CO2 rock blasting system - GIF

[ToolTalkBot]

CO2 rock blasting system.




Previously:

CO2 pipe freezing clamp - GIF
Blasting a pipe trench - GIF
Blasting a pipeline ditch - GIF
Pipeline rock blasting - GIF

[BuffaloJohn]

Had to look this one up:

from:
https://www.miningdoc.tech/2024/11/1...g-system-work/

CO2 rock blasting, also known as carbon dioxide rock breaking or gas expansion cracking, is a technique used for rock excavation and breaking in various applications, including mining, quarrying, and construction projects. It is an alternative to traditional methods such as explosives or mechanical methods like drilling and hammering. The following describes how to use the CO2 rock blasting system.


This technology utilizes the physical principle of liquid carbon dioxide absorbing heat, gasifying and expanding in volume. After chemical heating, liquid carbon dioxide instantly turns into gas, expands in volume more than 600 times, and is released instantly, thereby breaking the rock.

The steps of rock blasting using CO2 system

Drill holes: first, holes are drilled into the rock formation in a predetermined pattern and spacing. The drilling diameter is 130-140mm; the drilling depth is 6-8m; it depends on the specific construction requirements.

Fill with carbon dioxide: use the carbon dioxide filling system to inject high-pressure liquid carbon dioxide into the rock-breaking steel pipe. The carbon dioxide used is usually in a supercritical state, ie above its critical temperature and pressure.

Put the pipes into the holes: use an excavator to hoist the rock-breaking steel pipe into the hole and place it at the bottom of the hole.

Plug the holes: plug the hole with soil or gravel. The tighter the blockage, the better the blasting effect.

Connect wire: connect wires in parallel or in series.

Detonate: connect the main line to the detonator and detonate.

[Floradawg]

There must be advantages over blasting, or they wouldn't use it, but it sure doesn't seem as simple.

[BuffaloJohn]

There must be advantages over blasting, or they wouldn't use it, but it sure doesn't seem as simple.

Look at the article at the link I posted above. There is a comparison or CO2 to dynamite, including pros and cons and a conclusion.

CO2 blasting isn't for everywhere and dynamite has specific advantages as the article says...