Double-medium decoupling fracture damage blasting control method and auget

Abstract

The invention relates to a method for controlling blasting by double-medium decoupling fracture and damage and a blasting cartridge thereof. The method adopts cylindrical explosive, detonator or primacord to explode a hole on a blasted rock body. The method is characterized in that water and air are simultaneously used in the hole to separate explosive, wherein, the water medium is aligned to the side of a free surface, while the air medium is aligned to the side of a reserved surface; the uniform distributing state of explosive energy can be changed by using the characteristics that the two media have different efficiencies of transmitting energy, thereby achieving the function of completely destroying one side and protecting the reserved surface during blasting, and forming a flat fracture surface. The blasting cartridge consists of an outer tube, an inner tube and a separating wall, wherein, the separating wall separates a cavity formed between the outer tube and the inner tube into a medium chamber for containing the water medium and a medium chamber for containing the air medium; and an explosive chamber for placing the cylindrical explosive is arranged in the inner tube. The invention has the advantages of easily operating, improving explosive power and agglomerating rate, protecting stability of wall rock, reducing harm of dust and noise, and the like, and can be widely applied to smooth blasting projects such as tunnels, side slopes, water conservancies, mining, and the like.

Description

technical field

[0001] The invention belongs to the technical field of blasting engineering, in particular to a blasting method and device for controlling the blasting section by utilizing the principle of double-medium non-coupling fracture damage. Background technique

[0002] With the development of the economy, controlled blasting has been more and more widely used in projects such as railways, mines, water conservancy, construction, and transportation. With the development of modern engineering blasting technology, people's requirements for engineering blasting are getting higher and higher. How to precisely control the location and development direction of cracks during blasting, how to precisely control the formation of fracture surfaces, and how to obtain a relatively smooth excavation surface and reasonable blasting fragmentation are attracting more and more researchers' attention. Especially in some special projects, such as the cutting and mining of precious ston...

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