PROCESS OF DESTRUCTION OF ROCKS WITH DRIVING OF WORKING IN THEM Russian patent published in 1994 - IPC

Abstract RU 2006581 C1

FIELD: mining industry. SUBSTANCE: this process is employed when driving working of any purpose, shape or cross-section. It includes formation of cut space by any known method, collaring auxiliary and outer blast-holes distances between which are strictly defined, collaring of contour blast-holes distances between which are assumed equal r_р (not exceeding this value) and their successive breaking to isolate design contour of driven working. EFFECT: enhanced efficiency of driving workings. 1 dwg

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RU 2 006 581 C1

Authors

Andrievskij Aleksandr Porfirovich

Dates

1994-01-30—Published

1992-02-07—Filed