Коn jinsiari masstvini porlatishda zichlik me'yori, yoriqlilik va Puasson koeffitsientiga bogiik bo'lgan karyerda oldindan tirqish hosil ho'lganda bir nechta sferik PM zaryadlaridan ibora  bo'lgan elemental skvajinali zaryadlarning massasi, hamda skvajina chuqurligi, zaboyka uzunligi va konturli zaryadlar orasidagi masofa aniqlangan. Ular asosida zamonaviy kompyuterlardan foydalnib burg'ulab portiatish ishlarining effektiv parametrlarini aniqlash kisobi dasturi ishlab chiqilgan bo’lib, ilmiy yangilik O'zbekiston Respublikasi patenti bilan himoyalangan.

Tayanch iboralar: skvajinali zaryadning massasi, tirqish paydo bo'lishi, yoriqlilik, zichlik me'yori, konturli zаryad, qazilgan  kort uzimligi, samarali parametrlar, massaning o’zgarishi.

The masses is determined o f the elementary blasthole charge consisting o f several spherical charges o f explosives at a preliminary’ presplitting on career depending on coefficients considering strength, jointing and Poisson blast o ff the solid of the rocks, and also depths o f wells, lengths o f stemming and distance between planimetric charges is determined On the basis o f which their program o f calcularion o f determination o f effective parameters o f drilling-and-blasting works withuse o f modem computers which scientific novelty is protected by the patent o f the Republic o f Uzbekistan is developed.

Key words: mass o f blasthole charge, presplitting, jointing, strength, planimetric charge, lengths o f stemming, effective parameters, mass variation.