METHOD FOR HYDRAULIC MINING OF MINERALS Russian patent published in 1996 - IPC

FIELD: mining. SUBSTANCE: method for hydraulic mining of minerals includes opening of ore body by cased wells: central cased well running through center of stoping room, and peripheral wells located over room contour, and system of underground mine workings; division of ore body into parts; formation of receiving room in each part base; supply of working agent through one wells; disintegration of mineral and transportation of pulp through the other wells. In recovery of minerals from diamond pipes, stoping rooms are limited by the contour of diamond pipes. Diamond pipe is divided into parts to form levels. In the upper level, protecting pillar is left and reinforced. In upper part of each level, technological room is made, and in receiving room, artificial bottom plate is made. Mineral is disintegrated by stages in stooping rooms with formation of sector-like face inclined towards periphery wells. Mineral is disintegrated by pulp flow under closed conditions by airlifting of pulp from receiving room through central well, and its discharge in technological room onto face of stoping room. Protecting pillar is reinforced by sinking radial inclined cased wells. Cased well heads are rigidly connected with casing of central well. Lower ends of strings are clamped in enclosing rocks at level of roof of upper level. Artificial bottom plate of receiving room is constructed with the aid of metal structures radially inclined towards the central well. Metal structures are yielding relative to enclosing rocks. Lower ends of metal structures are rigidly connected with casing string of central well. Central well is sunk with a diameter exceeding that of peripheral wells. Disintegration of mineral in adjacent stoping room is effected after filling the worked-out room. EFFECT: higher efficiency. 4 cl, 6 dwg