3.2Method ofplain detonator(Ordinarydetonators)initiationThe method of plain detonator initiation is the plain detonator detonationbymeansofasafetyfuse.Three parts of method of plain detonator initiation is safety fuse,plaindetonatorandignitionmaterial52364Plaindetonator1-capshell;2-flashhole;3-sealingcap;4-primercharge;5-basecharge;6-energycavity2016/11/9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 7 3.2 Method of plain detonator (Ordinary detonators) initiation The method of plain detonator initiation is the plain detonator detonation by means of a safety fuse. Three parts of method of plain detonator initiation is safety fuse, plain detonator and ignition material . Plain detonator 1- cap shell; 2-flash hole; 3-sealing cap; 4- primer charge; 5-base charge; 6- energy cavity
Plain detonatorShellStrengthenFlashholecapEnergyPrimarySecondaryexplosivecaveexplosive2016/11/9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 8 Shell Energy cave Plain detonator Secondary explosive Primary explosive Strengthen Flash hole cap
SafetyfuseThe safetyfuse is visually white, and its outer diameteris the range of5.2to5.8mm,thecoreloadis7~8g/m.theburningratesforfusesareinthe range of 100 to 125s/m.Forassuringinitiatetheplain detonator,theflaming of fuse is noless than 4Omm.The fuse should be no cutoff, firereveal, combustion of outershell,quick burningand deflagrationduring the combustion process. The burningrates and the performanceoffurs aretwoimportantmarks ofqualityThesafetyfuse shouldbeacertainmoistureproof and waterproof ability,theburning raters andperformance keep invariant after 4 hours in 1meter ndal temlperature4water.283-45-678Safetyfusestructure1-corewire;2-powdercore;3-innerwirelayer;4-mid-layer;5-waterprooflayer;6-scrip layer;7-outerwirelayer;8-dopelayerO2016/11/9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 9 Safety fuse Safety fuse structure 1-corewire; 2-powder core; 3-innerwire layer; 4-mid-layer; 5-waterproof layer; 6-scrip layer; 7- outerwire layer; 8-dope layer The safety fuse is visually white, and its outer diameter is the range of 5.2 to 5.8mm, the core load is 7~8g/m. the burning rates for fuses are in the range of 100 to 125s/m. For assuring initiate the plain detonator, the flaming of fuse is no less than 40mm. The fuse should be no cutoff, fire reveal, combustion of outer shell, quick burning and deflagration during the combustion process. The burning rates and the performance of furs are two important marks of quality. The safety fuse should be a certain moistureproof and waterproof ability, the burning raters and performance keep invariant after 4 hours in 1meter normal temperature water
Ignition materialsCDABIgnitionImaterialsignition cylinderigniter cordignition wirefirerod102016/11/9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 10 Ignition materials （ Ignition A B C D materials ）
Constructiontechnology of plaindetonatorinitiationMaking of plain detonatorMakingofigniting primer cartridge-C Construction technology during ignition process1.when soloigniting,the number(groups)of fuseignited by oneperson: no more than 5 under ground blasting, and no more than10 inopenblasting2.thelengthof safetyfuseshouldassurethepersonnelremoveto safety place after igniting all of fuse,but the shortest shouldshouldn't shorterthan1.2m.3.the checker justenter into the blast site aftermorethan5minfrom the last charge detonation.4.if it can't affirm existing misfire, the checker could enterthe2016hlast site after 15min .11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 11 Construction technology of plain detonator initiation A Making of plain detonator B Making of igniting primer cartridge C Construction technology during ignition process 1. when solo igniting, the number (groups) of fuse ignited by one person: no more than 5 under ground blasting, and no more than 10 in open blasting. 2. the length of safety fuse should assure the personnel remove to safety place after igniting all of fuse, but the shortest should shouldn’t shorter than 1.2m. 3. the checker just enter into the blast site after more than 5 min from the last charge detonation. 4. if it can’t affirm existing misfire, the checker could enter the blast site after 15min