DRILLING-AND-BLASTING JOBS Russian patent published in 2014 - IPC F42D3/04 E21C41/26 

FIELD: mining.

SUBSTANCE: invention relates to mining particularly to openworking of rocks. Zoning is adjusted by registration of changes in thrust and lift engine performances to tie the latter via bucket spatial position in digging cycle for registration of bench bottom quality, granulometric composition and shape of cut rock bulk at transition from near well space to gotten well space. Characteristics of bench bottom working are allowed for by changes in performances of thrust engine at the level of bench bottom. Rock granulometric composition is defined by changes in performances of lift engines at filling and retention of filled bucket. Bulk compactness is defined by changes in performances of lift engine at scooping height registration at transition from gotten near well space to gotten well space.

EFFECT: higher efficiency of zoning and quality of blasting.

4 dwg