SUSPENSION WELL STEMMING Russian patent published in 2011 - IPC F42D1/20 

FIELD: mining.

SUBSTANCE: suspension well stemming is made in the form of cylinder the diametre of which is comparable with diametre of well. Cylinder is solid and installed in the well to the depth of massif with intensive jointing. Upper end of cylinder is pointed and attached by means of rope to the crossbar located above the well mouth. The space of the well from upper pointed cylinder end to day surface is filled with drill fines.

EFFECT: invention allows increasing crushing process efficiency of rocks and decreasing its prime cost, reducing specific consumption of explosives, improving rock crushing quality, simplifying the design and improving its reliability.

1 dwg