Category of engineering blasting

(1) Blasting of infrastructure projects. Capital construction often requires a large number of earth and stone excavation tasks, such as mining and stripping of mines, excavation and damming of mines, excavation of plant foundations, excavation of roads and railways, excavation of underground works, and leveling of the site. The blasting method is done.
(2) Production and blasting of mines and quarries, including various types of ore and stone mining, etc. It is characterized by the collapse of rock ore must meet certain dimensional specifications or grading requirements to meet the needs of shipping, use and smelting. Generally divided into primary blasting and secondary blasting, one blasting is the main blasting work of mine production. Common blasting methods include shallow hole blasting, deep hole blasting and chamber blasting. Secondary blasting is auxiliary blasting of mine production. Holes and bare blasting methods.
(3) Demolition blasting is mostly used for engineering reconstruction, expansion and demolition. Its basic method is to arrange a small amount of explosives on the foundation of the building and the joints of the beams and columns. Under the action of blasting, the structure is unstable and the orientation and extent of its collapse are controlled. To ensure that adjacent buildings are protected from damage, it has the advantages of low cost, short construction period and high efficiency compared with other demolition methods.
(4) Underwater blasting, mainly used for channel dredging, port construction, bridge construction, reefing, soft foundation and other work. Most of them use underwater drilling blasting, underwater bare blasting and concentrated energy blasting. In addition, in the development of natural lakes and artificial reservoirs, underwater rock blasting methods are often used to penetrate the drainage tunnel. There are also seabed mining blasting and so on.
(5) Explosive processing. Explosive processing is a processing method that replaces traditional machining with explosives as an energy source. China has been researching and applying explosive processing technology since 1958. At present, there have been great developments, such as explosion molding, explosion cutting, explosion punching, explosive compounding, explosive welding, explosion riveting, explosion hardening, explosion engraving and other explosion processing methods. Used in various industrial sectors.
(6) Special engineering blasting, such as fracturing blasting in oil drilling, artificial blasting in seismic exploration, and nuclear blasting used in in-situ leaching mining.
With the rapid development of modern industry. Explosives, an inexpensive energy source and various blasting technologies, will be increasingly used in various industrial fields, and the types and uses of engineering blasting will continue to expand.