In open-air blasting operations in Fujian Province, gas spacers are used to save explosives

Application scope 1. Deep hole blasting in open-pit mine blasting projects
If the diameter of the blast hole is more than millimeters and the deep hole is more than meters, the bottom or middle interval can be used, and the interval length is a continuous column. Loaded~.
2. The main function is to reduce the unit consumption of explosives, reduce shock and waterproofing, reduce the foundation and reduce the explosion pressure in the blast hole, use uncoupled charging technology to impact and crush the ore rock, expand the scope of the fracture zone, and improve the effective use of explosive blasting energy. rate, thereby reducing the unit consumption of explosives. save costs. , its working principle is as follows: The shock wave generated by the explosive explosion is reflected in the blast hole to generate a second strain wave, so that the crack network around the blast hole expands before the gas is pressurized. Although the gas pressure generated by the explosion will be reduced, under the repeated action of a series of aftershocks, the shock wave's action time on the rock is doubled, which increases the degree of rock fragmentation. The air spacing technology in cavity blasting includes hole bottom spacing, middle spacing, top spacing, and uncoupled spacing. 3. Blasting effect and analysis After blasting, the blast pile shape is loose, the surface of the ore blocks is relatively uniform, there are fewer large blocks, and the eyebrow lines after blasting are neat.
Main features.
*The product is suitable for both dry holes and water holes, which is beneficial to improving production efficiency.
*The unique design patented by the country ensures the reliability of deflation of aerosol cans
The direct benefit of using air spacers is to save explosives and reduce the unit consumption of explosives. The following are the various differences
A list of the amount of explosives saved by air spacers with apertures
How to use (picture)
The first step is to disassemble the traction rope, straighten it out, and then determine the depth in meters on the traction rope, see the picture< br/> In the second step, press the release valve of the spacer and quickly put it into the blast hole until it reaches the depth mark, as shown in the picture.
In the third step, shake the traction rope back and forth with your hand until you feel the traction. When the rope can no longer be pulled and the spacer has expanded to the point where it will not fall, you can put down the traction rope as shown in the picture
The fourth step is to charge, fill, blast and other operations on the blast hole. See picture
Product specifications
Model
Height
Stretch folding diameter
Stretch diameter
Scope of application

Blasting hole

, blast hole

, blast hole

,, blast hole

,,, blast hole

/>Performance indicators
Meet/relevant requirements, the main technical performance indicators are
, gas weight loss rate of gas storage tank
, air permeability of double-layer sealed air bag
, blast hole The static load strength of the spacer after it is inflated
, the time from the opening of the spacer deflation valve to the expansion of the airtight air bag to the blast hole wall, the time for the spacer to reach its rated static load strength (pressure) in the blast hole.
⊙The aerosol liquid filled in the tank is non-flammable and non-explosive
, which improves the safety of product transportation, storage and use. This product has a validity period of three months from the date of production