propagates along the direction of the kerf,and the explosion gas mainly expands along the direction of the kerf.Equidistance comparison analysis explosion shock wave overpressure of the three materials slotted cartridge,the overpressure ratio of slotted cartridge cut direction and the vertical cut direction,which with stainless steel material is the biggest,plexiglass is the smallest.The variation law of the explosion wave field in the near region of the slotted cartridge was obtained by numerical simulation,basically consistent with the schlieren experimental results.
Synthetically using high-speed schlieren experimental system and the explosion shock wave overpressure test system,the propagation mechanism of explosion wave and explosion gas in cutting seam cartridge of the stainless steel tube,PVC tube,and plexiglass tube material was studied,and the explosion shock wave overpressure along the cut direction and the vertical cut direction was captured.The results show that the explosion shock wave and explosion gas of the three kinds of slitted tubes are basically the same symmetrical extension form.Explosion shock wave and explosion gas are preferentially propagated outward from the slotted pipe which is not affected by the material of the slotted pipe.Explosion shock wave preferentially propagates along the direction of the kerf,and the explosion gas mainly expands along the direction of the kerf.Equidistance comparison analysis explosion shock wave overpressure of the three materials slotted cartridge,the overpressure ratio of slotted cartridge cut direction and the vertical cut direction,which with stainless steel material is the biggest,plexiglass is the smallest.The variation law of the explosion wave field in the near region of the slotted cartridge was obtained by numerical simulation,basically consistent with the schlieren experimental results.
引文
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[14]肖正学,陆渝生,张志程,等.切缝药包聚能效应的动光弹试验[J].解放军理工大学学报(自然科学版),2005,6(5):447-450.XIAO Zhengxue,LU Yusheng,ZHANG Zhicheng,et al.Dynamic photoelasticity experiment on energy cumulative effect of slit charge[J].Journal of PLAUniversity of Science and Technology(Natural Science Edition),2005,6(5):447-450.
[15]SETTLES G S,COVERT E E.Schlieren and shadowgraph techniques:Visualizing phenomena in transport media[J].Applied Mechanics Reviews,2002,55(4):76-77.
[16]CAMERON TROPEA,ALEXANDER L YARIN,JOHN F FOSS.Springer handbook of experimental fluid mechanics[M].Germany:Springer Berlin Heidelberg,2007:476-477.
[2]WANG Y.Study of the dynamic fracture effect using slotted cartridge decoupling charge blasting[J].International Journal of Rock Mechanics and Mining Sciences,2017,96(4):34-46.
[3]YANG R,WANG Y,DING C.Laboratory study of wave propagation due to explosion in a jointed medium[J].International Journal of Rock Mechanics and Mining Sciences,2016,81(5):70-78.
[4]李清,于强,朱各勇,等.不同药量的切缝药包双孔爆破裂纹扩展规律试验[J].岩石力学与工程学报,2017,36(9):2205-2212.LI Qing,YU Qiang,ZHU Geyong,et al.Experimental study of crack propagation under two-hole slotted cartridge blasting with different amounts of charge[J].Chinese Journal of Rock Mechanics and Engineering,2017,36(9):2205-2212.
[5]李清,梁媛,任可可,等.聚能药卷的爆炸裂纹定向扩展过程试验研究[J].岩石力学与工程学报,2010,29(8):1684-1689.LI Qing,LIANG Yuan,REN Keke,et al.Experimental study of propagation of directional cracks with shaped charge under blasting load[J].Chinese Journal of Rock Mechanics and Engineering,2010,29(8):1684-1689.
[6]杨仁树,左进京,岳中文,等.爆炸载荷作用下相向裂纹扩展行为的实验研究[J].煤炭学报,2017,42(5):1093-1098.YANG Renshu,ZUO Jinjing,YUE Zhongwen,et al.Experimental study on opposite cracks propagation behavior under blast loading[J].Journal of China Coal Society,2017,42(5):1093-1098.
[7]杨仁树,王雁冰,薛华俊,等.切缝药包爆破岩石爆生裂纹断面的SEM试验[J].中国矿业大学学报,2013,42(3):337-341.YANG Renshu,WANG Yanbing,XUE Huajun,et al.SEM experiment of rock crack cross section morphology after explosion fracturing with slotted cartridge[J].Journal of China University of Mining&Technology,2013,42(3):337-341.
[8]杨仁树,岳中文,董聚才,等.断续节理介质爆生裂纹扩展的动焦散实验研究[J].中国矿业大学学报,2008,37(4):467-472.YANG Renshu,YUE Zhongwen,DONG Jucai,et al.Dynamic caustics experiment of blasting crack propagation in discontinuous jointed material[J].Journal of China University of Mining&Technology,2008,37(4):467-472.
[9]杨仁树,付晓强,杨立云,等.冻结立井爆破冻结壁成形控制与井壁减振研究[J].煤炭学报,2016,41(12):2975-2992.YANG Renshu,FU Xiaoqiang,YANG Liyun,et al.Research on the shaping control of frozen wall and blasting vibration mitigation of shaft wall effect in mine vertical shaft[J].Journal of China Coal Society,2016,41(12):2975-2992.
[10]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(1):16-27.SONG Junsheng,WANG Yanbing,GAO Xiangtao,et al.The mechanism of directional fracture controlled blasting and its application[J].Journal of Mining Science and Technology,2016,1(1):16-27.
[11]YANG Y Q,GAO Q C,YU M S,et al.Experimental study of mechanism and technology of directed crack blasting[J].Journal of China University of Mining&Technology,1995,5(2):69-77.
[12]杨国梁,杨仁树,佟强.切缝药包掏槽爆破研究与应用[J].煤炭学报,2012,37(3):385-388.YANG Guoliang,YANG Renshu,TONG Qiang,et al.Research and application of cut blasting with slotted charge[J].Journal of China Coal Society,2012,37(3):385-388.
[13]肖正学,陆忞,陆渝生,等.切缝宽度对药包爆炸效应影响的动光弹试验[J].解放军理工大学学报(自然科学版),2006,7(4):371-375.XIAO Zhengxue,LU Xin,LU Yusheng,et al.Dynamic photoelasticity experimental study on influence of slit's width on slit charge's blast effect[J].Journal of PLA University of Science and Technology(Natural Science Edition),2006,7(4):371-375.
[14]肖正学,陆渝生,张志程,等.切缝药包聚能效应的动光弹试验[J].解放军理工大学学报(自然科学版),2005,6(5):447-450.XIAO Zhengxue,LU Yusheng,ZHANG Zhicheng,et al.Dynamic photoelasticity experiment on energy cumulative effect of slit charge[J].Journal of PLAUniversity of Science and Technology(Natural Science Edition),2005,6(5):447-450.
[15]SETTLES G S,COVERT E E.Schlieren and shadowgraph techniques:Visualizing phenomena in transport media[J].Applied Mechanics Reviews,2002,55(4):76-77.
[16]CAMERON TROPEA,ALEXANDER L YARIN,JOHN F FOSS.Springer handbook of experimental fluid mechanics[M].Germany:Springer Berlin Heidelberg,2007:476-477.