METHOD OF TRENCHLESS REPLACEMENT OF PIPE LINES AND DEVICE FOR REALIZATION OF THIS METHOD

摘要

FIELD: erection of pipe lines; replacement of underground pipe lines. SUBSTANCE: pull rope is passed through pipe line to be replaced and is connected with device for breaking this pipe line. New pipe line is connected to rear portion of device and is pulled as defective pipe line is broken. Additional pushing force is applied to rear end face of new pipe line; this force compensates for reactive force caused by breaking of pipe line, thus keeping joints of new pipe line intact. EFFECT: enhanced reliability. 11 cl, 5 dwg