METHOD OF WELL HYDRAULIC EXTRACTION OF NATURAL RESOURCES Russian patent published in 1994 - IPC

FIELD: well hydraulic extraction of minerals. SUBSTANCE: productive seam of minerals is opened by well and extracting aggregate is placed in it. Rock mass is extracted by layers in direction from top to bottom with hydraulic mixture being fed up to ground surface and extracting chamber formation. Vertically movable partition, for example, feeling extracted layer by plastics, is formed in chamber. Rock mass under partition is extracted. Space of extracting chamber over partition is filled with hardening stuff. In process of operation partition is periodically lowered. Width of partition is made smaller than width of chamber and its density is less than density of water. Water between walls of chamber and partition temporally is frozen. Upper surface of partition is made in the form of roof of filling stuff natural equilibrium. EFFECT: method is used in well hydraulic extraction of minerals and hydraulic test of big productive beds in areas of unstable rocks. 6 cl, 5 dwg