PRESSURE GROUT INJECTOR FOR DRIVING PILE

摘要

PURPOSE: A pressure grout injector for driving a pile is provided to drive a foundation pile having excellent load capacity by injecting pressurized grout into an excavation hole under a cast-in-place piling work and to make a cast-in-place piling work possible in an artesian area where grout flows backward by underground water. CONSTITUTION: The pressure grout injector(100) for driving a pile comprises a pressure tub(10) whose lower end is opened and an upper end is closed as a sectional shape of a cylinder to seal up the upper end of a steel pipe for a pile, an ending instrument(20) located on the lower end of the pressure tub(10) to make the pressure tub sealed under the upper end of the steel pipe for a pile, and an injection way(30) formed on the outer surface of the pressure tub(10) to be communicated to inject grout supplied under pressure compulsively.