Carbon dioxide blasting is a highly efficient equipment for rock splitting and quarrying as an alternative to explosives

　　Carbon dioxide blasting is a highly efficient method for rock splitting in quarrying, serving as an alternative to explosives.

　　The carbon dioxide blasting equipment is equipped with a filling passage on the filling head that leads to the main pipe filling chamber, as well as a push rod for opening and closing the filling passage. A pressure relief passage is set on the pressure relief head, one end of which leads to the main pipe filling chamber, and the other end leads to the outside of the carbon dioxide extractor. A pressure relief diaphragm is installed between the pressure relief passage of the pressure relief head and the main pipe filling chamber for sealing. A heating device is installed inside the main pipe filling chamber. The pressure relief diaphragm of the carbon dioxide blasting equipment ruptures when the heating device heats the liquid carbon dioxide filled in the main pipe filling chamber, causing it to vaporize and expand to a certain pressure. This utility model of carbon dioxide blasting equipment can replace the commonly used pipe charges and explosives in mine mining, avoiding gas explosions caused by open flames and ensuring safe mine production. It can also pre-crack the coal body during gas extraction, effectively increasing the permeability of the coal seam and improving the efficiency of coal seam gas extraction.

　　Calculation formula for carbon dioxide blasting rock breaking: Based on this, the volume, height, and throwing rate of the accumulation can be estimated. Section 3. Charge Design According to the specific conditions of area A and the requirements of rock breaking, the charge design and quantity selection are carried out, which is the key to the chamber blasting design. ... (1) Design Task Book The design task book is a formal document for the formal planning and approval of the project, mainly including the location, project name, project scale, engineering quantity, investment amount, technical and progress requirements, and main technical and economic indicators. (2) Topographic and geological data of carbon dioxide blasting rock breaking: Generally, a 1:500 blasting area topographic map, a 1:1000 or 1:2000 geological topographic map, a location map of ground and underground buildings near the blasting area, engineering geology and hydrogeology, meteorology, and earthquake-related data and maps are needed. (3) Experimental and testing data: such as explosive performance, detonator materials and detonation network experiments, detection data, and small-scale blasting simulation data, etc. II. Charge Placement.

　　Basic requirements for carbon dioxide blasting rock breaking: (1) It should meet the requirements of the engineering blasting crushing range without over-excavation or under-excavation; (2) It should meet the engineering requirements for the blasted rock pile and the amount of throwing; (3) It should meet the engineering requirements for the throwing direction, throwing distance, and accumulation conditions; (4) Slopes, buildings, structures, and underground facilities should be well protected and not damaged; (5) It should ensure a reasonable block size distribution and blasting quality according to the engineering requirements, and save explosives and other blasting materials; (6) Ensure blasting safety. III. Charge Placement Planning Before specifically determining the location and parameters of each charge, an overall plan for the blasting area should be made for carbon dioxide blasting rock breaking. The main contents and considerations are: 1. The scale of the charge and arrangement The scale of the charge should be determined according to the topographic and geological conditions and the requirements of the blasting, and should consider safety and overall technical and economic effects. The currently used charge scale in China is suitable for the most difficult resistance lines of 5-50m. When the topographic conditions are suitable, the blasting range is not large, and the blasting and throwing amount is not large, single-row charges should be used as much as possible; when the topographic conditions limit the use of single-row charges to meet the requirements of blasting volume and blasting range, double-row or multi-row charges should be considered.