Effect of Existence of Stone Wall on Reduction of Blast Effect of Gbu Penetrator Bombs

Abstract

One of the targets in airstrikes is underground structures such as tunnels. Tunnels are utilized as subway tunnels, water transmission and utility tunnels. Water transmission tunnels and utility tunnels usually have low burial depth. Therefore, these structures are more exposed to damage of terrorist attacks and airstrikes. In this study, the effect of constructing a stone wall and a reinforced concrete wall on reduction of blast effect on tunnel cover is compared using a 2D finite difference program. The considered characteristics for the soil around the tunnel is according to results of carried out compressive strength tests of alluvial soil of Tehran. Finally, effects of location and width of stone wall on blast pressure reduction on tunnel cover is investigated, as a parametric study.