The intensification of geotechnological processes by means of impulse hydrofracture in many areas of the mining industry requires engineering estimates of the parameters of the cracks formed (length, opening, number, orientation), especially if the technology employed requires deliberate fracturing of a solid mass with cracks with definite sizes and configurations. The scheme most widely used for impulsive hydrofracturing consists of the generation of an impulsive pressure in some part of a liquid-filled well. If this pressure is sufficiently high, the circumwell region of the rock mass is fractured with the formation of vertical cracks and radially configured ring-shaped cracks. Since the energy in the pulse and the mass of liquid in the fracture zone are limited, the cracks propagate over a finite distance and have a finite opening, determining the new hydrodynamic properties of the rock mass. In spite of the fact that there exist a substantial arsenal of special geophysical apparatus enabling such work, virtually no attention has been devoted to the mechanics of impulsive hydrofracturing. At the same time, the general characteristics of the fracturing of the rock mass in such loading regimes must be determined in order to predict the effectiveness of impulsive hydrofracturing and to select the optimal conditions. This goal was pursued in the experiments described below.
This is a preview of subscription content, log in to check access.
Buy single article
Instant access to the full article PDF.
Price includes VAT for USA
A. A. Vovk, B. V. Zamyshlyaev, L. S. Evterev, et al., Behavior of Solids under Impulsive Loads [in Russian], Naukova Dumka, Kiev (1984).
F. I. Kucheryavyi, Yu. I. Voitenko, and A. V. Mikhalyuk, “Control of the character of the damage in hydrofracture of rocks,” Izv. Vyssh. Uchebn. Zaved., Gorn. Zh., No. 9 (1983).
V. M. Finkel', Physics of Fracture [in Russian], Metallurgiya, Moscow (1970).
L. I. Sedov, Mechanics of Continuous Media [in Russian], Nauka, Moscow (1970), Vol. 2.
F. I. Kucheryavyi, A. V. Mikhalyuk, and Yu. I. Voitenko, “Control of the pressure threshold in hydrofracture of rock,” Izv. Vyssh. Uchebn. Zaved., Gorn. Zh., No. 4 (1983).
N. M. Bezukhov, Foundations of the Theory of Elasticity, Plasticity, and Creep [in Russian], Vyssh. Shkola, Moscow (1968).
Translated from Zhurnal Prikladnoi Mekhaniki i Tekhnicheskoi Fiziki, No. 5, pp. 135–141, September–October, 1986.
About this article
Cite this article
Vovk, A.A., Voitenko, Y.I. & Mikhalyuk, A.V. Impulsive hydrofracture of polymethyl methacrylate. J Appl Mech Tech Phys 27, 758–764 (1986). https://doi.org/10.1007/BF00916153
- Optimal Condition
- Rock Mass
- General Characteristic
- Polymethyl Methacrylate