Determination of the dependence of technological parameters and intensification of the rock salt mining process

Abstract

The target objectives of the development of underground salt dissolution technology were and still are to increase the productivity of wells and the completeness of extraction of the deposits' reserves. The complexity of the problems of managing the process of underground salt dissolution through the wells is unique for man-made objects volumes filled with liquid. To intensify the process of solvent saturation, taking into account the above difficulties and peculiarities, the following method is proposed. Underground salt dissolution chamber is eroded by means of buried water supply. Preliminarily on the surface the solvent is saturated with carbon dioxide in the mass ratio of carbon dioxide to solvent from 0.02:1 to 0.16:1. Non-solvent is mixed with carbon dioxide absorbent in the mass ratio of absorbent to carbon dioxide from 1.1:1 to 1.5:1 and periodically fed into the chamber. Preliminary calculation of the technological schemes of salt dissolution through wells developed by the author showed that this method allows increasing the productivity of underground dissolution chambers by 10-20 %, which indicates the prospects for further development of the proposed technologies.