The difference between carbon dioxide blasting and explosive blasting is that carbon dioxide blasting is safe, environmentally friendly, and free of dud shots and destructive shock waves.

　　Rock blasting engineering

　　Difference between carbon dioxide blasting and explosive blasting: Carbon dioxide blasting is safe, environmentally friendly, without misfires, and without destructive shock waves.

　　Difference between carbon dioxide blasting and explosive blasting

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

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

　　Carbon dioxide blasting is a silent blasting method, with almost no sound or noise.

　　Because of its safety, environmental friendliness, and efficiency, it saves customers, governments, and society worry.

　　Carbon dioxide blasting and the design of the blasting chamber. The specifications and type of the blasting chamber. The volume of the blasting chamber is usually calculated by the following formula Q. V = (12-20) A In the formula: 仓一健芍室的装药量，t; A–装药密度，t/m,; Kv-药室扩大系数。药室无支护和袋装炸药时，Kv=1.2-1.3：药室有支护和袋装炸药时，Kv=1.4. The shape of the blasting chamber is divided into two categories: centralized charging and strip charging. The shape of the blasting chamber for centralized charging is generally square and rectangular. When the charge is large, the geological conditions are poor, and the rock is unstable, T-shaped, cross-shaped, and square shapes can be used, as shown in Figure 12-19. The strip blasting chamber uses a single flat tunnel. The height of the blasting chamber should not exceed 2.5m to facilitate charging; its width should be less than 5m to ensure the safety of the blasting operation.

　　Carbon dioxide blasting and its types. The blasting chamber is the connecting passage between the blasting chamber and the ground surface, and is divided into two types: flat and small well. The blasting chamber is generally connected to the blasting chamber by a cross-tunnel; the cross-tunnel is generally perpendicular to the blasting chamber. The selection of the blasting chamber type mainly depends on the terrain, geological conditions, blasting chamber location, and construction conditions of the blasting area. 图12-19药室形状示意图(a)回形：(b)T形：(c)十字形r唯专室结构尺寸：合一药室宽度：From the perspective of construction convenience, flat blasting chambers should be used as much as possible. In areas with gentle terrain or small blasting scale, small wells can be used. The selection of the blasting chamber location should be based on the principles of construction convenience, safety, and engineering minimization.