切缝药包光面爆破裂纹扩展时空演化分析
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摘要
光面爆破机理复杂,裂隙演化具有不确定性,现场试验难以完整观察到炮孔间裂纹的起裂、扩展至贯通。采用CAD与ANSYS联合建模技术构建空气不耦合光面爆破数值模型,运用显式动力分析软件LS-DYNA定义岩石单元失效计算获得切缝药包光面爆破裂纹扩展演化过程,从时空演化角度研究光面爆破裂纹扩展规律,从而为矿山巷道爆破工程提供更精确的指导。研究结果表明:1)CAD与ANSYS联合建模技术弥补了ANSYS对于复杂模型构建的缺陷,实现精确耦合数字建模;2)定义岩石单元失效方法可以使得爆破裂纹演化过程更为直观,切缝药包爆破相较一般空气不耦合装药结构爆破,炮孔周壁产生的径向裂纹和分叉裂纹显著减少;3)模拟不耦合系数1.5、1.8、2.25切缝药包光面爆破裂纹扩展时空过程,发现切缝药包爆破裂纹扩展演化规律,其裂隙数量随着不耦合系数的增大而减少,裂纹扩展演化长度也随之变短,分叉裂纹扩展演化明显降低,当不耦合系数为1.8时,数值模拟切缝药包爆破裂纹扩展演化形成较佳的贯通裂纹,获得较好的爆破效果。
Based on the complexity and uncertainty of smooth blasting,it is difficult to observe the blasting crack by the crack initiation,extension and transfixion through the field test.The model of smooth blasting that air as coupling medium is established by combining CAD with ANSYS.The explicit dynamic analysis software LS-DYNA is used to simulate the slotted cartridge blasting crack extension with the defined elements failure,to provide more accurate guidance for mine laneway blasting projects from the aspects of temporal and spatial evolution with multidirection cutaway views.The research results show that:1)joint modeling with CAD and ANSYS can fill the gap of ANSYS for complex model modeling,and achieve refined digital modeling for roadway;2)blasting crack extension is more intuitive with elements failure being defined,and which has contributed to the analysis of cutting effect.The blast-induced crack surrounding the hole and crack bifurcation are significantly reduced,when slotted cartridge blasting is compared with the model of smooth blasting that air as coupling medium;3)through the temporal and spatial evolution simulation of slotted cartridge when the decoupling coefficient is 1.5,1.8,2.25,respectively,it is found that the number of slotted cartridge blasting crack reduces with the increase of decoupling coefficient,the crack extension length becomes shorter,and the bifurcation of crack extension significantly decreases;When the decoupling coefficient is 1.8,the numerical simulation of slotted cartridge blasting crack extension forms a better transfixion crack evolution and obtains good blasting effect.
Based on the complexity and uncertainty of smooth blasting,it is difficult to observe the blasting crack by the crack initiation,extension and transfixion through the field test.The model of smooth blasting that air as coupling medium is established by combining CAD with ANSYS.The explicit dynamic analysis software LS-DYNA is used to simulate the slotted cartridge blasting crack extension with the defined elements failure,to provide more accurate guidance for mine laneway blasting projects from the aspects of temporal and spatial evolution with multidirection cutaway views.The research results show that:1)joint modeling with CAD and ANSYS can fill the gap of ANSYS for complex model modeling,and achieve refined digital modeling for roadway;2)blasting crack extension is more intuitive with elements failure being defined,and which has contributed to the analysis of cutting effect.The blast-induced crack surrounding the hole and crack bifurcation are significantly reduced,when slotted cartridge blasting is compared with the model of smooth blasting that air as coupling medium;3)through the temporal and spatial evolution simulation of slotted cartridge when the decoupling coefficient is 1.5,1.8,2.25,respectively,it is found that the number of slotted cartridge blasting crack reduces with the increase of decoupling coefficient,the crack extension length becomes shorter,and the bifurcation of crack extension significantly decreases;When the decoupling coefficient is 1.8,the numerical simulation of slotted cartridge blasting crack extension forms a better transfixion crack evolution and obtains good blasting effect.
引文
[1]付玉华,李夕兵,董陇军.损伤条件下深部岩体巷道光面爆破参数研究[J].岩土力学,2010,31(5):1420-1426.FU Yuhua,LI Xibing,DONG Longjun.Analysis of smooth blasting parameters for tunnels in deep damaged rock mass[J].Rock and Soil Mechanics,2010,31(5):1420-1426.
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[3]罗勇,沈兆武.切缝药包岩石定向断裂爆破的研究[J].振动与冲击,2006,25(4):155-158.LUO Yong,SHEN Zhaowu.Study on the directional fracture controlled blasting with slit-charge in rock[J].Journal of Vibration and Shock,2006,25(4):155-158.
[4]陈寿峰,薛士文,高伟伟,等.岩石聚能爆破试验与数值模拟研究[J].爆破,2012,29(4):14-18.CHEN Shoufeng,XUE Shiwen,GAO Weiwei,et al.Experimental study and numerical simulation of rock shaped charge blasting[J].Blasting,2012,29(4):14-18.
[5]戴俊,王代华,熊光红,等.切缝药包定向断裂爆破切缝管切缝宽度的确定[J].有色金属,2004,56(4):110-113.DAI Jun,WANG Daihua,XIONG Guanghong,et al.Determination of slot width in a slotted pipe for directional-split blasting[J].Nonferrous Metals,2004,56(4):110-113.
[6]吴丙权.切缝药包控制爆破初始裂缝形成及应用研究[D].西安:西安科技大学,2014:22-51.WU Bingquan.The initial crack formation and application research about the controlled blasting in cutting seam cartridge[D].Xi’an:Xi’an University of Science and Technology,2014:22-51.
[7]Langefors U.The modern technique of rock blasting[M].Sweden:Almqvist&Wiksells,1983.
[8]蒲传金,郭学彬,张志呈,等.切缝药包爆破机理分析与试验研究[J].爆破,2006,23(1):33-35.PU Chuanjin, GUO Xuebin,ZHANG Zhicheng,et al.Mechanism analysis of cutting seam cartridge blasting[J].Blasting,2006,23(1):33-35.
[9]张志雄,郭银领,李林峰.切缝药包爆破裂纹扩展机理研究[J].工程爆破,2007,13(2):11-14.ZHANG Zhixiong,GUO Yinling,LI Linfeng.Study on mechanism of crack growth of cutting seam cartridge blasting[J].Engineering Blasting,2007,13(2):11-14.
[10]谢冰,李海波,王长柏,等.节理几何特征对预裂爆破效果影响的数值模拟[J].岩土力学,2011,32(12):3812-3820.XIE Bing, LI Haibo, WANG Changbai, et al.Numerical simulation of presplit blasting influenced by geometrical characteristics of joints[J].Rock and Soil Mechanics,2011,32(12):3812-3820.
[11]李显寅,蒲传金,肖定军.论切缝药包爆破的剪应力作用[J].爆破,2009,26(1):19-21.LI Xianyin,PU Chuanjin,XIAO Dingjun.Discussion on shear stress of cutting seam cartridge blasting[J].Blasting,2009,26(1):19-21.
[12]过江,崔文强,陈辉.不同耦合介质光面爆破裂纹发展数值分析[J].黄金科学技术,2016,24(1):68-75.GUO Jiang,CUI Wenqiang,CHEN Hui.Numerical analysis of the smooth blasting crack development under different coupling medium[J]. Gold Science&Technology,2016,24(1):68-75.
[13]徐惠琳,杨帆,谢波.ANSYS与CAD联合建模时的数据接口及数据转换[J].山西建筑,2008,33(33):366-367.XU Huilin,YANG Fan,XIE Bo.Data interface and conversion technology in model building combined with ANSYS and CAD[J].Shanxi Architecture,2008,33(33):366-367.
[14]黄小华,金艳丽.岩土工程中CAD与ANSYS联合建模的数据交换[J].西部探矿工程,2009,21(12):9-12.HUANG Xiaohua,JIN Yanli.Data conversion of models using ANSYS and CAD in geological engineering[J].WestChina Exploration Engineering,2009,21(12):9-12.
[15]周科平.采矿过程模拟与仿真[M].长沙:中南大学出版社,2012:166-167.ZHOU Keping.Analogue simulation in mining process[M].Changsha:Central South University Press,2012:166-167.
[16]Liver more software technology corporation.LS-DYNA Keyword User’s Manual[K].USA:LSTC,2012.
[17]程康,苏微倩,张桂涛,等.空气间隔装药技术周边孔间距对爆破效果的研究[J].爆破,2011,28(4):15-19.CHENG Kang,SU Weiqian,ZHANG Guitao,et al.Analysis on influence of contour boreholes space with air-decked charge on smooth blasting effect[J].Blasting,2011,28(4):15-19.
[18]王鹏,周传波,耿雪峰,等.多孔同段爆破漏斗形成机理的数值模拟研究[J].岩土力学,2010,31(3):993-997.WANG Peng,ZHOU Chuanbo,GENG Xuefeng,et al.Numerical simulation of formation mechanism of multihole and same delay time of blasting crater[J].Rock and Soil Mechanics,2010,31(3):993-997.
[19]姜琳琳.切缝药包定向断裂爆破机理与应用研究[D].北京:中国矿业大学,2010:11-58.JIANG Linlin.Mechanism and application of directional fracture blasting with slotted cartridge[D].Beijing:China University of Mining and Technology,2010:11-58.
[20]王义鼎,尹建平,王志军,等.截锥型药型罩形成毁伤元特性仿真研究[J].兵器材料科学与工程,2016,39(2):26-31.WANG Yiding,YIN Jianping,WANG Zhijun,et al.Simulation on characteristics of destroying elements formed by truncated cone liner[J].Ordnance Material Science&Engineering,2016,39(2):26-31.
[21]戴俊.岩石动力学特性与爆破理论[M].北京:冶金工业出版社,2013:167.DAI Jun.Rock dynamics and blasting theory[M].Beijing:Metallurgical Industry Press,2013:167.
[2]王汉军,黄风雷,张庆明.岩石定向断裂爆破的力学分析及参数研究[J].煤炭学报,2003,28(4):399-402.WANG Hanjun,HUANG Fenglei,ZHANG Qingming.Mechanics effect analysis and parameters study on borehole directional fracture blasting[J].Journal of China Coal Society,2003,28(4):399-402.
[3]罗勇,沈兆武.切缝药包岩石定向断裂爆破的研究[J].振动与冲击,2006,25(4):155-158.LUO Yong,SHEN Zhaowu.Study on the directional fracture controlled blasting with slit-charge in rock[J].Journal of Vibration and Shock,2006,25(4):155-158.
[4]陈寿峰,薛士文,高伟伟,等.岩石聚能爆破试验与数值模拟研究[J].爆破,2012,29(4):14-18.CHEN Shoufeng,XUE Shiwen,GAO Weiwei,et al.Experimental study and numerical simulation of rock shaped charge blasting[J].Blasting,2012,29(4):14-18.
[5]戴俊,王代华,熊光红,等.切缝药包定向断裂爆破切缝管切缝宽度的确定[J].有色金属,2004,56(4):110-113.DAI Jun,WANG Daihua,XIONG Guanghong,et al.Determination of slot width in a slotted pipe for directional-split blasting[J].Nonferrous Metals,2004,56(4):110-113.
[6]吴丙权.切缝药包控制爆破初始裂缝形成及应用研究[D].西安:西安科技大学,2014:22-51.WU Bingquan.The initial crack formation and application research about the controlled blasting in cutting seam cartridge[D].Xi’an:Xi’an University of Science and Technology,2014:22-51.
[7]Langefors U.The modern technique of rock blasting[M].Sweden:Almqvist&Wiksells,1983.
[8]蒲传金,郭学彬,张志呈,等.切缝药包爆破机理分析与试验研究[J].爆破,2006,23(1):33-35.PU Chuanjin, GUO Xuebin,ZHANG Zhicheng,et al.Mechanism analysis of cutting seam cartridge blasting[J].Blasting,2006,23(1):33-35.
[9]张志雄,郭银领,李林峰.切缝药包爆破裂纹扩展机理研究[J].工程爆破,2007,13(2):11-14.ZHANG Zhixiong,GUO Yinling,LI Linfeng.Study on mechanism of crack growth of cutting seam cartridge blasting[J].Engineering Blasting,2007,13(2):11-14.
[10]谢冰,李海波,王长柏,等.节理几何特征对预裂爆破效果影响的数值模拟[J].岩土力学,2011,32(12):3812-3820.XIE Bing, LI Haibo, WANG Changbai, et al.Numerical simulation of presplit blasting influenced by geometrical characteristics of joints[J].Rock and Soil Mechanics,2011,32(12):3812-3820.
[11]李显寅,蒲传金,肖定军.论切缝药包爆破的剪应力作用[J].爆破,2009,26(1):19-21.LI Xianyin,PU Chuanjin,XIAO Dingjun.Discussion on shear stress of cutting seam cartridge blasting[J].Blasting,2009,26(1):19-21.
[12]过江,崔文强,陈辉.不同耦合介质光面爆破裂纹发展数值分析[J].黄金科学技术,2016,24(1):68-75.GUO Jiang,CUI Wenqiang,CHEN Hui.Numerical analysis of the smooth blasting crack development under different coupling medium[J]. Gold Science&Technology,2016,24(1):68-75.
[13]徐惠琳,杨帆,谢波.ANSYS与CAD联合建模时的数据接口及数据转换[J].山西建筑,2008,33(33):366-367.XU Huilin,YANG Fan,XIE Bo.Data interface and conversion technology in model building combined with ANSYS and CAD[J].Shanxi Architecture,2008,33(33):366-367.
[14]黄小华,金艳丽.岩土工程中CAD与ANSYS联合建模的数据交换[J].西部探矿工程,2009,21(12):9-12.HUANG Xiaohua,JIN Yanli.Data conversion of models using ANSYS and CAD in geological engineering[J].WestChina Exploration Engineering,2009,21(12):9-12.
[15]周科平.采矿过程模拟与仿真[M].长沙:中南大学出版社,2012:166-167.ZHOU Keping.Analogue simulation in mining process[M].Changsha:Central South University Press,2012:166-167.
[16]Liver more software technology corporation.LS-DYNA Keyword User’s Manual[K].USA:LSTC,2012.
[17]程康,苏微倩,张桂涛,等.空气间隔装药技术周边孔间距对爆破效果的研究[J].爆破,2011,28(4):15-19.CHENG Kang,SU Weiqian,ZHANG Guitao,et al.Analysis on influence of contour boreholes space with air-decked charge on smooth blasting effect[J].Blasting,2011,28(4):15-19.
[18]王鹏,周传波,耿雪峰,等.多孔同段爆破漏斗形成机理的数值模拟研究[J].岩土力学,2010,31(3):993-997.WANG Peng,ZHOU Chuanbo,GENG Xuefeng,et al.Numerical simulation of formation mechanism of multihole and same delay time of blasting crater[J].Rock and Soil Mechanics,2010,31(3):993-997.
[19]姜琳琳.切缝药包定向断裂爆破机理与应用研究[D].北京:中国矿业大学,2010:11-58.JIANG Linlin.Mechanism and application of directional fracture blasting with slotted cartridge[D].Beijing:China University of Mining and Technology,2010:11-58.
[20]王义鼎,尹建平,王志军,等.截锥型药型罩形成毁伤元特性仿真研究[J].兵器材料科学与工程,2016,39(2):26-31.WANG Yiding,YIN Jianping,WANG Zhijun,et al.Simulation on characteristics of destroying elements formed by truncated cone liner[J].Ordnance Material Science&Engineering,2016,39(2):26-31.
[21]戴俊.岩石动力学特性与爆破理论[M].北京:冶金工业出版社,2013:167.DAI Jun.Rock dynamics and blasting theory[M].Beijing:Metallurgical Industry Press,2013:167.