A method of waterproofing the end of a plastic detonating cord

Abstract

The invention discloses a waterproof method for a plastic detonating cord end. The waterproof method includes: (1), polishing the surface of the plastic detonating cord end; (2), coating the plastic detonating cord end with epoxy resin; (3), coating glass glue in a cable wiring cap, inwards inserting the plastic detonating cord end into the cap, and naturally placing for 24h; (4), uniformly smearing a sealant on a polished portion of the remaining surface, close to the end and exposed outside the cable wiring cap, of a plastic detonating cord, and sleeving a two-wall heat shrinkable sleeve; (5), putting the two-wall heat shrinkable sleeve on wax flame for baking to enable the same to shrink to be closely bound with the plastic detonating cord; (6), using an insulating adhesive tape to wind the plastic detonating cord end; (7), adopting a waterproof adhesive tape to wind an outer layer of the insulating adhesive tape. The waterproof method is highly targeted; by adopting the waterproof method for blasting operation when water pressure is high and water depth is high, the plastic detonating cord can still normally detonate explosive under action of the water pressure after being soaked in water within seven days; the waterproof method is simple and convenient in construction, good in waterproof effect and low in cost and can fully ensure the plastic detonating cord to be capable of safely detonate the explosive so as to guarantee safety and effectiveness of blasting operation.

Description

technical field [0001] The invention relates to a waterproof method for the end of plastic detonating cord used in underwater blasting operations, in particular to a method for waterproofing the end of plastic detonating cords used in underwater blasting operations, in order to ensure that the plastic detonating cords can still be protected under water pressure. Normally detonating explosives, need to carry out the waterproof method of the plastic detonating cord end of plastic detonating cord end waterproof treatment. Background technique [0002] When blasting underwater, it is often necessary to use plastic detonating cords to detonate explosives. After the conventional plastic detonating cords are produced by the manufacturer, they are transported to the site for use. After the end of the detonating cord is soaked in water, it is easy to lose its original effectiveness, and its performance cannot be guaranteed, which will affect the detonation effect of the plastic deton...

AI Technical Summary

Problems solved by technology

[0002] When blasting underwater, it is often necessary to use plastic detonating cords to detonate explosives. After the conventional plastic detonating cords are produced by the manufacturer, they are transported to the site for use. After the end of the detonating cord is soaked in water, it is easy to lose its original effectiveness, and its performance cannot be guaranteed, which will affect the detonation effect of the plastic detonating cord detonating explosive, thereby affecting the safe blasting of the explosive, and may cause the explosive to be underwater. Unable to explode according to the predetermined requirements, resulting in potential safety hazards