切缝药包不耦合装药爆破爆生裂纹动态断裂效应的试验研究
|
摘要
利用爆炸加载数字激光动态焦散线试验系统,对不同装药结构爆破爆生裂纹动态断裂效应进行分析,研究切缝药包的定向断裂控制爆破机制,比较爆生主裂纹和次裂纹动态能量释放率的差异。结果表明:不耦合系数1=1.67时,切缝药包爆破效果最理想;爆生主裂纹的扩展速度、动态应力强度因子随时间总体呈振荡下降的趋势,在扩展过程的中后期达到一个较小的峰值;橡皮泥介质作为炸药爆炸产物与炮孔壁间的缓冲层,传能效果良好;次裂纹尖端的动态能量释放率数值整体上小于2条主裂纹。
Explosion load test system of digital laser dynamic caustics is used to analyze the dynamic fracture effect of blasting crack with different charging structures.Mechanism of directional fracture blasting with slotted cartridge is studied and the difference of dynamic energy release rate between principal crack and secondary crack is compared.The results show that the blasting effect is best when the decoupling coefficient 1= 1.67.The propagation velocity and dynamic stress intensity factor of principal crack show a downward trend in the mass,and is up to a smaller peak in the mid-and late-expansion processes.As the buffer layer between explosive product and blasting hole wall,the plasticine medium transfers energy well.The dynamic energy release rate values of secondary crack as a whole is less than that of two principal cracks.
Explosion load test system of digital laser dynamic caustics is used to analyze the dynamic fracture effect of blasting crack with different charging structures.Mechanism of directional fracture blasting with slotted cartridge is studied and the difference of dynamic energy release rate between principal crack and secondary crack is compared.The results show that the blasting effect is best when the decoupling coefficient 1= 1.67.The propagation velocity and dynamic stress intensity factor of principal crack show a downward trend in the mass,and is up to a smaller peak in the mid-and late-expansion processes.As the buffer layer between explosive product and blasting hole wall,the plasticine medium transfers energy well.The dynamic energy release rate values of secondary crack as a whole is less than that of two principal cracks.
引文
[1]张志呈.定向断裂控制爆破[M].北京:冶金工业出版社,2000,5.(ZHANG Zhicheng.Directional fracture controlled blasting[M].Beijing:China Metallurgical Industry Press,2000:5.(in Chinese))
[2]赵金昌,李义,马步才,等.双介质不耦合装药控制爆破方法[J].煤炭学报,2009,34(12):1637–1642.(ZHAO Jinchang,LI Yi,MA Bucai,et al.Two-medium decoupling blasting method of chargecontrol[J].Journal of China Coal Society,2009,34(12):1 637–1 642.(in Chinese))
[3]张玉明,员永峰,张奇.切缝药包破岩机制及现场应用[J].爆破器材,2001,30(5):5–8.(ZHANG Yuming,YUAN Yongfeng,ZHANG Qi.The slit-charge breaking rock mechanism and application[J].Explosive Materials,2001,30(5):5–8.(in Chinese))
[4]杨永琦,金乾坤,杨仁树,等.岩巷定向断裂爆破新工艺[J].工程爆破,1995,1(1):8–10.(YANG Yongqi,JIN Qiankun,YANGRenshu,et al.A new technology of directional fracture blasting in rockdrift[J].Engineering Blasting,1995,1(1):8–10.(in Chinese))
[5]唐中华,张志呈,向开伟,等.切缝药包爆破的作用机制[J].云南冶金,1998,27(4):7–11.(TANG Zhonghua,ZHANG Zhicheng,XIANG Kaiwei.The mechanism of lancing cartridge blasting[J].Yunnan Metallurgy,1998,27(4):7–11.(in Chinese))
[6]徐颖,孟益平,程玉生.装药不耦合系数对爆破裂纹控制的试验研究[J].岩石力学与工程学报,2002,21(12):1843–1847.(XUYing,MENG Yiping,CHENG Yusheng.Study on control of blastcrack by decoupling charge index[J].Chinese Journal of RockMechanics and Engineering,2002,21(12):1 843–1 847.(inChinese))
[7]钟明寿,龙源,谢全民,等.装药不耦合系数对碳酸盐岩爆炸地震波能量的影响[J].爆炸与冲击,2011,31(6):612–618.(ZHONGMingshou,LONG Yuan,XIE Quanmin,et al.Effect of decouplingcharge coefficients on explosion seismic wave energy in carbonaterocks[J].Explosion and Shock Waves,2011,31(6):612–618.(in Chinese))
[8]姜琳琳.切缝药包定向断裂爆破机制与应用研究[博士学位论文][D].北京:中国矿业大学,2010.(JIANG Linlin.Mechanism andapplication of directional fracture blasting with slotted cartridge[Ph.D.Thesis][D].Beijing:China University of Mining and Technology,2010.(in Chinese))
[9]陈岗.切缝药包间隔装药爆破的试验研究[硕士学位论文][D].北京:中国矿业大学,2010.(CHEN Gang.Experimental study ondecked silt-charge blasting[M.S.Thesis][D].Beijing:China Universityof Mining and Technology,2010.(in Chinese))
[10]PAPADOPOULOS G A.Fracture mechanics:the experimental methodof caustics and the det.-criterion of facture[M].New York:Springer-Verlag Berlin Herdelberg,1992:23–24.
[11]TAKAHASHI K,ARAKAWA K.Experimental mechanics,dependence of crack acceleration on the dynamic stress intensityfactor in polymers[J].Experimental Mechanics,1987,27(2):195–217.
[12]FREUND L B.Dynamic fracture mechanics[M].Edinburgh:CambridgeUniversity Press,1990:67–68.
[13]JOHANSSON C H,PERSSON P A.Demonics of high explosive[M].New York:Academic Press,1970:48–55.
[14]王文龙.钻眼爆破[M].北京:煤炭工业出版社,1984:240–245.(WANG Wenlong.Drilling and blasting[M].Beijing:China CoalIndustry Publishing House,1984:240–245.(in Chinese))
[15]杨立云.岩石类材料的动态断裂与围压下爆生裂纹的实验研究[博士学位论文][D].北京:中国矿业大学,2011.(YANG Liyun.Experimental study on rock-type materials dynamic fracture andblasting crack propagation under confining pressure[Ph.D.Thesis][D].Beijing:China University of Mining and Technology,2011.(in Chinese))
[16]王泽.断裂力学[M].南宁:广西人民出版社,1979:56–57.(WANG Ze.Fracture mechanics[M].Nanning:Guangxi People sPublishing House,1979:56–57.(in Chinese))
[2]赵金昌,李义,马步才,等.双介质不耦合装药控制爆破方法[J].煤炭学报,2009,34(12):1637–1642.(ZHAO Jinchang,LI Yi,MA Bucai,et al.Two-medium decoupling blasting method of chargecontrol[J].Journal of China Coal Society,2009,34(12):1 637–1 642.(in Chinese))
[3]张玉明,员永峰,张奇.切缝药包破岩机制及现场应用[J].爆破器材,2001,30(5):5–8.(ZHANG Yuming,YUAN Yongfeng,ZHANG Qi.The slit-charge breaking rock mechanism and application[J].Explosive Materials,2001,30(5):5–8.(in Chinese))
[4]杨永琦,金乾坤,杨仁树,等.岩巷定向断裂爆破新工艺[J].工程爆破,1995,1(1):8–10.(YANG Yongqi,JIN Qiankun,YANGRenshu,et al.A new technology of directional fracture blasting in rockdrift[J].Engineering Blasting,1995,1(1):8–10.(in Chinese))
[5]唐中华,张志呈,向开伟,等.切缝药包爆破的作用机制[J].云南冶金,1998,27(4):7–11.(TANG Zhonghua,ZHANG Zhicheng,XIANG Kaiwei.The mechanism of lancing cartridge blasting[J].Yunnan Metallurgy,1998,27(4):7–11.(in Chinese))
[6]徐颖,孟益平,程玉生.装药不耦合系数对爆破裂纹控制的试验研究[J].岩石力学与工程学报,2002,21(12):1843–1847.(XUYing,MENG Yiping,CHENG Yusheng.Study on control of blastcrack by decoupling charge index[J].Chinese Journal of RockMechanics and Engineering,2002,21(12):1 843–1 847.(inChinese))
[7]钟明寿,龙源,谢全民,等.装药不耦合系数对碳酸盐岩爆炸地震波能量的影响[J].爆炸与冲击,2011,31(6):612–618.(ZHONGMingshou,LONG Yuan,XIE Quanmin,et al.Effect of decouplingcharge coefficients on explosion seismic wave energy in carbonaterocks[J].Explosion and Shock Waves,2011,31(6):612–618.(in Chinese))
[8]姜琳琳.切缝药包定向断裂爆破机制与应用研究[博士学位论文][D].北京:中国矿业大学,2010.(JIANG Linlin.Mechanism andapplication of directional fracture blasting with slotted cartridge[Ph.D.Thesis][D].Beijing:China University of Mining and Technology,2010.(in Chinese))
[9]陈岗.切缝药包间隔装药爆破的试验研究[硕士学位论文][D].北京:中国矿业大学,2010.(CHEN Gang.Experimental study ondecked silt-charge blasting[M.S.Thesis][D].Beijing:China Universityof Mining and Technology,2010.(in Chinese))
[10]PAPADOPOULOS G A.Fracture mechanics:the experimental methodof caustics and the det.-criterion of facture[M].New York:Springer-Verlag Berlin Herdelberg,1992:23–24.
[11]TAKAHASHI K,ARAKAWA K.Experimental mechanics,dependence of crack acceleration on the dynamic stress intensityfactor in polymers[J].Experimental Mechanics,1987,27(2):195–217.
[12]FREUND L B.Dynamic fracture mechanics[M].Edinburgh:CambridgeUniversity Press,1990:67–68.
[13]JOHANSSON C H,PERSSON P A.Demonics of high explosive[M].New York:Academic Press,1970:48–55.
[14]王文龙.钻眼爆破[M].北京:煤炭工业出版社,1984:240–245.(WANG Wenlong.Drilling and blasting[M].Beijing:China CoalIndustry Publishing House,1984:240–245.(in Chinese))
[15]杨立云.岩石类材料的动态断裂与围压下爆生裂纹的实验研究[博士学位论文][D].北京:中国矿业大学,2011.(YANG Liyun.Experimental study on rock-type materials dynamic fracture andblasting crack propagation under confining pressure[Ph.D.Thesis][D].Beijing:China University of Mining and Technology,2011.(in Chinese))
[16]王泽.断裂力学[M].南宁:广西人民出版社,1979:56–57.(WANG Ze.Fracture mechanics[M].Nanning:Guangxi People sPublishing House,1979:56–57.(in Chinese))
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心