OPEN METHOD OF COMBINED DEVELOPMENT OF MINERAL DEPOSITS

摘要

Method combined open recess minerals and preferably trubko- columnar shape of small volumes comprising autopsy mineral drilling large diameter holes, the separation of minerals from the array, its flow into the annular space and issuing onto the surface, characterized in that the field is divided into a power horizontal layers excavation and drilling large diameter hole and the ore feed are in series, the well layer in the recessed regales tested with a depth of n helot-wells, then raised double drill string above the wellhead and at the bit position is set on a supporting heel bearing housing which coincides in shape with the shape of the borehole bottom, and then lowered on its face.