HIGH PRESSURE WATER INJECTOR AND PRESSURE HOSE RECOVERING METHOD IN HIGH PRESSURE WATER INJECTOR

摘要

PROBLEM TO BE SOLVED: To provide a high pressure water injector and a pressure hose recovering method desirable from the viewpoint of an environment and construction cost without leaving industrial waste in the soil in a construction method for driving a pile in the ground by simultaneously using high pressure water.;SOLUTION: This construction method drives the pile in the ground by simultaneously using the high pressure water by fixing high pressure water injection nozzles to the driving pile. The high pressure water injector is provided as a basic means by connecting a pressure water hose 4 for supplying the high pressure water and a pipe 3 attached with the high pressure water injection nozzles 2 and 2 by using a connecting pipe 6 having the slipping-out preventive function by a shear pin 10. An upper end vicinal part of the connecting pipe 6 is threadedly engaged and fixed inside the pressure water hose 4 by a threadably attaching part 7. A step part 9 having a horizontal directional plane part is formed in an almost intermediate part of the connecting pipe 6. The shear pin 10 is inserted so that an inside tip part contacts with an upper surface of the step part 9 by penetrating through a pipe wall from the outside of the pipe 3.;COPYRIGHT: (C)2004,JPO