A Lighting System For High Speed Photography Of Underground Blasting

Frank E. Holden

doi:10.1117/12.975538

1 September 1987 A Lighting System For High Speed Photography Of Underground Blasting

Frank E. Holden

Proceedings Volume 0674, 17th Intl Congress on High Speed Photography and Photonics; (1987) https://doi.org/10.1117/12.975538
Event: 17th International Conference on High Speed Photography and Photonics, 1986, Pretoria, South Africa

Abstract

High speed photography is used to assist research into the fundamentals of blasting in underground gold mining stopes. A suitable lighting system has been developed for use underground. Two or more banks each comprising twenty flash bulbs are positioned within 3 m of the blast. Using a remote flash-sequencer, the flashes are fired with millisecond accuracy. The flash-sequencer is microprocessor-based, is safe and reliable, and offers a wide selection of illumination levels. Illumination levels of 28 x 10⁶ lumen-seconds are easily obtained, and can be exceeded. The lighting system is battery powered, portable, and able to withstand rigorous underground conditions. The system has enabled illumination of over 20 test blasts, and will be used extensively in future underground blasting investigations.

Citation Download Citation

Frank E. Holden "A Lighting System For High Speed Photography Of Underground Blasting", Proc. SPIE 0674, 17th Intl Congress on High Speed Photography and Photonics, (1 September 1987); https://doi.org/10.1117/12.975538

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