Rock drilling and blasting engineering

The difference between carbon dioxide blasting and explosive blasting is that carbon dioxide blasting is safe, environmentally friendly, and has no mute blasting or destructive vibration waves.

The difference between carbon dioxide blasting and explosive blasting

Carbon dioxide blasting does not produce new harmful gases, and the carbon dioxide level does not exceed the standard at a height of 1 meter.

Carbon dioxide blasting cannot be used in terrorist bombings and poses no threat to public security or society at all.

Carbon dioxide blasting belongs to silent blasting, with almost no sound or noise

Because of safety, environmental protection and efficiency, customers are relieved, the government is relieved and society is at ease.

The design of carbon dioxide blasting and guidance. The specifications and types of the pharmacy room: The volume of the pharmacy room is usually calculated by the following formula Q. V = Two Fan, (12-20)A, where: the amount of medicine in Cang Yi Jian Shao Room, t; A - Charge density, t/m; Kv- Pharmacy room expansion coefficient. When there is no support and bagged explosives in the explosive chamber, Kv=1.2-1.3; when there is support and bagged explosives in the explosive chamber, Kv=1.4. The shape of the medicine chamber is divided into two types: container loading and strip loading. The shape of the medicine chamber for container loading is generally square or rectangular. When the dosage of the medicine is large, the geological conditions are poor and the rocks are unstable, T-shaped, cross-shaped and square-shaped can be used, as shown in Figure 12-19. The strip-shaped medicine room adopts a flat alley. The height of the medicine room should not exceed 2.5 meters to facilitate the loading of medicine, and its width should be less than 5 meters to ensure the safety of the workers.

Carbon dioxide blasting and its type identification are the connection channels between the blast chamber and the surface, which are divided into two types: flat copper and small Wells. The ketone delivery and the drug chamber are generally connected by cross tunnels: the cross tunnels are usually perpendicular to the ketone delivery. The selection of the type of identification is mainly determined based on factors such as the topography and geological conditions of the explosion area, the location of the drug chamber, and the construction conditions. From the perspective of the schematic diagram of the shape of the medicine room in Figure 12-19 of Naxiaodu DDD(a)(b)(c)(a) circular shape: (b) T-shaped: (c) cross-shaped r, only the structural dimensions of the single medicine room: the width of the medicine room: from the perspective of convenient construction, it should be as flat as possible. When the terrain is relatively gentle or the scale of blasting is small, small Wells can be adopted. The selection of the opening location is based on the principles of convenient construction, safety and minimal engineering impact.