A peripheral optical surface blasting bulk charge device and blasting method

By utilizing the perimeter-view blasting integral charging device and the sealed joint design of the fixed ring and the shaped charge tube, the problems of low initiation reliability and complex charging of existing shaped charge blasting technology have been solved. This has enabled long-distance continuous sympathetic detonation without detonating cord, reducing costs and improving the blasting effect in tunnel construction.

CN117249736BActive Publication Date: 2026-06-09TAIYUAN UNIVERSITY OF TECHNOLOGY +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
TAIYUAN UNIVERSITY OF TECHNOLOGY
Filing Date
2023-08-25
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing shaped charge blasting technology suffers from problems such as low initiation reliability, complex charging process, high cost, difficulty in ensuring coaxiality of the charge cartridge, and poor blasting effect, which limits its application, especially in fractured water-bearing rock formations.

Method used

The device employs a perimeter-view blasting integral charging device, including a fixing ring, a shaped charge structure, and a shaped charge tube. The joints are sealed by sealing components to achieve long-distance continuous sympathetic detonation without detonating cord. The shaped charge shroud forms a high-speed jet, ensuring coaxial loading of explosives and simplifying the charging process.

Benefits of technology

It enables long-distance continuous sympathetic detonation without detonating cord, simplifies the charging process, reduces costs, improves blasting effect and charging quality, and is suitable for tunnel construction under complex geological conditions.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present application relates to a kind of peripheral eye light surface blasting bulk charge device and blasting method.Charging device includes multiple fixed rings, multiple shaped charge structures, shaped charge pipe and explosive, shaped charge pipe includes two cross-sections for half circular annular shaped charge half shells, two shaped charge half shells are mutually butted, and two side seams are closed connection by sealing element, shaped charge structure includes positioning ring and hollow cone-shaped shaped charge cover fixed in the one end of positioning ring, multiple shaped charge structures are fixed between the both ends in the inside of shaped charge pipe, and the tip of shaped charge cover is all towards the one end of shaped charge pipe, fixed ring is provided between any adjacent two shaped charge structures, and the fixed ring is formed between shaped charge cover and close to it Medicine groove, explosive is loaded in medicine groove.Advantages: can realize no detonating cord long-distance continuous sympathetic detonation, can effectively prevent water and foreign matter into shaped charge pipe and cause to extinguish, can realize the shaped charge effect of blasthole connecting direction, can reach the effect of light surface blasting, whole design construction time is short, effectively reduce cost.
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