李科斌;李晓杰;闫鸿浩;王小红;易生泰;
LI Ke-bin;LI Xiao-jie;YAN Hong-hao;WANG Xiao-hong;YI Sheng-tai;Department of Engineering Mechanics,Dalian University of Technology;State Key Laboratory of Structural Analysis for Industrial Equipment;

• 1:大连理工大学工程力学系
• 2:工业装备结构分析国家重点实验室

摘要(Abstract)：

针对商用连续电阻丝探针在实际爆速测量过程中易出现间断、跳跃等波形不连续问题,通过理论推导和数值仿真,分析了产生此类杂波的若干原因:外界电磁波干扰、探针中空气冲击波与金属射流干扰。同时结合分析结果,提出了消除各类干扰因素的方法,即通过元件外壳接地和对整个测试电路进行严格的电磁屏蔽;采用压致导通原理代替原先的高温电离导通,改进探针结构和制作工艺,以消除金属射流与降低前驱空气冲击波的影响,最终构建了抗杂波干扰的新型压导探针连续爆速测试系统,测得了较为光滑的爆速曲线,提高了测试数据的准确性。
Some discontinuity problems such as gap and jump are rather frequent in an actual detonation velocity measurement with commercial continuous resistance wire probe.By theoretical derivation and numerical simulation,the cause of these noise waves are mainly analyzed,including electromagnetic interference from outside,internal air shock wave and metal jet interference.Besides,some improved methods are put forward in order to eliminate these influences based on the result.The device shell is earthed and the overall test circuit is shielded from electromagnetic wave.Then,using the principle of pressure conduction instead of the original high-temperature ionization,the probe working principle and the production technique are improved,which are able to eliminate metal jet and precursory shock wave.In the end,a new pressure conduction probe for continuous detonation velocity measurement with anti-noise wave is developed,and smooth detonation velocity curve is obtained,which means the test accuracy is improved.

关键词(KeyWords)： 爆速连续测量;杂波;电磁屏蔽;金属射流;管道效应;新型压导探针
continuous detonation velocity measurement;noise wave;electromagnetic shielding;metal jet;channel effect;pressure-conduction probe

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目(11272081,11672067)

作者(Authors): 李科斌;李晓杰;闫鸿浩;王小红;易生泰;
LI Ke-bin;LI Xiao-jie;YAN Hong-hao;WANG Xiao-hong;YI Sheng-tai;Department of Engineering Mechanics,Dalian University of Technology;State Key Laboratory of Structural Analysis for Industrial Equipment;

参考文献(References)：

• [1](.M.加拉奇,张军.爆速测定方法的改进[J].爆破材料,1967(2):36-38.(.M.ПлюсБлатч,ZHANG J.Method improvement of detonation velocity measuring[J].Blasing Material,1967(2):36-38.
• [2]赵敏.爆速的连续测定和爆痕的观测——炮孔内炸药的爆轰特性[J].煤矿安全,1990(2):58-61.ZHAO M.Continuous measurement of detonation velocity and observation of explosion trace:the detonation characteristics in blasthole[J].Safety in Coal Mines,1990(2):58-61.
• [3]章国升.炸药爆速的连续测定技术[J].爆破器材,1994,23(5):32-34.ZHANG G S.Continuous measuring technique of detonation velocity[J].Explosive Materials,1994,23(5):32-34.
• [4]陶林.煤矿许用炸药爆速变化对爆破安全性影响的研究[J].煤矿爆破,1995,28(1):1-6.TAO L.Study on the effect of detonation velocity ofpermitted explosive for coal mine on blasting security[J].Coal Mine Blasting,1995,28(1):1-6.
• [5]徐森,唐双凌,刘大斌,等.改性铵油炸药连续爆速实验研究[J].火炸药学报,2009,32(3):25-27.XU S,TANG S L,LIU D B,et al.Experimental study on continuous detonation velocity of modified ANFO[J].Chinese Journal of Explosives&Propellants,2009,32(3):25-27.
• [6]赵根,王文辉.孔内炸药连续爆速测试新技术[J].工程爆破,2008,14(3):63-66.ZHAO G,WANG W H.New measurement technology of continuous detonation velocity of explosive inblasthole[J].Engineering Blasting,2008,14(3):63-66.
• [7]BILGIN A,ESEN S.Assessment of explosive performance by detonation velocity measurements in Turkey[C].Mine Planning and Equipment Selection2000,CRC Press,2000:21-27.
• [8]PRADHA M N,JADE R K.Detonation behavior of bulk emulsion explosive in water filled blast holes[C]//Performance of Explosives and New Developments,Taylor&Francis Group,London,2013:65-70.
• [9]VENKATESH H S,ADHIKARI G R,THERESRAJ A I.Variability in velocity of detonation of commercial explosives as measured in field trials[J].Mining Technology,2008,117(1):6-11.
• [10]胡八一,刘仓理,刘宇,等.强电磁干扰环境下的爆炸容器动态应变测试系统.测试技术学报,2005,19(1):30-32.HU B Y,LIU C L,LIU Y,et al.Dynamic strain measuring system of explosive containment vessel under intense electromagnetic interference environment[J].Journal of Test&Measurement Technology,2005,19(1):30-32.
• [11]张从和,王军.爆轰条件下应变测量抗干扰技术研究[J].自动检测技术,2001,20(2):33-35.ZHANG C H,WANG J.Research on antiinterference technology for strain measurement under detonation circumstances[J].O.I.Automation,2001,20(2):33-35.
• [12]李晓杰,王金相,闫鸿浩,等.基于Laval喷管的圆管爆轰驱动近似解.工程爆破,2003,9(4):7-9.LI X J,WANG J X,YAN H H,et al.The approximate solution of pipe driven by detonation based on the theory of de laval nozzle[J].Engineering Blasting,2003,9(4):7-9.
• [13]北京工业学院八系.爆炸及其作用[M].北京:国防工业出版社,1979:329.Eighth Department of Beijing Institute of Industry.Explosion and its effect[M].Beijing:National Defence Industry Press,1979:329.
• [14]COURANT R,FRIEDRICHS K O.Supersonic flow and shock waves[M].Springer Science&Business Media,1999.