SUSPENDED WELL STEM Russian patent published in 2019 - IPC F42D1/08 F42D1/18 

FIELD: mining.

SUBSTANCE: invention relates to mining, namely to the field of drilling and blasting operations, and is intended for the explosion products locking in the wells charging cavity. Invention can be used in industries that use blasting operations in rock massifs, in particular, in open mining of minerals. Suspension well stem includes supporting structure exceeding diameter of well head, and suspended part on flexible connection. Suspended part is made of rubber-containing material, which in deformed and connected by additional flexible link is placed in bag made of plastic material. Transverse size of the bag is greater than the diameter of the well; the upper edge of the bag is knotted with a rope with the possibility of its free movement along the flexible connection. Width of suspended part ranges from 0.5 to 0.75 of well diameter.

EFFECT: invention makes it possible to increase efficiency of well stemming.

1 cl, 4 dwg