METHOD OF CYCLIC SINKING OF VERTICAL MINE SHAFTS AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2015 - IPC E21D1/06 

FIELD: mining operations.

SUBSTANCE: method comprises hole-drilling of rock mass using a core barrel, installation of permanent support. And the drive of the drill is placed on the sinking platform. The rock inside the body of the drill in each stope before lifting is destroyed by drilling and blasting method, for which the drill body is detached from the drillstring, which is removed to a safe distance. After airing the bottomhole space the blasted rock is loaded, using the clampshell-type or bucket loader, connected to the sinking platform and pushing apart in the bearing elements of the permanent support of the barrel, into a hoist bucket and it is removed to the surface. After that, by means of pivotally mounted cantilevered rods the drill is connected to the drillstring. The device in which the drill is made with the ability to disconnect its housing from the drillstring, for which its end part is provided with the pivotally mounted cantilevered rods. The end part of the rod is formed with a locking shank which engages with the fixing socket, rigidly secured to the drill body. The cantilevered rods of the drillstring are connected to it by hoist hydraulic cylinders.

EFFECT: increase in the rate of sinking of the shaft while maintaining the strength characteristics of the marginal mass.

7 cl, 4 dwg