A Borehole Mining method comprising driving a borehole, into a production
zone under a low-degree angle .alpha. (0<.alpha.<35.degree.),
installation in said borehole a mining device with a hydromonitor and
eductor, water-jet cutting of rock, pumping-out a slurry, and creating a
cavity. Said tool is positioned such that the hydromonitor is oriented at
an angle .beta. to the horizontal plane. The projection on said plane of
the water-jet equals to the desired span of the driven cavity. The
borehole may be driven sinking or raising. The BHM tool is
inserted/removed from the borehole while mining without rotation,
extending said cavity along the borehole. Said borehole can be driven from
a land or water surface trough the mother-well drilled vertically and then
deviated. It also may be driven straight from an underground mine or open
pit floor. After a creation of said cavity, it may back-filled with a
waste or hardening material.
Μια μέθοδος μεταλλείας γεωτρήσεων που περιλαμβάνει οδηγώντας μια γεώτρηση, σε μια ζώνη παραγωγής κάτω από μια γωνία χαμηλός-βαθμού αλπχα. (0
