| Abstract: | Nonstationary gas filtration from the cavity of a camouflaged underground explosion through a disaggregated porous medium is calculated. The computations were carried out for a spherically symmetric gas experiencing two-dimensional motion. A two-term law of filtration was used. The space-time pressure distribution of the gas within the medium was obtained. Motion hodographs of the  front of filtration and the interface between the explosion products and air were constructed. The influence of the soil filtration characteristics and pressure in the cavity was investigated. The time at which gas is discharged into the atmosphere is determined based on well-known data on the permeability of certain types of rocks that have undergone the effects of an explosion. The variation of gas flow with time as a function of explosion depth is established.Translated from Zhurnal Prikladnoi Mekhaniki i Tekhnicheskoi Fiziki, No. 1, pp. 111–120, January–February, 1976. |
