FIELD: hole making equipment. SUBSTANCE: drive has hollow body, generator for producing of working agent, nozzle block with nozzle for ejection of working agent, vessel for working medium and perforated branch pipe. Nozzle block is arranged on rear end of drive body. Vessel is located in body inner space. Branch pipe is installed in vessel inner space. Generator inner space is communicated through branch pipe with vessel inner space. Vessel inner space is communicated with nozzle of nozzle block. EFFECT: higher efficiency. 8 cl, 3 dwg
