A roadway profile professional drug roll and its production method

Abstract

The invention discloses a special cartridge for a laneway outline and a production method of the special cartridge. The special cartridge comprises an antistatic cartridge case and emulsified explosive, wherein the antistatic cartridge case is a thin-wall cylinder; one end of the thin-wall cylinder is sealed and the other end of the thin-wall cylinder is opened; the thin-wall cylinder is filled with the emulsified explosive through one open end; a cylinder wall of the thin-wall cylinder is provided with two groups of energy releasing gaps along the longitudinal direction; the two groups of energy releasing gaps are symmetrically distributed along the radial direction of the thin-wall cylinder; each group of energy releasing gaps comprise a plurality of gaps which are not communicated with one another and are collinear, and the gaps have wide inside and narrow outside. The gaps, which are not communicated with one another, are used as the energy releasing gaps, so that explosion energy can be collected better and the better laneway outline is obtained.

Description

technical field [0001] The invention relates to directional fracture blasting, in particular to a roadway profile professional medicine roll and a production method thereof, belonging to the field of engineering blasting construction. Background technique [0002] In coal mining, based on the principle of "simultaneous mining and excavation first", the problem of production replacement is often faced, and the speed of rock roadway excavation often becomes the main restrictive factor. The drill and blast method has been widely used because of its strong applicability, easy operation and low cost. According to statistics, nearly 95% of the rock roadways in coal mines in the country are constructed by the drill and blast method. The key to the construction speed of the rock roadway drilling and blasting method lies in the cutting, and the key to the quality lies in the surrounding area. Therefore, eye blasting around the roadway has become a key link in roadway excavation. At...

AI Technical Summary

Problems solved by technology

At present, most of the rock roadways adopt the ordinary smooth blasting method, the blasting semi-eye mark rate is not high, the roadway over-excavation or under-excavation phenomenon is obvious, the blasting effect and blasting quality are not good, resulting in serious damage to the surrounding rock of the roadway and difficult support, which in turn affects The driving speed of the roadway and the stability of the surrounding rock of the roadway

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