Abstract
The problem of an explosion is considered on the basis of a model of a viscoplastic medium. It follows from the solution that the theoretical dependence of the cavity radius on the time coincides satisfactorily with the experimental data. The introduction of viscosity into the scheme of the motion leads to the appearance of the scaling effect. From an analysis of the stress field, a conclusion follows concerning the existence, even in the initial stage of motion, of intense tangential tensile stresses, which lead to the formation of a system of radial fissures, observed in the experiment.
Similar content being viewed by others
Literature cited
A. Yu. Ishlinskii, I. V. Zvolinskii, and I. Z. Stepanenko, “The dynamics of ground masses,” Dokl. Akad. Nauk SSSR,95, No. 4 (1954).
A. S. Kompaneets, “Shock waves in a plastic packing medium,” Dokl. Akad. Nauk SSSR,109, No. 1 (1956).
É. I. Andrianskii and V. P. Koryavov, “The shock wave in a variable-packing plastic medium,” Dokl. Akad. Nauk SSSR,128, No. 2 (1959).
E. I. Shemyakin, “Expansion of a gas cavity in an incompressible elastic-plastic medium,” Prikl. Mekh. Tekh. Fiz., No. 5 (1961).
S. S. Grigoryan, “The solution of the problem of an underground explosion in soft soils,” Prikl. Matem. Mekh.,28, No. 6 (1964).
L. V. Al'tshuler, A. V. Balabanov, V. A. Batalov, V. A. Rodionov, and D. M. Tarasov, “Radiographic investigation of the initial stage of development of a camouflet cavity in sandy soil,” Fiz. Goreniya i Vzryva,6, No. 3 (1970).
G. I. Chernyi and A. V. Mikhalyuk, “Development of radial fissures as a result of explosions in compressible rocks,” Fiz.-Tekh. Probl. Razr. Polezn. Iskop., No. 3 (1969).
G. M. Lyakhov, “Determination of the viscous properties of soil,” Prikl. Matem. Mekh., No. 4 (1968).
G. M. Lyakhov and Ya. N. Pachepskii, “Computation of the viscous and plastic properties in the solution of wave problems,” Prikl. Matem. Mekh., No. 2 (1973).
L. M. Kachanov, Principles of the Theory of Plasticity [in Russian], Nauka, Moscow (1969).
S. S. Grigoryan, “Investigation into soil mechanics,” Doctoral Dissertation, Moscow State University, Moscow (1965).
V. A. Krivtsov and L. A. Semenova, “Approximate determination of the development of the cavity as the result of the fully contained explosion of a spherical charge in the ground,” Prikl. Mekh., Akad. Nauk UkrSSR,3, No. 9 (1967).
O. S. Kolkov, A. M. Tikhomirov, and A. F. Shalukevich, “Development of a cauldron cavity by an explosion in sandy ground, Fiz. Goreniya i Vzryva,3, No. 4 (1967).
Author information
Authors and Affiliations
Additional information
Translated from Zhurnal Prikladnoi Mekhaniki i Tekhnicheskoi Fiziki, No. 2, pp. 87–93, March–April, 1975.
The author thanks E. N. Shera for useful comments, and É. B. Polyaka and M. A. Shabat for assistance in carrying out the computer calculations.
Rights and permissions
About this article
Cite this article
Koshelev, É.A. Development of a camouflet cavity as a result of an explosion in soft ground. J Appl Mech Tech Phys 16, 223–228 (1975). https://doi.org/10.1007/BF00858917
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00858917