Change in Permeability of Loose Rocks in Partial Impregnation with High-Elastic Polymer
T. V. Shilova1, I. M. Serdyuk1,2, S. V. Serdyukov1, O. A. Ivanova2, A. S. Serdyukov1
1Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
2Novosibirsk State University, Novosibirsk, Russia
Keywords: Permeability, two-component highly elastic resin, loose rock, structure, single-solution and double-solution impregnation, electron scanning microscopy, permeation test
Abstract
The article describes the laboratory testing of permeability and structure of loose rock hardened with two-component highly elastic polyurethane resin at different methods of impregnation and at different consumptions of the polymer. Two methods of impregnation are tested: with a single solution as a mixture of two resin components and with a double solution of separate components mixed inside the test rock. It is shown that the decrease in the volume of resin from 20-40 to 5-10 vol% results in abundance of inter-grain voids and through permeable pore channels, and in an increase in the rock permeability by two-three orders of magnitude. The single-solution impregnation with the ready mixture ensures lower permeability of the test samples.
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