Explosive loading method, and detonation-use explosive mounting body
The use of an initiating explosive attachment with a conical guide and bundled leg wire addresses the inefficiencies in existing methods, enabling smooth and efficient explosive loading in tunnel blasting, enhancing operational efficiency and safety.
EP4310440B1Active Publication Date: 2026-06-03MAEDA CORP
Patent Information
- Authority / Receiving Office
- EP · EP
- Patent Type
- Patents
- Current Assignee / Owner
- MAEDA CORP
- Filing Date
- 2022-03-11
- Publication Date
- 2026-06-03
Smart Images
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Abstract
Provided is an explosive loading method that enables smooth loading of a detonation-use explosive into a blasting hole drilled into a working surface of a tunnel in a tunnel blasting process. This explosive loading method includes: a step in which a loading rod holds a detonation-use explosive mounted body as a result of inserting the distal end of the loading rod into a hollow section of the detonation-use explosive mounted body which is formed by mounting a detonation-use explosive on the inside of the rear end of a cylindrical holding body so that a hollow section remains; and a detonation-use explosive loading step in which the detonation-use explosive mounted body held by the distal end of the loading rod is loaded into the blasting hole. The front end of the cylindrical holding body of the detonation-use explosive mounted body is provided with a spindle-shaped guide part that has a shape which is tapered toward the distal end of the detonation-use explosive mounted body.
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