李春军,吴立,李红勇,周瑞锋,叶小敏,胡伟才

• 1:长江重庆航道工程局
• 2:中国地质大学(武汉)

摘要(Abstract)：

为研究水下钻孔爆破中不同水深对爆炸冲击波和岩石破碎效应的影响,结合重庆万州长江公路大桥防撞设施水下基坑及基槽开挖工程,通过ANSYS/LS-DYNA动力有限元程序,得到不同水深条件下爆炸冲击波拉应力峰值。运用MATLAB软件对不同水深岩石破碎拉应力峰值与炮孔距离的关系进行非线性拟合,计算得到不同水深条件下不同炮孔距离的峰值拉应力理论值,进而获得不同水深条件下的爆破损伤区域。研究表明炸礁区岩石上覆30 m左右水深情况下,爆破损伤区域半径为1.5 m,对水下钻孔爆破工程实践提供了依据。

关键词(KeyWords)： 水下钻孔爆破;水深影响;破岩机理;数值模拟;非线性拟合

Abstract:

Keywords:

基金项目(Foundation): 湖北省科技厅自然基金重点基金项目(2013CFA110);; 中国地质大学(武汉)教学实验室开放基金(SKJ2014065)

作者(Author): 李春军,吴立,李红勇,周瑞锋,叶小敏,胡伟才

参考文献(References)：

• [1]姜贺.新白沙沱长江特大桥3号墩基础水下爆破施工[J].山西建筑,2014(12):224-226.[1]JIANG he.Underwater blasting construction of NO 3 pier foundation of New White Sands Tuo Yangtze River Bridge[J].Shanxi Architecture,2014(12):224-226.(in Chinese)
• [2]孙远征,龙源,邵鲁中,等.水下钻孔爆破水中冲击波试验研究[J].工程爆破,2007(4):15-19.[2]SUN Yuan-zheng,LONG Yuan,SHAO Lu-zhong,et al.Experimental investigation of shock wave in water of underwater drilling blasting[J].Engineering Blasting,2007(4):15-19.(in Chinese)
• [3]陈春歌,申志兵,张贤凯,等.水下爆破冲击波危害及安全控制措施的模拟分析[J].安全与环境工程,2011(1):58-61.[3]CHEN Chun-ge,SHEN Zhi-bing,ZHANG Xian-kai,et al.Simulation of underwater explosion shock hazards and safety control[J].Safety and Environmental Engineering,2011(1):58-61.(in Chinese)
• [4]苏欣,许肖梅.厦门海域水下爆破中的冲击波监测与分析[J].厦门大学学报(自然科学版),2007(S1):25-27,88.[4]SU Xin,XU Xiao-mei.Shockwave monitoring and analysis of underwater explosion at Xiamen Harbor[J].Journal of Xiamen University(Natural Science),2007(S1):25-27,88.(in Chinese)
• [5]戴长冰,水丽,宋守志.水下爆破冲击波的特点分析与计算[J].水文地质工程地质,2002(4):24-25.[5]DAI Chang-bing,SHUI Li,SONG Shou-zhi.Research of the impulsive wave of underwater blasting[J].Hydrogeology and Engineering Geology,2002(4):24-25.(in Chinese)
• [6]陶明.水下钻孔爆破水击波衰减规律的研究[D].武汉:武汉理工大学,2009.[6]TAO Ming.Research of attenuation rule of the water shock wave effect for underwater drilling blasting[D].Wuhan:Wuhan University of Technology,2009.(in Chinese)
• [7]司剑峰.水下爆破冲击波理论分析及试验研究[D].武汉:武汉科技大学,2013.[7]SI Jian-feng.Theoretical analysis and test research on shock wave of underwater explosion[D].Wuhan:Wuhan University of Science and Technology,2013.(in Chinese)
• [8]王宏.水下钻孔爆破数值仿真研究[D].太原:中北大学,2014.[8]WANG Hong.Numerical simulation of underwater drilling blasting[D].Taiyuan:North University of China,2014.(in Chinese)
• [9]刘美山,吴新霞,张恒伟.混凝土水下爆破炸药单耗试验分析[J].爆破,2007,24(1):10-13,20.[9]LIU Mei-shan,WU Xin-xia,ZHANG Heng-wei.Expermiental analysis on specific charge of underwater explosion of concrete[J].Blasting,2007,24(1):10-13,20.(in Chinese)
• [10]李泉.几种水下钻孔爆破炸药单耗计算公式的分析与比较[J].爆破,2012,29(1):94-97.[10]LI Quan.Analysis and comparison of several calculation formulas of specific charge uunderwater drilling blasting[J].Blasting,2012,29(1):94-97.(in Chinese)
• [11]梁禹,吴立,左清军.长江航道水下炸礁工程炸药单耗优化研究[J].爆破,2012,29(2):95-98,106.[11]LIANG Yu,WU Li,ZUO Qing-jun.Optimizing research on explosive specific charge of underwater blasting engineering in Yangtze Waterway[J].Blasting,2012,29(2):95-98,106.(in Chinese)
• [12]李春军.中深孔爆破在水下深基坑开挖中的应用[J].中国水运,2012(9):253-254.[12]LI Chun-jun.Deep underwater blasting in deep foundation excavation[J].China Water Transport,2012(9):253-254.(in Chinese)
• [13]吴国群,张明晓,弓启祥,等.水下爆炸冲击波相互作用的研究[J].煤矿爆破,2011(2):12-15.[13]WU Guo-qun,ZHANG Xiao-ming,GONG Qi-xiang,et al.Study on the interaction of the shock waves in underwater explosions[J].Coal Mine Blasting,2011(2):12-15.(in Chinese)
• [14]闫国斌,于亚伦.空气与水介质不耦合装药爆破数值模拟[J].工程爆破,2009(4):13-19,65.[14]YAN Guo-bin,YU Ya-lun.Numerical simulation of air and water medium decoupling charge blasting[J].Engineering Blasting,2009(4):13-19,65.(in Chinese)
• [15]王爱兴.水下爆炸冲击波近区传播规律及防护方法研究[D].武汉:长江科学院,2010.[15]WANG Ai-xing.The study on the propagati on rule of shock wave that is neared explosive source in underwater explosion and its protection methods[D].Wuhan:Chang Jiang River Science Research Institute,2010.(in Chinese)