Ushbu keltirilgan ishda kon massivining yumshatish maydonidagi burg׳ulash ishlarining effektiv parametrlarianiqlanib, ular qatordagi skvajinalarning orasidagi masofani va skvajinalar qatorlari orasidagi masofani 10-15 % gaoshirishga imkon beradi.Tayanch iboralar: portlatish ishlari, portlash yordamida kon massivini yumshatish, usul, portlatish ishlariningparametrlari, tajriba, yumshatish maydoni o׳lchamlari, sanoat sinovlari, burg׳ulash-portlatish ishlari o׳lchamlari,yoriqlar maydoni, skvajinalar orasidagi masofa, texnologik parametrlar, skvajinali zaryad, pog׳ona balandligi, skvajinachuqurligi, zaboyka konstruksiyasi, kon-geologik sharoitlar, qatorlar orasidagi masofa, portlatiladigan skvajinazaryadlarining soni.The article is showed the effective parameters of drilling-and-blasting works production in a zone of massif’sweakening that allowing to increase by 10-15% distance between holes in a row and distance between rows of theholes.Key words: explosive works, weakening of a massif as explosion, way, parameters of explosive works, experiment,the sizes of zones of easing, industrial tests, parameters of drilling-and-blasting works, cracking of an array,distance between wells, technological parameters, borehole charges, ledge height, depth of wells, a stemming design,mining-and-geological conditions, distance between ranks, quantity of the blown-up borehole charges.