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《EXPLOSION AND SHOCK WAVES》 1997-03
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THE BLASTING EFFECT AT THE END OF A LINEAR CHARGE

Yang Nianhua(Chian Academy of Railway Science,Beijing,100081)  
The decline laws of the peak particle velocity at diffrernt parts of a linear charge are obtained by a series of model tests and digital modeling calculations.It is discovered that the peak particle velocity at the end decreases slowly with the angle α .The angle α is the angle of the axis with the linear charge. The longer the distance to the axis of a linear charge is ,the larger the end action range.When the length of a linear charge is shorter than 1.75 times of the burden,it does not character as a standard linear charge.A calculation formula for adding explosive weight at the ends of a linear charge is proposed on the basis of these decline laws in this paper.Adding explosive weight at the ends may improve the blasting effect.
【CateGory Index】: TD235.1
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【References】
Chinese Journal Full-text Database 2 Hits
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【Co-citations】
Chinese Journal Full-text Database 10 Hits
1 QIAN Yue-hong,TANG De-gao,LIU Ji-jun,JIANG Peng-fei,QU Xia(Engineering Institute of Corps of Engineers,PLA Univ.of Sci.&Tech.,Nanjing 210007,China);Numerical Simulation of the Effects of Spall-resistant Steel Panel for Underground Structure under Impulsive Loads[J];Chinese Journal of Underground Space and Engineering;2007-06
2 WANG Hai liang, FENG Chang gen, WANG Li qiong (School of Mechano Electronics Engineering, BIT, Beijing 100081, China);Study on on Site Experiment of Explosion Cavity in Soil[J];Chinese Journal of Explosives & Propellants;2001-02
3 LIU Zhi-jian, ZHANG Zheng-jie, ZHANG Kuan-hu (Xi′an Modern Chemistry Research Institute, Xi′an 710065, China);Tests and Calculation for Explosive cavities[J];Chinese Journal of Explosives & Propellants;2001-04
4 JIN Qian-kun(School of Software,Beijing Institute of Technology,Beijing 100081,China);Simulation of Cylindrical Shell Damage by Fragments and Shock Waves[J];Acta Armamentarii;2006-02
5 LIAO Wei-zhang, DU Xiu-li, ZHAO Mi, LI Li-yun (Beijing Key Lab of Urban Security and Disaster Engineering(Beijing University of Technology), Ministry of Education, Beijing University of Technology, Beijing 100022, China);An Algorithm of the Non-linear Dynamic Analysis of Open System[J];Journal of Beijing University of Technology;2006-02
6 LIAO Wei-zhang,DU Xiu-li,TIAN Zhi-min (1.The Key Laboratory of Urban Security and Disaster Engineering(Beijing University of Technology),Ministry of Education, Beijing 100022,China;2.The Engineering Design & Research Academy of Canbao,Beijing 100850,China);Numerical Simulation Methods on Dynamic Response of Partially-buried Structure Under Blast Loading[J];Journal of Beijing University of Technology;2007-02
7 LIN Da chao, BAI Chun hau, ZHANG Qi (National Key Laboratory for the Prevention and Control of Explosion and Disasters, Beijing Institute of Technology, Beijing100081, China);Amplitude Characteristics of Vertical Ground Surface Vibration Caused by Explosion Seism[J];Journal of Beijing Institute of Technology;2001-02
8 ZHANG Yu ming, BAI Chun hua, ZHANG Qi, LIN Da chao, ZENG De bin (National Key Laboratory of the Prevention and Control of Explosion Disasters, Beijing Institute of Technology, Beijing100081, China);Comparing Experimental Research on the Effect of Explosive Characteristic upon the Amplitude of Explosion Seismic Wave[J];Journal of Beijing Institute of Technology;2001-06
9 LUO Ai-min, ZHANG Qi, LI Jian-ping, BAI Chun-hua(State Key Laboratory for the Prevention and Control of Explosion Disasters, Beijing Institute of Technology, Beijing100081, China);Computational Analysis of Dispersion Process of Explosively Driven Solid Fuel[J];Journal of Beijing Institute of Technology;2005-02
10 FAN Xi-sheng,BAI Chun-hua,LI Jian-ping,ZHAO Yong-tao (State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology,Beijing 100081,China);Simplified Calculations of the Crushing Distance of Reinforced Concrete Slabs Under Explosion[J];Transactions of Beijing Institute of Technology;2006-04
【Co-references】
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1 Yan Shilong; Jin Xiaogang(Huainan Institute of Technology,Anhui 232001,China) (South Institute of Fluid Physics, Laboratory for Shock Wave, Wave and Detonation Physics Research,Chengdu 610003, China);Particle Velocity Measured of the Clindric Charge Exploding in PPMA[J];JOURNAL OF UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING;1999-03
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7 Tan Zhouying; Zhang Jianguo( Faculty of Resources and Environment, Guangxi University, Nanning 530004 Zhangqinggang Pit of Mine Branch, Great Wall Aluminum Products Corporationof China, Zhengzhou 450041 );Study on the Relationships Between Boulder Yield(BY) and Borehole Blasting Parameters in Open Pits[J];BLASTING;1999-04
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【Secondary References】
Chinese Journal Full-text Database 7 Hits
1 LOU Xiao-ming1,ZHENG Jun-jie1,MA Jian-jun2,CAI Lu-jun2(1.School of Civil Eng.& Mechanics,HUST,Wuhan 430074,China;2.Wuhan University of Science and Technology,Wuhan 430081,China);Study on Millisecond Blasting Vibration Velocity and Stress Field in Tunnel[J];Chinese Journal of Underground Space and Engineering;2008-02
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7 XU Gang, LIU Quan-ming(Tiandi Science & Technology Ltd., Co., Beijing 100013, China);Research on Non-coupling Charging Coefficient in Softening Hard Roof with Deep-hole Blasting[J];Coal Mining Technology;2009-01
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