Maqolada turli balandlikdagi pog'onaning va s h ’ajinali zarvadlar zabykalari tuzilishini hisobga oluvchi, koeffitsi entiling solishtirma sarjiga bog'liq bo'lgan kon massivi zonasi mustahkamligi zaiflashishishi o'lchamining о 'zgarish darajasi qonuniyatlari keltirilgan.
Tayanch iboralar: muhandislik xisob-kitob metodikasi, burg 'ulab portlatishning samaradorlik parametrlari, tog ’ massasining qattiqligi kamavish mavdoni, ommaviy portlatish, portlovchi moddaning solishtirma sarfi, zabovka konstruksivasi, s h ’ajinali zarvad, portlovchi modda, pog 'ona balandligi, massivning fizik-maxanik va kon-texnologik paramertlari.
The article provides power-law patterns o f size change o f the zones o f the strength weakening o f the rock massif depending on the specific charge ratio, taking into account the stemming structure o f downhole explosive charges in different cutting depth.
Key words: methods o f engineering calculation, effective parameters o f drilling and blasting operations, zone o f the strength weakening o f the rock massif, mass explosion, specific consumption o f explosives, stemming structure, downhole charge, explosives, cutting depth, physical and mechanical and mining and processing parameters o f massif.