LUBRICANT INJECTION METHOD IN PIPE JACKING METHOD,申请号JP20020276983-传众专利搜索

LUBRICANT INJECTION METHOD IN PIPE JACKING METHOD

申请公布号：JP2004116026(A)

申请号：JP20020276983

申请日期：2002.09.24

申请公布日期：2004.04.15

申请人：

HITACHI SUISHIN KOGYO KK

发明人：KATSUMURA JUNICHI

分类号：E21D9/06;(IPC1-7):E21D9/06

主分类号：E21D9/06

摘要：PROBLEM TO BE SOLVED: To enable a long propulsion with a low source pressure by obtaining a lubricant material causing no deterioration for a long time by filling the sufficient lubricant material having an even density in the periphery of the propulsion pipe through a plain constitution device. SOLUTION: During excavating operation, a lubricant material is discharged (discharge cycle) at every 20 second from the front nozzle 2 to the tail nozzle 2 in order installed at the peripheral side of the injection pipe 1 following an excavator 9. The lubricant material is injected into a void 11 resulting from a difference between the outer diameters of the excavator 9 and the outer diameter of the succeeding injection pipe 1 and a plurality of jacking pipes 6. The lubricant material of delivery cycle by a nozzle 2 is repeated a plurality of times during propulsion through the distance from the head nozzle 2 to the tail nozzle 2 until it arrives at the arrival shaft. COPYRIGHT: (C)2004,JPO