Causes, treatment methods and preventive measures for various explosions during blasting

The causes, treatment methods and preventive measures of various types of explosion prevention are shown in Table 1.
Table 1 Causes, treatment methods and preventive measures for various types of explosion prevention

Detonation type cause Approach Precaution
Partial explosives refused to explode (1) Explosives are damp; (2) There is rock powder separated, affecting the explosion (1) flushing out the explosive with water; (2) removing the drug pack (1) Waterproof or wet blastholes must be waterproofed; (2) Purge the blastholes before charging
The detonator exploded and the explosives all refused (1) Deterioration or dampness of explosives; (2) Insufficient detonation force of detonator; (3) Detonation of detonator from drug pack (1) Remove the blockage and reinstall the explosive charge to detonate; (2) If it is a powdery drug, flush out the blockage and explosive with water, and recharge the charge. (1) Strictly inspect the blasting materials and take care of them; (2) Waterproof or wet blastholes must be waterproofed; (3) Detonators and packs in the primer should be tied
Detonators, detonating cords and explosives are all rejected Electric detonator detonation (1) The quality of the electric detonator is unqualified; (2) The fuse is not cut neatly, the flame does not pass the detonator of the detonator or the detonator and the fuse are left; (3) the fuse is inadvertently injured; (4) Missing ignition (1) carefully take out the blockage and reinstall the detonation kit to detonate; (2) carefully remove some of the blockages, reinstall the detonation kit, and detonate (3) detonate with electric detonators and detonating cords. The blasthole can be re-initiated and detonated; (4) A parallel blasthole is drilled at a certain distance from the blasthole (the shallow eye is not less than 0.3 m, and the open-air deep hole is not less than 2 m). (1) Tightly connect the fuse to the fire tube; (2) Put the fuse against the hole wall when charging, disable the gun stick mammoth (3) Be calm and careful when igniting, mark the ignition sequence and Number of shots
Electric detonator detonation (1) The quality of the electric detonator is unqualified; (2) The electric blast network is not suitable for the detonation condition; (3) The line connection is wrong, the joint is in poor contact, and the line is grounded. (1) The electric blast network must meet the requirements for permitting detonation conditions; (2) Be careful when carefully connecting the network, and carefully check after connecting.
Detonating cord (1) The quality of the detonating cord is unqualified; (2) The detonating cord network is connected incorrectly; (3) The shock wave and the flying stone destroyed by the first burst of the detonated cord (1) The connection line should be careful and the connection method should be correct; (2) The detonating cord of the deferred detonation should be strengthened to avoid damage caused by the first impact.

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