3.3MethodofdetonatingcordinitiationDetonatingcordDetonatingcordisanarrowcoreofsinglehighexplosiveHexogen?Oandpentaerythritetetranitrateenclosedinawovencover.ofpolymelyarnsandextrudedplasticsThe detonating cord' strong to initiate the commercial explosive, the circuit ofdetonating cord could initiate group charges,but it shouldbeignited by detonatofirstly. Tnis method is non-electric initiation method.CommondetonatingcordSafety detonating cordClassification ofOil well detonating corddetonating cordLead-antimony tube detonating cordSeismiccord122016/11/9第三章起爆器材与起爆方法
2016/11/9 第三章 起爆器材与起爆方法 12 Seismic cord Lead-antimony tube detonating cord Oil well detonating cord Common detonating cord Safety detonating cord Classification of detonating cord 3.3 Method of detonating cord Detonating initiation cord Detonating cord is a narrow core of single high explosive Hexogen and pentaerythrite tetranitrate enclosed in a woven cover of polymer yarns and extruded plastics. The detonating cord strong to initiate the commercial explosive, the circuit of detonating cord could initiate group charges, but it should be ignited by detonator firstly. This method is non-electric initiation method. 1 2 3 5 4
Detonating relayfunction andstructureDetonatingrelayThedetonatingrelayis usedcooperatively with detonating cordand having milliseconddelayfunction传爆方向(a)8(b)Detonating relay structurea Uni-directional relay;b Bi-directional relayation-subsidetube;22-biginnertube;3-outersleeve;4-delaycharges：5strengthprimaryexplosive;7--secondaryexplosive;8-detonating cord;9connectingtube?132016/11/9第三章起爆器材与起爆方法
2016/11/9 第三章 起爆器材与起爆方法 13 Detonating relay function and structure The detonating relay is used cooperatively with detonating cord and having millisecond delay function. Detonating relay Detonating relay structure a Uni-directional relay ； b Bi-directional relay detonation-subside tube；2—big inner tube；3—outer sleeve；4—delay charges；5—strengthen cap 6—primary explosive；7—secondary explosive；8—detonating cord；9—connecting tube
Initiation circuitofdetonatingcord (1)(a)(b)Parallel circuit of detonating cord(a)Parallel-bunch;（b）Segmentation-parallel-detonator;2-trunkline cord;3-downline cord4-in-holecord;5cartridg142016/11/9第三章起爆器材与起爆方法
2016/11/9 第三章 起爆器材与起爆方法 14 Initiation circuit of detonating cord（1） Parallel circuit of detonating cord （a）Parallel-bunch; （b） Segmentation-parallel 1—detonator； 2—trunkline cord； 3—downline cord； 4—in-hole cord； 5—cartridge
Initiation circuit of detonating(2)cordC8OR人.0.Series of detonating cordSegmentation-parallel of bi-direction2--trunklinecord;-detonator2detonatingcord;1-detonator;3cartridge3downlinecord;4initiatedcord;5cartridge152016/11/9第三章起爆器材与起爆方法
2016/11/9 第三章 起爆器材与起爆方法 15 Initiation circuit of detonating cord （2） Series of detonating cord 1—detonator； 2—detonating cord； 3—cartridge Segmentation-parallel of bi-direction 1—detonator； 2—trunkline cord； 3—downline cord； 4—initiated cord； 5—cartridge
Initiation circuit of detonating(3)cordFreefaceMS-delay in rowDetonating cord-detonating relay circuit1detonator 2detonatingrelay1detonator;2-detonatingcord;3detonating cord 4cartridge3bi-directional detonating relay 4cartridge162016/11/9第三章起爆器材与起爆方法
2016/11/9 第三章 起爆器材与起爆方法 16 Initiation circuit of detonating cord （3） MS-delay in row 1—detonator 2—detonating relay 3—detonating cord 4—cartridge Detonating cord- detonating relay circuit 1—detonator； 2—detonating cord； 3—bi-directional detonating relay 4—cartridge Free face