The type of propulsion conductor device that suppresses the inflow of soil used in the pipe propulsion method

The present invention relates to a soil inflow suppression type propulsion lead device used in a propulsion pipe propulsion method, and more particularly to the soil inflow suppression type propulsion lead device used in a propulsion pipe propulsion method that prevents the pulsation caused by the inflow of soil when excavating the ground, thereby suppressing the breakage of a screw casing and enabling efficient earth pressure maintenance and soiling. In particular, a cutter bit is specially processed to ensure high corrosion resistance, high hardness, wear resistance and high strength to achieve long life. The soil inflow suppression type propulsion lead device used in a propulsion pipe propulsion method includes a lead body, a thruster, and a propulsion pipe. 본 발명은 추진관 추진공법에 사용되는 토사 유입 억제형 추진 선도체장치에 관한 것으로, 보다 상세하게는 추진관 추진공법으로 지반을 굴진할 때 유입되는 토사가 배토되면서 생기는 맥동현상을 막아 스크류케이싱의 파단을 억제하고 효율적인 토압 유지 및 배토가 가능하도록 하면서 특히, 커터비트를 특수가공하여 고내식성, 고경도, 내마모, 고강도를 확보하여 장수명화를 달성할 수 있도록 개선된 추진관 추진공법에 사용되는 토사 유입 억제형 추진 선도체장치에 관한 것이다.