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Information × Registration Number 0304U001780, 0103U004821 , R & D reports Title Detection of geological infringements in coal layers a method of acoustic sounding for conditions of Separated division "Mine Dobropolskaja" of State enterprise "Dobropolieugol". popup.stage_title Встановлення геологічних порушень у вугільних пластах методом акустичного зондування для умов Відокремленого підрозділу «Шахта Добропільська» ДП «Добропіллявугілля». Head Alexander Shashenko, Registration Date 01-04-2004 Organization National Mining University popup.description2 During researches, which one were conducted in conditions of the Isolated subdivision «Mine «Dobropolskaya» of State firm «Dobropolieugol», the principled feasibility of an acoustic method of verification of a condition of a mining massif for the forecast of geologic violations at the front of working face of development was affirmed. The method is based on the analysis of amplitude- frequency characteristics artificially of exited acoustic oscillations distributing in a massif. The instrumentation АК-1 utilised as base.5635 Product Description popup.authors popup.nrat_date 2020-04-02 Close