METHOD FOR EXTRACTING SALTS FROM SALT DEPOSITS Russian patent published in 2004 - IPC

FIELD: mining industry.

SUBSTANCE: method includes drilling of two or more wells, casing of these, equipping with operation pipes, feeding of dissolvent and non-dissolvent into deposit, draining brine, forming of preparatory mines, washout of chamber. During drilling of wells components of forces in deposit are measured. Washout of chamber is performed above ceiling placed at depth, where all components of forces are equal. Relation of distance between axes of dissolving chambers and chambers diameters are determined from B/D<5, where B - distance between axes of dissolving chambers, in meters, D - diameter of chambers of dissolving, in meters. Loss of non-dissolvent is supported proportional to change of chamber volume. On mouth armature of wells counter-pressure is created for controlling speed of changing of chambers volumes.

EFFECT: higher salt yield during operational extraction of dissolving chambers resources, as well as constant decrease of dissolving chambers volume.

1 dwg, 1 tbl