An innovative scaled model to simulate the perimeter hole blasting in tunnel
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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.
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Tehrani, S.; Sinaki, A.; Sarmadivaleh, Mohammad; Golmohammadi, V. (2016)Copyright 2016, Society of Petroleum Engineers.It is well-known that the risk of sanding varies for different completion systems, i.e. open hole versus cased and perforation, in a given wellbore and reservoir. Part of ...
Experimental and numerical investigation of the effect of inner and outer boundary dimensions on collapse of the sample in thick-walled cylinder testTehrani, S.; Joodi, B.; Nourifard, N.; Sarmadivaleh, Mohammad; Younessi, A. (2017)© 2017 ARMA, American Rock Mechanics Association. It is well-known that the risk of sanding varies for different completion systems, i.e. open hole versus cased and perforation, in a given wellbore and reservoir. Part of ...
Younessi Sinaki, Ahmad Reza (2012)Sand production in weakly consolidated sandstone reservoirs could result in damaging the production and surface facilities. Sanding includes two stages: the failure of sandstone around the borehole and sand grains being ...