METHOD FOR DEVELOPMENT OF COMPLEX-STRUCTURED DEEP-LYING DEPOSITS Russian patent published in 2022 - IPC E21C41/28 

FIELD: mining industry.

SUBSTANCE: invention relates to the mining industry and can be used to develop complex-structured deep-lying deposits of gold. The method includes drilling wells, identification of rich zones of the productive reservoir, expansion of wells, local extraction of a rich zone element with an auger. The remaining part of the rich zone, beyond the boundary of drilling with the auger along the stretch of the productive reservoir, is extracted by a cylindrical bucket mounted on a drilling rod. After the cylindrical bucket is submerged to the level of the productive reservoir, the automatic system sends signals to control the hydraulic mechanisms for turning the expanders pivotally attached to the cylindrical bucket body, and to control the hydraulic cylinders for positioning the rotary cutting edges at the calculated cutting angle. The expanders are installed in the direction of rotation of the cylindrical bucket and open as the layer is cut, and the angle of rotation of the expanders corresponds to the thickness of the layer being cut. The mineral mass cut by the rotary cutting edges is directed by expanders into the inner cavity of a cylindrical bucket with a bottom. After filling, the cylindrical bucket rises through the well to control the mineral mass for gold content and feed it to gravity enrichment. The development cycles of the productive reservoir continue until the quality of the extracted mineral mass in the transition zone decreases to a set level. The zone of a productive reservoir with a low gold content is worked out by methods for physico-chemical geotechnology.

EFFECT: increase in the efficiency of gold extraction from deep-lying placers, increase in the productivity and reliability of excavation, reduction of the ecological burden on the environment in the mining area.

1 cl, 4 dwg