FORMATION MINING METHOD OF KIMBERLITE PIPE WITH STOWING Russian patent published in 2012 - IPC E21C41/22 

FIELD: mining.

SUBSTANCE: formation mining method of kimberlite pipe involves mining of ventilation, bottom and sectional gangways, ventilation and filling raises, ore chute, formation mining and stowing operations. At that, each formation is divided in horizontal plane into several sections with equal equivalent roof passage. Sections are mined and stowed subsequently using pneumocylinder support installed in staggered order. Before the stowing material is supplied to the worked-out section of the bed, pneumocylinder support is shifted to one row along the boundary of the next worked-out bed section. Support is isolated from the worked-out section of the bed with installation of the required stowing connection straps. Stowing material is supplied to the worked-out section till complete filling; after that, the next section is worked out using pneumocylinder support in the above sequence.

EFFECT: reducing labour intensity of the operations of the method and increasing the resources development speed.

3 dwg