pembekalan ismc vii
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Explosives and Non Electric Up System
Pembekalan ISMC VII
Indralaya, 19 – 20 December 2009
Explosives and Non Electric Tie Up System
Explosives and Non Electric Up System
ExplosivesApa yang dimaksud dengan Explosives?Apa yang membuat explosive meledak? Apakah bahaya bekerja di sekitar Explosive?
Eksplosif adalah campuran bahan kimia yang dapat diubah dengan cepat (detonasi) dari padat ke cair…ke gas bertekanan/bertemperatur tinggi dalam volume besar
Explosives and Non Electric Up System
Segi Tiga ApiOxygenSupply
1 2
H eat /D etonationP ressure
3 4
Explosives and Non Electric Up System
Detonators
Explosives and Non Electric Up System
Types of Exel Detonators
Initiator or starter systemsSurface systemsIn-hole delay systems
Explosives and Non Electric Up System
InitiatorsLead-in Lines
• 150 meters
• 300 meters
• 500 meters
• *2800 meters
Explosives and Non Electric Up System
Lead In Lines150, 300 or 500 m of yellow signal tube (2800* m)
# 8 strength detonator in connector block
Fired by a mushroom starter kit /electronic starter
Can initiate signal tube or Cordtex
Can be used to initiate multiple blasts
Explosives and Non Electric Up System
Application of Lead In Lines
17
1 7
Explosives and Non Electric Up System
Surface SystemConnectadets
Millisecond Connector
Trunkline delay detonators
Cordtex - 3.6g, 5g
Explosives and Non Electric Up System
Exel Connectadet17m
s25
ms42
ms65
ms100
ms150
ms25
4.9
DA
NG
ER
OU
SE
XP
LO
SIV
ES
3.6 - 18m
Explosives and Non Electric Up System
Connectadet Block Capacity
DA
NG
ER
OU
SE
XP
LO
SIV
ES
6-tubes capacity
Explosives and Non Electric Up System
Exel ConnectadetLow strength detonator
Colour coded j-hook,connector block, yellow signal tube
3.6 to 18 m in coil or sleeve
Fires signal tube in both directions
Aligns tube (6 max) at right angles
Need not be buried
Explosives and Non Electric Up System
Boosters
Explosives and Non Electric Up System
BoostersMixture of PETN, TNT, barytes and NaNO3
Cylindrical with cord/detonator well
Sensitised by detonating cord
Initiated by detonating cord and Exel in-hole detonator
Used commonly with bulk explosives
Explosives and Non Electric Up System
TieUp SystemNonel DesignI kon DesignCombination of Nonel & I kon Design
1. V -Cut System2. Center Cut System3. Drop Cut System4. Echelon System5. Combination
Type of TieUp
Explosives and Non Electric Up System
V-Cut System
Explosives and Non Electric Up System
Center Cut System
Explosives and Non Electric Up System
Box Cut System
Explosives and Non Electric Up System
Echelon System
Explosives and Non Electric Up System
Combination System
Explosives and Non Electric Up System
PerhitunganSuatu area blasting dengan luas area 100m x 50m di pertambangan PT. Maju Tak Gentar memiliki karakteristik peledakan sebagai berikut dengan menggunakan jenis bahan peledak Fortis Eclips density 1,25 kg/m : Diameter Lubang Tamrock 311 mm Burden 8 m Spacing 7 m Bench height 16 m Hole depth 17 m Subdrill 1 m Steaming 6 m Buatlah rencana peledakan yang meliputi :Jumlah Explosives (Detonators, Connectadet, arah lemparan)
Explosives and Non Electric Up System
Pf = Jumlah Bahan Peledak = Kg / BCM Batuan Yang terbongkar
1. Lihat Table Blasthole Charge Weight ( D = 311 mm & density = 1,25 kg/m3)2. Tentukan Explosives Length ( Blasthole depth – Stemming length)3. Tentukan Explosives Mass ( 1 x 2)4. Tentukan Blast Volume per hole (Burden x Spacing x Bench Height)5. Tentukan Nilai PF ( 3 / 4)
Explosives and Non Electric Up System
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