Blasting system and a method of explosive material charging

The blasting system with a detonator support device and resilient members addresses the challenge of securing explosive material in wet boreholes, ensuring safe and efficient charging across various orientations and lengths.

US20250244116A1Pending Publication Date: 2025-07-31LOUSSAVAARA KIIRUNAVAORA AB
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Patent Information

Application Number
US18/988544
Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
Priority Date
2020-10-22
Filing Date
2024-12-19
Publication Date
2025-07-31

AI Technical Summary

Technical Problem

Existing blasting systems face challenges in wet boreholes due to water pressure causing plugs or cartridges to be pushed out, leading to unsafe and time-consuming operations, and the need for a system that securely holds explosive material in various borehole orientations.

Method used

A blasting system with a detonator support device featuring a main body with a channel, an openable cover device, and resilient members that engage the borehole wall, combined with a backflow prevention valve, to securely hold explosive material in place while allowing water drainage, facilitating flexible and efficient charging.

Benefits of technology

The system ensures secure, efficient, and cost-effective explosive material charging in wet boreholes, maintaining adhesion to the borehole wall and preventing material loss, while allowing for different borehole orientations and lengths.

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Abstract

The invention concerns a blasting system (1) configured for explosive material charging in a borehole (3). The system (1) comprises a detonator support device (5) configured to be inserted into the borehole (3) by means of a charging hose (7); a main body (9) of the detonator support device (5) comprises a channel (8) oriented along a main body centre line (CL) extending along the borehole extension during said explosive material charging; an openable cover device (14) covering the channel (8) is configured to come into contact with the charging hose (7) in motion for pushing the main body (9) along the borehole (3), wherein the charging hose (7) in motion is configured to open the openable cover device (14) whilst a stopping arrangement (13) stops the main body (9).The invention also concerns a method of explosive material charging in a borehole (3) by means of the blasting system (1).
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