An innovative scaled model to simulate the perimeter hole blasting in tunnel
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Authors
Jang, Hyong Doo
Yang, H.
Kim, W.
Rai, P.
Date
2010Type
Conference Paper
Metadata
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Jang, H. and Yang, H. and Kim, W. and Rai, P. 2010. An innovative scaled model to simulate the perimeter hole blasting in tunnel, in Proceedings of the 19th International Symposium on Mine planning and equipment selection (MPES) conference, Dec 1-3 2010, Fremantle, WA, Australia: Carlton South, Vic.: AusIMM.
Source Conference
Mine planning and equipment selection (MPES) conference
Faculty
Faculty of Science and Engineering
School
WASM: Minerals, Energy and Chemical Engineering
Collection
Abstract
The success of smooth blasting essentially depends on geological condition of rock. Also, in the perimeter hole, borehole pressures with light, well-distributed explosive loads are important to minimise overbreak. In order to simulate perimeter holes with scaled model test, the borehole pressure was considered as a factor of scale. Hydraulic oil pressure is applied as borehole pressure instead of using explosives and detonators in order to remove the undesirable effects of detonators in an experimental set-up of just two perimeter holes in a tunnel blast. The borehole pressure on a perimeter hole is nearly reproduced with hydraulic pressure which is generated by non-electric detonators in the hermetical cylinder.