Abstract
Features of combined method of hole forming with particular compaction and excavation of soil are considered. Scheme with continuous cycle of drifting and transportation of soil core-sample at pipe line by flow of worked air is proposed. The possibility of using pneumohummer with elastic valve in system of air distribution as drive for soil drifter is studied. Behavior of change of its energetic indicators when there is backpressure at exhaust chamber is clarified.
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