Open-air step blasting blasthole explosive energy homogenization device and charging method

Abstract

The invention discloses an open-air step blasting blasthole explosive energy homogenization device and charging method. The open-air step blasting blasthole explosive energy homogenization device comprises an upper explosive energy homogenization cylinder and a lower energy homogenization cylinder which are arranged at the upper end and the lower end of a blasthole charging section correspondingly; the upper explosive energy homogenization cylinder constitutes an upper explosive energy homogenization structure through a conical cover of a container structure, and the lower energy homogenization cylinder constitutes a lower explosive energy homogenization structure through a cone table cylinder of a container structure; the large ends of the conical cover and the cone table cylinder are oppositely arranged; and preferably, the two homogenization cylinders are both provided with guiding cylinders. The charging method is carried out based on the device, and the upper explosive energy homogenization cylinder and the lower energy homogenization cylinder each of the container structure cover the two ends of a grain. The open-air step blasting blasthole explosive energy homogenization device and charging method have the beneficial effects that optimal distribution and utilization of explosive energy can be achieved without changing a charging structure, and the problems of open-air medium-deep hole step blasting orifice large blocks and tight bottoms can be effectively solved; and the device is simple in structure, the charging method is convenient to operate, and the constructionefficiency is high.

Description

technical field [0001] The invention belongs to the technical field of engineering blasting, and in particular relates to an energy homogenizing device and charging method for explosives in open-air step blasting blastholes. Background technique [0002] At present, the open-pit blasting is mainly based on the medium and deep hole step blasting method. There are two traditional charge structures, namely continuous charge and interval charge, but continuous charge is the most common. Explosive explosion is a high-temperature, high-pressure, and high-speed instantaneous process, and rock fragmentation mainly depends on the thrust and wedge action of the detonation gas expansion pressure. Practice has shown that the traditional continuous charge structure often produces quality problems such as too many orifice blocks and foundations, and even a large area of ​​the bottom plate (two-story platform). For the problem of large orifice, the current solution is to increase the unit...

AI Technical Summary

Problems solved by technology

For the problem of large orifice, the current solution is to increase the unit consumption of explosives or drill shallow holes in the middle of the four blastholes; for the problem of the lower root, the solution is to increase the super depth. Obviously, the solution for the large orifice and the root To a certain extent, the cost and construction amount have been increased. In view of this, the ZL201410482088.5 patent has announced a method for blocking the blast hole. Although the above problems can be eliminated to a certain extent, the operation is relatively cumbersome.

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