Scheklinski-Glück, G.G.Scheklinski-GlückMehlin, H.-P.H.-P.Mehlin2022-03-032022-03-031990https://publica.fraunhofer.de/handle/publica/178457The objective of this report is to present a system of approximation formulae which may be used to calculate pressure-time histories inside underground tunnel and chamber system in case of conventional weapon detonation at the entrance. It is necessary to know a blastwave propagates through tunnels and rooms inside a structure in order to define the loading on blast closures or ventilation systems of an underground shelter.enapproximation formulablastwaveBlastwellechamberExpansionskammerLuftstoßNäherungsformelStollentunnel620book article