SUSPENDED WELL STEM Russian patent published in 2021 - IPC F42D1/08 F42D1/18 

FIELD: mining.

SUBSTANCE: invention relates to mining, in particular to the field of drilling and blasting operations in rocks, and can be used in various industries, using blasting operations in rock massifs, in particular, when mining minerals by open method. Suspension well stem is made in the form of a cylinder attached by a constant flexible link to a crossbeam located above the well mouth. Upper end face of cylinder is skewed, and diameter is comparable to diameter of well. Cylinder is composite and consists of flexible resilient plates, length, width and height of which are proportionate and connected by constant flexible link at lower end.

EFFECT: design of suspended stemming makes it possible to increase efficiency of locking expanding gaseous products of detonation in charging cavity of the well, to improve quality of rock mass crushing.

1 cl, 3 dwg