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Principles of the turbo-explosion of explosive charges part 2: Calculation of the thermal effect of detonation

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Conclusions

Coefficients that characterize the relative compression of the substance in the CJ plane and on the shock front of the detonation wave are found by means of Eqs. (8).

For a specific explosive, the state of the substance on the shock front of the detonation wave depends on the initial density (specific volume) of the charge of explosive and obeys adiabatic law (27) with adiabatic exponent (26).

Accordingly, the differences between individual explosives of the CaHbOcNd type with respect to detonation velocity (36), mass velocity (38) and (39), and pressure (40) and (41) in the CJ plane and on the shock front of the detonation wave are determined mainly by the density of the single crystal of the corresponding explosive and its detonative heat of explosion.

For individual explosives of the given type, detonative heat of explosion reaches its maximum at the maximum density of the charge (the maximum density of the single crystal). The corresponding values for ten explosives are shown in Table 1. A decrease in charge density is accompanied by a decrease in heat of explosion in accordance with law (37) and an increase in the importance of the thermal effect of the deflagration reactions, which are highly sensitive to the blasting conditions.

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Mining Institute, Siberian Branch of the Russian Academy of Sciences. Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 3, pp. 52–65, May–June, 1998.

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Muchnik, S.V. Principles of the turbo-explosion of explosive charges part 2: Calculation of the thermal effect of detonation. J Min Sci 34, 230–241 (1998). https://doi.org/10.1007/BF02803460

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