DEVICE FOR SPLITTING OF BLOCK STONES Russian patent published in 2010 - IPC E21C37/14 

FIELD: mining engineering.

SUBSTANCE: device for splitting of block stones contains blasting chamber with partition with axial opening, installed before waste-gas flue, gas generating charge, located in chamber's cavity, gate, shaft, installed in blast hole intercommunicated to blasting chamber. Reach-through holes are implemented in walls of shaft with installed in it rests, implemented with ability of radial motion at its interaction to wedging component, located in channel of shaft with ability of lengthwise movement. Wedging component is implemented in the form of piston and in walls of shaft lengthwise its generatrix before rests there are implemented not less than two diametrically located through-hole.

EFFECT: invention provides reliable performance of device by means of its keeping in well, increasing of operation safety with declared device.