P5 EMULSION COMPOSITION FOR UNDERGROUND COALMINES AND OTHER EXCAVATION WORKS AND A PROCESS FOR PREPARING THE SAID EXPLOSIVE

摘要

This synergistic composition based on High strength P-5 emulsion explosive detonates in the diameter of 32 mm and 37 mm diameter. The velocity of detonation of the synergistic composition based on P-5 emulsion explosive was in the range of 3286- 3548 m/s. The explosion temperature of the synergistic composition was in the range of 1920 to 1990 degree Kelvin and its explosion energy 1650 to 1670 kJ/kg. The strength of the composition was 37 to 40 % of BG. The flame length and its duration play an important role in the ignition of methane air mixture and coal dust. Shorter the duration of detonation flame less chances of ignition in the methane air mixture and coal dust. The flame length and flame duration measured in P-5 compositions were in the range of 0.10 - 0.12 m and 9 - 12 ms respectively. This composition is safe in methane air mixture and coal dust. The P-5 explosive composition is useful for blasting in highly gassy underground coalmines and other excavation works is reliable cap sensitive in diameters 32 mm and 37 mm cartridges and can be detonated with No. 6 detonator. This emulsion based P-5 explosive composition of the present invention has high velocity of detonation and explosion energy and detonation pressure which does not damages the adjoining rocks and this product is most suitable for underground coalmines, construction of roads and other excavation works. The manufacturing process of this invention is safe and non-hazardous.