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Information × Registration Number 0399U002790, 0199U001204 , R & D reports Title To develop the ultrasonic device for detection of cavitces and vacuum under buildings, facilities and bases in a zone of depression and подтопления of a surface at liquidation of mines popup.stage_title Розробити схему електричну принципову пульта контролю приладу Head Korzh E.M., Registration Date 03-06-2000 Organization Research Institute of Organization and Mechanization of Mine Construction popup.description2 Methods and means of measurement by ultrasonic devices. Buildings and facilities, which are on territory with the developed layers, оседают, thus the settlings have irregular character, that calls destruction of the bases and foundation of buildings. By modern methods the state information of rocks under facilities cannot be obtained, creation of the ultrasonic device which is capable to reveal availability of cavitces and vacuum under buildings, facilities and foundation and their spatial orientation therefore is necessary. Analytical and laboratory researches. Pursuant to the calendar plan the scheme of the electrical basic console of the control of the device is developed. In a structure console of the control (CC) enters the unit of the ultrasonic generator serving for excitation and strengthening on power of a ultrasonic signal and the monitor unit, ensuring a reliable and stable reception, processing and echoing of a signal from hole of a shell of the radiator. The outcomes activity on a stage w ill be used at development of an experimental sample of the ultrasonic device. Ministry Coal Industry of Ukraine, renovation of mines and their infrastructure Product Description popup.authors popup.nrat_date 2020-04-03 Close